feat: real dates and per-account detail in every statement export

Every statement export rendered life-of-ledger totals under whatever date
range or as-of label was asked for, and the P&L and balance sheet XLSX
were totals-only. Now:

- books.profit_and_loss / books.balance_sheet and the csv, json, xlsx,
  pdf exports and CPA package all use core's profit_and_loss_for_period
  and balance_sheet_as_of, with a line per account. The tools keep their
  totals and add revenue/expense/asset/liability/equity account lines.
  An omitted start is the first posted entry, never "0001-01-01".
- ledger-import::report lays a statement out once (section, line,
  subtotal, total) for every renderer, with one exact amount formatter:
  thousands separators, negatives in parentheses, no floats. XLSX keeps
  numeric cells with an accounting number format, named sheets, company
  header, totals with borders; the trial balance gains its totals row.
- ledger-mcp reads wanderbooks.toml (next to --data-dir, or
  --books-toml): company name for headers, fiscal_year_start for the CPA
  package's fiscal year to date (end derived; Feb 29 rejected), and
  [books] receipt_threshold, which the server had been ignoring.
  config.json's receipt_policy still wins when set. New dependency: toml
  1.x (already in the lockfile via another crate).
- Store::journal_seq(); every report notes the journal seq it reflects.

Tests: company.rs unit tests (fiscal years incl. a July start, scaffold
parsing, bad settings); report.rs formatting tests; an MCP stdio test with
--books-toml (threshold 5.00 enforced, February-only P&L with account
lines, start defaults to the first entry, as-of balance sheet).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MtYEaR6M6Ybdhm6X98BWNu

Cargo.lock

@@ -1182,6 +1182,7 @@ dependencies = [
  "serde_json",
  "thiserror",
  "tokio",
+ "toml",
  "tower",
  "zip 9.0.2",
 ]

crates/ledger-import/src/lib.rs

@@ -3,6 +3,7 @@
 //! - [`bank_csv`]: parse QBO bank/credit-card upload CSVs.
 //! - [`chart_csv`]: parse chart-of-accounts CSVs.
 //! - [`iif`]: generate IIF journal entries for QuickBooks Desktop.
+//! - [`report`]: the statement layout every renderer draws from.
 //! - [`xlsx`]: generate XLSX reports.
 //! - [`pdf`]: generate PDF financial statements (CPA handoff).
 //!
@@ -12,10 +13,12 @@ pub mod bank_csv;
 pub mod chart_csv;
 pub mod iif;
 pub mod pdf;
+pub mod report;
 pub mod xlsx;
 
 pub use bank_csv::{BankTransaction, parse_bank_csv};
 pub use chart_csv::{ChartRow, parse_chart_csv};
 pub use iif::{IifEntry, journal_to_iif};
-pub use pdf::{PdfError, balance_sheet_pdf, cash_flow_pdf, profit_and_loss_pdf};
+pub use pdf::{PdfError, statement_pdf};
+pub use report::{ReportMeta, Row, RowKind, Statement, format_amount};
 pub use xlsx::{XlsxReport, report_to_xlsx};

crates/ledger-import/src/pdf.rs

@@ -3,13 +3,11 @@
 //! Simple, correct, readable — not pretty. Uses printpdf (MIT) with built-in
 //! Helvetica. Amounts are exact decimals rendered as strings; no floats.
 
-use ledger_core::reports::CashFlowStatement;
-use ledger_core::{AccountType, Ledger};
+use crate::report::{ReportMeta, RowKind, Statement, format_amount};
 use printpdf::{
     BuiltinFont, Color, Mm, Op, PdfDocument, PdfFontHandle, PdfPage, PdfSaveOptions, Point, Pt,
     Rgb, TextItem,
 };
-use rust_decimal::Decimal;
 use thiserror::Error;
 
 /// PDF rendering errors.
@@ -20,11 +18,6 @@ pub enum PdfError {
     Save(String),
 }
 
-fn money(d: Decimal) -> String {
-    // Two decimals, no float anywhere.
-    format!("{:.2}", d)
-}
-
 fn text_ops(
     title: &str,
     subtitle: &str,
@@ -103,160 +96,28 @@ fn save_pdf(title: &str, ops: Vec<Op>) -> Result<Vec<u8>, PdfError> {
     Ok(bytes)
 }
 
-/// Render a profit-and-loss statement PDF: revenue and expense accounts with
-/// balances, then totals and net income.
-pub fn profit_and_loss_pdf(ledger: &Ledger, start: &str, end: &str) -> Result<Vec<u8>, PdfError> {
-    let mut revenue_rows: Vec<(String, String)> = Vec::new();
-    let mut expense_rows: Vec<(String, String)> = Vec::new();
-    let mut accounts: Vec<_> = ledger.chart().all().collect();
-    accounts.sort_by(|a, b| a.code.cmp(&b.code));
-    for account in accounts {
-        if account.placeholder {
-            continue;
-        }
-        let balance = ledger
-            .account_balance(account.id)
-            .map_err(|e| PdfError::Save(e.to_string()))?;
-        if balance.is_zero() {
-            continue;
-        }
-        let label = format!("{} {}", account.code, account.name);
-        match account.account_type {
-            AccountType::Revenue => revenue_rows.push((label, money(balance))),
-            AccountType::Expense => expense_rows.push((label, money(balance))),
-            _ => {}
+/// Render a laid-out statement (see [`crate::report`]) as a PDF.
+pub fn statement_pdf(st: &Statement, meta: &ReportMeta) -> Result<Vec<u8>, PdfError> {
+    let mut rows = Vec::new();
+    let mut totals = Vec::new();
+    for r in &st.rows {
+        let amount = r.amount.map(format_amount).unwrap_or_default();
+        match r.kind {
+            RowKind::Spacer => rows.push((String::new(), String::new())),
+            RowKind::Section => rows.push((r.label.to_uppercase(), String::new())),
+            RowKind::Line => rows.push((format!("  {}", r.label), amount)),
+            RowKind::Subtotal | RowKind::Total => rows.push((r.label.clone(), amount)),
         }
     }
-    let pl =
-        ledger_core::reports::profit_and_loss(ledger).map_err(|e| PdfError::Save(e.to_string()))?;
-
-    let mut rows = vec![("REVENUE".to_string(), "".to_string())];
-    rows.extend(revenue_rows);
-    rows.push(("".to_string(), "".to_string()));
-    rows.push(("EXPENSES".to_string(), "".to_string()));
-    rows.extend(expense_rows);
-
-    let totals = vec![
-        ("Total revenue".to_string(), money(pl.revenue)),
-        ("Total expenses".to_string(), money(pl.expenses)),
-        ("Net income".to_string(), money(pl.net_income())),
-    ];
-
+    totals.push((
+        format!("Prepared from journal through seq {}", meta.journal_seq),
+        String::new(),
+    ));
     let ops = text_ops(
-        "Profit and Loss",
-        &format!("{} to {}", start, end),
+        &format!("{} — {}", meta.company, st.title),
+        &st.period,
         &rows,
         &totals,
     );
-    save_pdf("Profit and Loss", ops)
-}
-
-/// Render a balance-sheet PDF: assets, liabilities, equity with balances,
-/// then totals proving the accounting equation.
-pub fn balance_sheet_pdf(ledger: &Ledger, as_of: &str) -> Result<Vec<u8>, PdfError> {
-    let mut asset_rows: Vec<(String, String)> = Vec::new();
-    let mut liab_rows: Vec<(String, String)> = Vec::new();
-    let mut equity_rows: Vec<(String, String)> = Vec::new();
-    let mut accounts: Vec<_> = ledger.chart().all().collect();
-    accounts.sort_by(|a, b| a.code.cmp(&b.code));
-    for account in accounts {
-        if account.placeholder {
-            continue;
-        }
-        let balance = ledger
-            .account_balance(account.id)
-            .map_err(|e| PdfError::Save(e.to_string()))?;
-        if balance.is_zero() {
-            continue;
-        }
-        let label = format!("{} {}", account.code, account.name);
-        match account.account_type {
-            AccountType::Asset => asset_rows.push((label, money(balance))),
-            AccountType::Liability => liab_rows.push((label, money(balance))),
-            AccountType::Equity => equity_rows.push((label, money(balance))),
-            _ => {}
-        }
-    }
-    let bs =
-        ledger_core::reports::balance_sheet(ledger).map_err(|e| PdfError::Save(e.to_string()))?;
-
-    let mut rows = vec![("ASSETS".to_string(), "".to_string())];
-    rows.extend(asset_rows);
-    rows.push(("".to_string(), "".to_string()));
-    rows.push(("LIABILITIES".to_string(), "".to_string()));
-    rows.extend(liab_rows);
-    rows.push(("".to_string(), "".to_string()));
-    rows.push(("EQUITY".to_string(), "".to_string()));
-    rows.extend(equity_rows);
-    rows.push((
-        "Current earnings (in equity)".to_string(),
-        money(bs.current_earnings),
-    ));
-
-    let totals = vec![
-        ("Total assets".to_string(), money(bs.assets)),
-        (
-            "Total liabilities + equity".to_string(),
-            money(bs.liabilities + bs.equity),
-        ),
-    ];
-
-    let ops = text_ops("Balance Sheet", &format!("As of {}", as_of), &rows, &totals);
-    save_pdf("Balance Sheet", ops)
-}
-
-/// Render a cash flow statement PDF (indirect method): operating (net
-/// income, depreciation add-back, working-capital changes), investing, and
-/// financing sections, then the net change reconciled to beginning and
-/// ending cash. Takes the computed statement, so the period and cash
-/// accounts are whatever the caller chose.
-pub fn cash_flow_pdf(cf: &CashFlowStatement) -> Result<Vec<u8>, PdfError> {
-    let line = |l: &ledger_core::reports::CashFlowLine| (format!("  {}", l.label), money(l.amount));
-    let mut rows = vec![("OPERATING ACTIVITIES".to_string(), "".to_string())];
-    rows.push(("  Net income".to_string(), money(cf.net_income)));
-    if !cf.depreciation.is_zero() {
-        rows.push((
-            "  Depreciation (non-cash)".to_string(),
-            money(cf.depreciation),
-        ));
-    }
-    rows.extend(cf.working_capital.iter().map(line));
-    rows.push((
-        "Net cash from operating activities".to_string(),
-        money(cf.cash_from_operations),
-    ));
-    rows.push(("".to_string(), "".to_string()));
-    rows.push(("INVESTING ACTIVITIES".to_string(), "".to_string()));
-    rows.extend(cf.investing.iter().map(line));
-    rows.push((
-        "Net cash from investing activities".to_string(),
-        money(cf.cash_from_investing),
-    ));
-    rows.push(("".to_string(), "".to_string()));
-    rows.push(("FINANCING ACTIVITIES".to_string(), "".to_string()));
-    rows.extend(cf.financing.iter().map(line));
-    rows.push((
-        "Net cash from financing activities".to_string(),
-        money(cf.cash_from_financing),
-    ));
-
-    let totals = vec![
-        (
-            "Net change in cash".to_string(),
-            money(cf.net_change_in_cash),
-        ),
-        (
-            "Cash at beginning of period".to_string(),
-            money(cf.cash_beginning),
-        ),
-        ("Cash at end of period".to_string(), money(cf.cash_ending)),
-    ];
-
-    let ops = text_ops(
-        "Statement of Cash Flows",
-        &format!("{} to {}", cf.start, cf.end),
-        &rows,
-        &totals,
-    );
-    save_pdf("Statement of Cash Flows", ops)
+    save_pdf(&st.title, ops)
 }

crates/ledger-import/src/report.rs

@@ -0,0 +1,287 @@
+//! The presentation model every statement renderer (XLSX, PDF) draws from.
+//!
+//! Core computes the statements; this module lays them out as rows —
+//! sections, account lines, subtotals, totals — once, so the formats can't
+//! drift apart. Amounts stay exact `Decimal`s here; [`format_amount`] is the
+//! one place they become text ("1,234.56", "(207.68)").
+
+use chrono::NaiveDate;
+use ledger_core::reports::{
+    BalanceSheetStatement, CashFlowLine, CashFlowStatement, ProfitAndLossStatement, StatementLine,
+};
+use rust_decimal::Decimal;
+use serde::Serialize;
+
+/// Who the report is for and exactly what it was prepared from.
+#[derive(Clone, Debug, Serialize)]
+pub struct ReportMeta {
+    /// Company name for the header, e.g. "Wanderland Labs LLC".
+    pub company: String,
+    /// Sequence number of the last journal line the report reflects.
+    pub journal_seq: u64,
+}
+
+/// What a row is, which decides how renderers style it.
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Serialize)]
+#[serde(rename_all = "snake_case")]
+pub enum RowKind {
+    /// A section heading ("Revenue"); no amount.
+    Section,
+    /// One account or one cash-flow line, indented under its section.
+    Line,
+    /// A section total ("Total revenue").
+    Subtotal,
+    /// A statement total ("Net income").
+    Total,
+    /// Vertical space between sections.
+    Spacer,
+}
+
+/// One row of a statement.
+#[derive(Clone, Debug, Serialize)]
+pub struct Row {
+    /// Row kind.
+    pub kind: RowKind,
+    /// Label text.
+    pub label: String,
+    /// Amount, when the row has one.
+    pub amount: Option<Decimal>,
+}
+
+/// A laid-out financial statement.
+#[derive(Clone, Debug, Serialize)]
+pub struct Statement {
+    /// "Profit and Loss", "Balance Sheet", "Statement of Cash Flows".
+    pub title: String,
+    /// "October 4 – October 11, 2026" or "As of October 11, 2026".
+    pub period: String,
+    /// The rows, top to bottom.
+    pub rows: Vec<Row>,
+}
+
+fn row(kind: RowKind, label: impl Into<String>, amount: Option<Decimal>) -> Row {
+    Row {
+        kind,
+        label: label.into(),
+        amount,
+    }
+}
+
+fn section(label: &str) -> Row {
+    row(RowKind::Section, label, None)
+}
+
+fn spacer() -> Row {
+    row(RowKind::Spacer, "", None)
+}
+
+fn account_lines(lines: &[StatementLine]) -> impl Iterator<Item = Row> + '_ {
+    lines.iter().map(|l| {
+        row(
+            RowKind::Line,
+            format!("{} {}", l.code, l.name),
+            Some(l.amount),
+        )
+    })
+}
+
+fn flow_lines(lines: &[CashFlowLine]) -> impl Iterator<Item = Row> + '_ {
+    lines
+        .iter()
+        .map(|l| row(RowKind::Line, l.label.clone(), Some(l.amount)))
+}
+
+/// Lay out a profit and loss statement.
+pub fn profit_and_loss(pl: &ProfitAndLossStatement) -> Statement {
+    let mut rows = vec![section("Revenue")];
+    rows.extend(account_lines(&pl.revenue));
+    rows.push(row(
+        RowKind::Subtotal,
+        "Total revenue",
+        Some(pl.total_revenue),
+    ));
+    rows.push(spacer());
+    rows.push(section("Expenses"));
+    rows.extend(account_lines(&pl.expenses));
+    rows.push(row(
+        RowKind::Subtotal,
+        "Total expenses",
+        Some(pl.total_expenses),
+    ));
+    rows.push(spacer());
+    rows.push(row(RowKind::Total, "Net income", Some(pl.net_income())));
+    Statement {
+        title: "Profit and Loss".to_string(),
+        period: period_label(pl.start, pl.end),
+        rows,
+    }
+}
+
+/// Lay out a balance sheet.
+pub fn balance_sheet(bs: &BalanceSheetStatement) -> Statement {
+    let mut rows = vec![section("Assets")];
+    rows.extend(account_lines(&bs.assets));
+    rows.push(row(
+        RowKind::Subtotal,
+        "Total assets",
+        Some(bs.total_assets),
+    ));
+    rows.push(spacer());
+    rows.push(section("Liabilities"));
+    rows.extend(account_lines(&bs.liabilities));
+    rows.push(row(
+        RowKind::Subtotal,
+        "Total liabilities",
+        Some(bs.total_liabilities),
+    ));
+    rows.push(spacer());
+    rows.push(section("Equity"));
+    rows.extend(account_lines(&bs.equity));
+    rows.push(row(
+        RowKind::Line,
+        "Current earnings",
+        Some(bs.current_earnings),
+    ));
+    rows.push(row(
+        RowKind::Subtotal,
+        "Total equity",
+        Some(bs.total_equity),
+    ));
+    rows.push(spacer());
+    rows.push(row(
+        RowKind::Total,
+        "Total liabilities and equity",
+        Some(bs.total_liabilities + bs.total_equity),
+    ));
+    Statement {
+        title: "Balance Sheet".to_string(),
+        period: format!("As of {}", long_date(bs.as_of)),
+        rows,
+    }
+}
+
+/// Lay out a cash flow statement (indirect method).
+pub fn cash_flow(cf: &CashFlowStatement) -> Statement {
+    let mut rows = vec![section("Operating activities")];
+    rows.push(row(RowKind::Line, "Net income", Some(cf.net_income)));
+    if !cf.depreciation.is_zero() {
+        rows.push(row(
+            RowKind::Line,
+            "Depreciation (non-cash)",
+            Some(cf.depreciation),
+        ));
+    }
+    rows.extend(flow_lines(&cf.working_capital));
+    rows.push(row(
+        RowKind::Subtotal,
+        "Net cash from operating activities",
+        Some(cf.cash_from_operations),
+    ));
+    rows.push(spacer());
+    rows.push(section("Investing activities"));
+    rows.extend(flow_lines(&cf.investing));
+    rows.push(row(
+        RowKind::Subtotal,
+        "Net cash from investing activities",
+        Some(cf.cash_from_investing),
+    ));
+    rows.push(spacer());
+    rows.push(section("Financing activities"));
+    rows.extend(flow_lines(&cf.financing));
+    rows.push(row(
+        RowKind::Subtotal,
+        "Net cash from financing activities",
+        Some(cf.cash_from_financing),
+    ));
+    rows.push(spacer());
+    rows.push(row(
+        RowKind::Total,
+        "Net change in cash",
+        Some(cf.net_change_in_cash),
+    ));
+    rows.push(row(
+        RowKind::Line,
+        "Cash at beginning of period",
+        Some(cf.cash_beginning),
+    ));
+    rows.push(row(
+        RowKind::Total,
+        "Cash at end of period",
+        Some(cf.cash_ending),
+    ));
+    Statement {
+        title: "Statement of Cash Flows".to_string(),
+        period: period_label(cf.start, cf.end),
+        rows,
+    }
+}
+
+/// "October 11, 2026".
+pub fn long_date(d: NaiveDate) -> String {
+    d.format("%B %-d, %Y").to_string()
+}
+
+/// "October 4 – October 11, 2026", or with both years when they differ.
+pub fn period_label(start: NaiveDate, end: NaiveDate) -> String {
+    use chrono::Datelike;
+    if start.year() == end.year() {
+        format!("{} – {}", start.format("%B %-d"), long_date(end))
+    } else {
+        format!("{} – {}", long_date(start), long_date(end))
+    }
+}
+
+/// Exact accounting format: thousands separators, two decimals, negatives
+/// in parentheses. "1,234.56", "(207.68)", "0.00". Never a float.
+pub fn format_amount(d: Decimal) -> String {
+    let negative = d.is_sign_negative() && !d.is_zero();
+    let fixed = format!("{:.2}", d.abs());
+    let (int, frac) = fixed.split_once('.').expect("two decimals");
+    let mut grouped = String::new();
+    for (i, c) in int.chars().enumerate() {
+        if i > 0 && (int.len() - i) % 3 == 0 {
+            grouped.push(',');
+        }
+        grouped.push(c);
+    }
+    if negative {
+        format!("({grouped}.{frac})")
+    } else {
+        format!("{grouped}.{frac}")
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::str::FromStr;
+
+    fn dec(s: &str) -> Decimal {
+        Decimal::from_str(s).unwrap()
+    }
+
+    #[test]
+    fn amounts_format_exactly() {
+        assert_eq!(format_amount(dec("0")), "0.00");
+        assert_eq!(format_amount(dec("-0")), "0.00");
+        assert_eq!(format_amount(dec("5.8")), "5.80");
+        assert_eq!(format_amount(dec("207.68")), "207.68");
+        assert_eq!(format_amount(dec("-207.68")), "(207.68)");
+        assert_eq!(format_amount(dec("1000")), "1,000.00");
+        assert_eq!(format_amount(dec("1234567.891")), "1,234,567.89");
+        assert_eq!(format_amount(dec("-100000")), "(100,000.00)");
+    }
+
+    #[test]
+    fn periods_read_like_english() {
+        let d = |y, m, dd| NaiveDate::from_ymd_opt(y, m, dd).unwrap();
+        assert_eq!(
+            period_label(d(2026, 10, 4), d(2026, 10, 11)),
+            "October 4 – October 11, 2026"
+        );
+        assert_eq!(
+            period_label(d(2026, 12, 1), d(2027, 1, 31)),
+            "December 1, 2026 – January 31, 2027"
+        );
+    }
+}

crates/ledger-import/src/xlsx.rs

@@ -2,12 +2,15 @@
 //!
 //! Money is converted to f64 ONLY at this presentation boundary — never in
 //! a money path. All accounting math stays `Decimal`; the conversion happens
-//! when writing a cell, rounded to cents.
+//! when writing a cell, rounded to cents. Cells stay numeric (so a CPA can
+//! sum them) with an accounting number format: thousands separators,
+//! negatives in parentheses.
 
+use crate::report::{ReportMeta, RowKind, Statement};
 use ledger_core::Ledger;
-use ledger_core::reports::{BalanceSheet, CashFlowStatement, ProfitAndLoss, TrialBalance};
+use ledger_core::reports::TrialBalance;
 use rust_decimal::Decimal;
-use rust_xlsxwriter::{Format, Workbook};
+use rust_xlsxwriter::{Format, FormatBorder, Workbook, Worksheet};
 use thiserror::Error;
 
 /// Which report to render.
@@ -15,12 +18,9 @@ use thiserror::Error;
 pub enum XlsxReport<'a> {
     /// Trial balance lines.
     TrialBalance(&'a TrialBalance),
-    /// Profit and loss.
-    ProfitAndLoss(&'a ProfitAndLoss, String, String),
-    /// Balance sheet.
-    BalanceSheet(&'a BalanceSheet, String),
-    /// Cash flow statement.
-    CashFlow(&'a CashFlowStatement),
+    /// A laid-out financial statement (P&L, balance sheet, cash flow); see
+    /// [`crate::report`].
+    Statement(&'a Statement),
     /// General ledger: every posted journal line. Needs the ledger for
     /// account names and class names.
     GeneralLedger(&'a Ledger),
@@ -34,155 +34,120 @@ pub enum XlsxError {
     Write(String),
 }
 
+impl From<rust_xlsxwriter::XlsxError> for XlsxError {
+    fn from(e: rust_xlsxwriter::XlsxError) -> Self {
+        XlsxError::Write(e.to_string())
+    }
+}
+
+const MONEY: &str = "#,##0.00;(#,##0.00)";
+
+/// Company name, title, and period across the top; returns the next row.
+fn header(
+    sheet: &mut Worksheet,
+    meta: &ReportMeta,
+    title: &str,
+    period: Option<&str>,
+) -> Result<u32, XlsxError> {
+    let bold = Format::new().set_bold();
+    sheet.write_string_with_format(0, 0, &meta.company, &bold.clone().set_font_size(14))?;
+    sheet.write_string_with_format(1, 0, title, &bold)?;
+    let mut row = 2;
+    if let Some(period) = period {
+        sheet.write_string(row, 0, period)?;
+        row += 1;
+    }
+    Ok(row + 1)
+}
+
+/// "Prepared from journal through seq N" under the last row.
+fn footer(sheet: &mut Worksheet, meta: &ReportMeta, row: u32) -> Result<(), XlsxError> {
+    let note = Format::new().set_italic().set_font_color("#666666");
+    sheet.write_string_with_format(
+        row + 1,
+        0,
+        format!("Prepared from journal through seq {}", meta.journal_seq),
+        &note,
+    )?;
+    Ok(())
+}
+
 /// Render a report to XLSX bytes.
-pub fn report_to_xlsx(report: &XlsxReport<'_>) -> Result<Vec<u8>, XlsxError> {
+pub fn report_to_xlsx(report: &XlsxReport<'_>, meta: &ReportMeta) -> Result<Vec<u8>, XlsxError> {
     let mut workbook = Workbook::new();
     let sheet = workbook.add_worksheet();
     let bold = Format::new().set_bold();
-    let money_fmt = Format::new().set_num_format("#,##0.00");
+    let money = Format::new().set_num_format(MONEY);
+    let money_bold = money.clone().set_bold();
 
-    let mut row: u32 = 0;
     match report {
         XlsxReport::TrialBalance(tb) => {
-            sheet.write_string(row, 0, "Trial Balance").unwrap();
-            row += 1;
+            sheet.set_name("Trial Balance")?;
+            let mut row = header(sheet, meta, "Trial Balance", None)?;
             for (i, h) in ["Code", "Account", "Debit", "Credit"].iter().enumerate() {
-                sheet
-                    .write_string_with_format(row, i as u16, *h, &bold)
-                    .unwrap();
+                sheet.write_string_with_format(row, i as u16, *h, &bold)?;
             }
             row += 1;
             for line in &tb.lines {
-                sheet.write_string(row, 0, &line.code).unwrap();
-                sheet.write_string(row, 1, &line.name).unwrap();
-                sheet
-                    .write_number_with_format(row, 2, dec_to_f64(line.debit), &money_fmt)
-                    .unwrap();
-                sheet
-                    .write_number_with_format(row, 3, dec_to_f64(line.credit), &money_fmt)
-                    .unwrap();
+                sheet.write_string(row, 0, &line.code)?;
+                sheet.write_string(row, 1, &line.name)?;
+                sheet.write_number_with_format(row, 2, dec_to_f64(line.debit), &money)?;
+                sheet.write_number_with_format(row, 3, dec_to_f64(line.credit), &money)?;
                 row += 1;
             }
+            let total = money_bold.clone().set_border_top(FormatBorder::Thin);
+            sheet.write_string_with_format(row, 1, "Total", &bold)?;
+            sheet.write_number_with_format(row, 2, dec_to_f64(tb.total_debits), &total)?;
+            sheet.write_number_with_format(row, 3, dec_to_f64(tb.total_credits), &total)?;
+            sheet.set_column_width(1, 40)?;
+            sheet.set_column_width(2, 14)?;
+            sheet.set_column_width(3, 14)?;
+            footer(sheet, meta, row + 1)?;
         }
-        XlsxReport::ProfitAndLoss(pl, start, end) => {
-            sheet
-                .write_string(row, 0, format!("Profit and Loss ({start} to {end})"))
-                .unwrap();
-            row += 2;
-            sheet.write_string(row, 0, "Revenue").unwrap();
-            sheet
-                .write_number_with_format(row, 1, dec_to_f64(pl.revenue), &money_fmt)
-                .unwrap();
-            row += 1;
-            sheet.write_string(row, 0, "Expenses").unwrap();
-            sheet
-                .write_number_with_format(row, 1, dec_to_f64(pl.expenses), &money_fmt)
-                .unwrap();
-            row += 1;
-            sheet
-                .write_string_with_format(row, 0, "Net income", &bold)
-                .unwrap();
-            let net = pl.revenue - pl.expenses;
-            sheet
-                .write_number_with_format(row, 1, dec_to_f64(net), &money_fmt)
-                .unwrap();
+        XlsxReport::Statement(st) => {
+            sheet.set_name(&st.title)?;
+            let mut row = header(sheet, meta, &st.title, Some(&st.period))?;
+            let line_label = Format::new().set_indent(1);
+            let subtotal = money_bold.clone().set_border_top(FormatBorder::Thin);
+            let total = money_bold
+                .clone()
+                .set_border_top(FormatBorder::Thin)
+                .set_border_bottom(FormatBorder::Double);
+            for r in &st.rows {
+                let amount = r.amount.map(dec_to_f64);
+                match r.kind {
+                    RowKind::Spacer => {}
+                    RowKind::Section => {
+                        sheet.write_string_with_format(row, 0, &r.label, &bold)?;
+                    }
+                    RowKind::Line => {
+                        sheet.write_string_with_format(row, 0, &r.label, &line_label)?;
+                        if let Some(a) = amount {
+                            sheet.write_number_with_format(row, 1, a, &money)?;
+                        }
+                    }
+                    RowKind::Subtotal => {
+                        sheet.write_string_with_format(row, 0, &r.label, &bold)?;
+                        if let Some(a) = amount {
+                            sheet.write_number_with_format(row, 1, a, &subtotal)?;
+                        }
+                    }
+                    RowKind::Total => {
+                        sheet.write_string_with_format(row, 0, &r.label, &bold)?;
+                        if let Some(a) = amount {
+                            sheet.write_number_with_format(row, 1, a, &total)?;
                         }
-        XlsxReport::BalanceSheet(bs, as_of) => {
-            sheet
-                .write_string(row, 0, format!("Balance Sheet (as of {as_of})"))
-                .unwrap();
-            row += 2;
-            for (label, val) in [
-                ("Assets", bs.assets),
-                ("Liabilities", bs.liabilities),
-                ("Equity", bs.equity),
-            ] {
-                sheet.write_string(row, 0, label).unwrap();
-                sheet
-                    .write_number_with_format(row, 1, dec_to_f64(val), &money_fmt)
-                    .unwrap();
-                row += 1;
                     }
                 }
-        XlsxReport::CashFlow(cf) => {
-            sheet
-                .write_string(row, 0, format!("Cash Flow ({} to {})", cf.start, cf.end))
-                .unwrap();
-            row += 2;
-            sheet
-                .write_string_with_format(row, 0, "Operating activities", &bold)
-                .unwrap();
-            row += 1;
-            sheet.write_string(row, 0, "Net income").unwrap();
-            sheet
-                .write_number_with_format(row, 1, dec_to_f64(cf.net_income), &money_fmt)
-                .unwrap();
-            row += 1;
-            sheet.write_string(row, 0, "Depreciation").unwrap();
-            sheet
-                .write_number_with_format(row, 1, dec_to_f64(cf.depreciation), &money_fmt)
-                .unwrap();
-            row += 1;
-            for line in &cf.working_capital {
-                sheet.write_string(row, 0, &line.label).unwrap();
-                sheet
-                    .write_number_with_format(row, 1, dec_to_f64(line.amount), &money_fmt)
-                    .unwrap();
                 row += 1;
             }
-            sheet
-                .write_string_with_format(row, 0, "Cash from operations", &bold)
-                .unwrap();
-            sheet
-                .write_number_with_format(row, 1, dec_to_f64(cf.cash_from_operations), &money_fmt)
-                .unwrap();
-            row += 2;
-            sheet
-                .write_string_with_format(row, 0, "Investing activities", &bold)
-                .unwrap();
-            row += 1;
-            for line in &cf.investing {
-                sheet.write_string(row, 0, &line.label).unwrap();
-                sheet
-                    .write_number_with_format(row, 1, dec_to_f64(line.amount), &money_fmt)
-                    .unwrap();
-                row += 1;
-            }
-            sheet
-                .write_string_with_format(row, 0, "Cash from investing", &bold)
-                .unwrap();
-            sheet
-                .write_number_with_format(row, 1, dec_to_f64(cf.cash_from_investing), &money_fmt)
-                .unwrap();
-            row += 2;
-            sheet
-                .write_string_with_format(row, 0, "Financing activities", &bold)
-                .unwrap();
-            row += 1;
-            for line in &cf.financing {
-                sheet.write_string(row, 0, &line.label).unwrap();
-                sheet
-                    .write_number_with_format(row, 1, dec_to_f64(line.amount), &money_fmt)
-                    .unwrap();
-                row += 1;
-            }
-            sheet
-                .write_string_with_format(row, 0, "Cash from financing", &bold)
-                .unwrap();
-            sheet
-                .write_number_with_format(row, 1, dec_to_f64(cf.cash_from_financing), &money_fmt)
-                .unwrap();
-            row += 2;
-            sheet
-                .write_string_with_format(row, 0, "Net change in cash", &bold)
-                .unwrap();
-            sheet
-                .write_number_with_format(row, 1, dec_to_f64(cf.net_change_in_cash), &money_fmt)
-                .unwrap();
+            sheet.set_column_width(0, 60)?;
+            sheet.set_column_width(1, 16)?;
+            footer(sheet, meta, row)?;
         }
         XlsxReport::GeneralLedger(ledger) => {
-            sheet.write_string(row, 0, "General Ledger").unwrap();
-            row += 1;
+            sheet.set_name("General Ledger")?;
+            let mut row = header(sheet, meta, "General Ledger", None)?;
             for (i, h) in [
                 "Date",
                 "Entry",
@@ -196,9 +161,7 @@ pub fn report_to_xlsx(report: &XlsxReport<'_>) -> Result<Vec<u8>, XlsxError> {
             .iter()
             .enumerate()
             {
-                sheet
-                    .write_string_with_format(row, i as u16, *h, &bold)
-                    .unwrap();
+                sheet.write_string_with_format(row, i as u16, *h, &bold)?;
             }
             row += 1;
             for entry in ledger.posted_entries() {
@@ -217,29 +180,24 @@ pub fn report_to_xlsx(report: &XlsxReport<'_>) -> Result<Vec<u8>, XlsxError> {
                         ledger_core::Side::Debit => (line.amount.amount, Decimal::ZERO),
                         ledger_core::Side::Credit => (Decimal::ZERO, line.amount.amount),
                     };
-                    sheet
-                        .write_string(row, 0, entry.date().to_string())
-                        .unwrap();
-                    sheet.write_number(row, 1, entry.id() as f64).unwrap();
-                    sheet.write_string(row, 2, entry.description()).unwrap();
-                    sheet.write_string(row, 3, code).unwrap();
-                    sheet.write_string(row, 4, name).unwrap();
-                    sheet.write_string(row, 5, class_name).unwrap();
-                    sheet
-                        .write_number_with_format(row, 6, dec_to_f64(debit), &money_fmt)
-                        .unwrap();
-                    sheet
-                        .write_number_with_format(row, 7, dec_to_f64(credit), &money_fmt)
-                        .unwrap();
+                    sheet.write_string(row, 0, entry.date().to_string())?;
+                    sheet.write_number(row, 1, entry.id() as f64)?;
+                    sheet.write_string(row, 2, entry.description())?;
+                    sheet.write_string(row, 3, code)?;
+                    sheet.write_string(row, 4, name)?;
+                    sheet.write_string(row, 5, class_name)?;
+                    sheet.write_number_with_format(row, 6, dec_to_f64(debit), &money)?;
+                    sheet.write_number_with_format(row, 7, dec_to_f64(credit), &money)?;
                     row += 1;
                 }
             }
+            sheet.set_column_width(2, 50)?;
+            sheet.set_column_width(4, 32)?;
+            footer(sheet, meta, row)?;
         }
     }
 
-    workbook
-        .save_to_buffer()
-        .map_err(|e| XlsxError::Write(e.to_string()))
+    Ok(workbook.save_to_buffer()?)
 }
 
 /// Decimal to f64 at the presentation boundary. Rounded to cents first.
@@ -265,7 +223,11 @@ mod tests {
             total_debits: Decimal::new(10000, 2),
             total_credits: Decimal::new(10000, 2),
         };
-        let bytes = report_to_xlsx(&XlsxReport::TrialBalance(&tb)).unwrap();
+        let meta = ReportMeta {
+            company: "Test Co".to_string(),
+            journal_seq: 7,
+        };
+        let bytes = report_to_xlsx(&XlsxReport::TrialBalance(&tb), &meta).unwrap();
         // XLSX is a ZIP: starts with PK.
         assert_eq!(&bytes[0..2], b"PK");
         assert!(bytes.len() > 1000);

crates/ledger-mcp/Cargo.toml

@@ -27,6 +27,7 @@ chrono = "0.4"
 thiserror = "2"
 tokio = { version = "1", features = ["rt-multi-thread", "macros", "io-util", "sync"] }
 zip = "9.0.1"
+toml = "1"
 
 [lints]
 workspace = true

crates/ledger-mcp/src/company.rs

@@ -0,0 +1,184 @@
+//! Company settings from the books dir's `wanderbooks.toml`.
+//!
+//! `wanderbooks init` writes that file next to `books-data/`; onboarding
+//! fills in `[company]`. The server reads the company name (report headers),
+//! the fiscal year start (fiscal-year-to-date reports), and
+//! `[books] receipt_threshold` (the receipt policy, unless `config.json`
+//! sets one). The fiscal year *end* is never stored: it is the day before
+//! the next start, so the two can't disagree.
+
+use chrono::{Datelike, NaiveDate};
+use rust_decimal::Decimal;
+use serde::Deserialize;
+use std::path::Path;
+
+/// The company the books belong to.
+#[derive(Clone, Debug, PartialEq)]
+pub struct Company {
+    /// Legal name, for report headers.
+    pub name: String,
+    /// Month and day the fiscal year starts. Default January 1.
+    pub fiscal_year_start: (u32, u32),
+}
+
+impl Default for Company {
+    fn default() -> Self {
+        Self {
+            name: "Unnamed company".to_string(),
+            fiscal_year_start: (1, 1),
+        }
+    }
+}
+
+impl Company {
+    /// The fiscal year containing `d`: `(first day, last day)`, inclusive.
+    pub fn fiscal_year_containing(&self, d: NaiveDate) -> (NaiveDate, NaiveDate) {
+        let (m, day) = self.fiscal_year_start;
+        let on = |year| NaiveDate::from_ymd_opt(year, m, day).expect("validated month-day");
+        let start = if on(d.year()) <= d {
+            on(d.year())
+        } else {
+            on(d.year() - 1)
+        };
+        let end = on(start.year() + 1)
+            .pred_opt()
+            .expect("not the minimum date");
+        (start, end)
+    }
+}
+
+/// What the server takes from `wanderbooks.toml`.
+#[derive(Clone, Debug, Default, PartialEq)]
+pub struct BooksSettings {
+    /// `[company]`.
+    pub company: Company,
+    /// `[books] receipt_threshold`, validated as a decimal string.
+    pub receipt_threshold: Option<String>,
+}
+
+#[derive(Deserialize)]
+struct BooksToml {
+    #[serde(default)]
+    company: CompanyToml,
+    #[serde(default)]
+    books: BooksSection,
+}
+
+#[derive(Default, Deserialize)]
+struct CompanyToml {
+    name: Option<String>,
+    fiscal_year_start: Option<String>,
+}
+
+#[derive(Default, Deserialize)]
+struct BooksSection {
+    receipt_threshold: Option<String>,
+}
+
+/// Parse `"MM-DD"`. February 29 is rejected: a fiscal year must start on a
+/// day every year has.
+fn parse_month_day(s: &str) -> Result<(u32, u32), String> {
+    let bad = || format!("fiscal_year_start {s:?}: expected \"MM-DD\", e.g. \"01-01\"");
+    let (m, d) = s.split_once('-').ok_or_else(bad)?;
+    let (m, d): (u32, u32) = (m.parse().map_err(|_| bad())?, d.parse().map_err(|_| bad())?);
+    // 2001 is not a leap year: a valid date there exists every year.
+    NaiveDate::from_ymd_opt(2001, m, d)
+        .ok_or_else(|| format!("fiscal_year_start {s:?} is not a day every year has"))?;
+    Ok((m, d))
+}
+
+/// Parse `wanderbooks.toml` text.
+pub fn parse(text: &str) -> Result<BooksSettings, String> {
+    let raw: BooksToml = toml::from_str(text).map_err(|e| e.to_string())?;
+    let mut company = Company::default();
+    if let Some(name) = raw.company.name.filter(|n| !n.trim().is_empty()) {
+        company.name = name.trim().to_string();
+    }
+    if let Some(fy) = raw.company.fiscal_year_start {
+        company.fiscal_year_start = parse_month_day(fy.trim())?;
+    }
+    let receipt_threshold = match raw.books.receipt_threshold {
+        Some(t) => {
+            t.trim()
+                .parse::<Decimal>()
+                .map_err(|_| format!("receipt_threshold {t:?} is not a decimal"))?;
+            Some(t.trim().to_string())
+        }
+        None => None,
+    };
+    Ok(BooksSettings {
+        company,
+        receipt_threshold,
+    })
+}
+
+/// Load `wanderbooks.toml` from a path.
+pub fn load(path: &Path) -> Result<BooksSettings, String> {
+    let text = std::fs::read_to_string(path).map_err(|e| format!("{}: {e}", path.display()))?;
+    parse(&text).map_err(|e| format!("{}: {e}", path.display()))
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn d(y: i32, m: u32, day: u32) -> NaiveDate {
+        NaiveDate::from_ymd_opt(y, m, day).unwrap()
+    }
+
+    #[test]
+    fn calendar_year_by_default() {
+        let c = parse("").unwrap().company;
+        assert_eq!(c.fiscal_year_start, (1, 1));
+        assert_eq!(
+            c.fiscal_year_containing(d(2026, 10, 11)),
+            (d(2026, 1, 1), d(2026, 12, 31))
+        );
+        assert_eq!(
+            c.fiscal_year_containing(d(2026, 1, 1)),
+            (d(2026, 1, 1), d(2026, 12, 31))
+        );
+    }
+
+    #[test]
+    fn a_july_fiscal_year_spans_two_calendar_years() {
+        let c = parse("[company]\nfiscal_year_start = \"07-01\"\n")
+            .unwrap()
+            .company;
+        assert_eq!(
+            c.fiscal_year_containing(d(2026, 3, 15)),
+            (d(2025, 7, 1), d(2026, 6, 30))
+        );
+        assert_eq!(
+            c.fiscal_year_containing(d(2026, 7, 1)),
+            (d(2026, 7, 1), d(2027, 6, 30))
+        );
+        assert_eq!(
+            c.fiscal_year_containing(d(2026, 6, 30)),
+            (d(2025, 7, 1), d(2026, 6, 30))
+        );
+    }
+
+    #[test]
+    fn reads_the_scaffolded_file() {
+        let s = parse(
+            "[company]\nname = \"Wanderland Labs LLC\"\nentity_type = \"x\"\nfiscal_year_start = \"01-01\"\n\n[books]\ndata_dir = \"books-data\"\nreceipt_threshold = \"25.00\"\n",
+        )
+        .unwrap();
+        assert_eq!(s.company.name, "Wanderland Labs LLC");
+        assert_eq!(s.receipt_threshold.as_deref(), Some("25.00"));
+        // An empty name (fresh scaffold) keeps the placeholder.
+        assert_eq!(
+            parse("[company]\nname = \"\"\n").unwrap().company.name,
+            "Unnamed company"
+        );
+    }
+
+    #[test]
+    fn rejects_bad_settings() {
+        assert!(parse("[company]\nfiscal_year_start = \"02-29\"\n").is_err());
+        assert!(parse("[company]\nfiscal_year_start = \"13-01\"\n").is_err());
+        assert!(parse("[company]\nfiscal_year_start = \"Jan 1\"\n").is_err());
+        assert!(parse("[books]\nreceipt_threshold = \"25 dollars\"\n").is_err());
+    }
+}

crates/ledger-mcp/src/main.rs

@@ -1,12 +1,15 @@
 //! `ledger-mcp`: the AI-first bookkeeping interface, over stdio.
 //!
-//! Usage: `ledger-mcp [--data-dir PATH] [--config PATH]`
+//! Usage: `ledger-mcp [--data-dir PATH] [--config PATH] [--books-toml PATH]`
 //!
 //! The data dir holds `journal.jsonl` (the source of truth), `wanderbooks.db`
 //! (the disposable SQLite projection), `blobs/` (content-addressed receipts),
 //! and optionally `config.json`. If no store exists, one is created with the
-//! configured base currency.
+//! configured base currency. Company settings (name, fiscal year start,
+//! receipt threshold) come from the books dir's `wanderbooks.toml`, by
+//! default the one next to the data dir.
 
+mod company;
 mod policy;
 mod server;
 mod types;
@@ -25,9 +28,10 @@ struct Config {
     /// ISO 4217 base currency for a new store. Default "USD".
     #[serde(default)]
     base_currency: Option<String>,
-    /// Receipt policy. Defaults to require-receipts-above $25.00.
+    /// Receipt policy. Overrides `wanderbooks.toml`'s receipt_threshold;
+    /// with neither, receipts are required above $25.00.
     #[serde(default)]
-    receipt_policy: ReceiptPolicy,
+    receipt_policy: Option<ReceiptPolicy>,
 }
 
 fn default_data_dir() -> PathBuf {
@@ -36,15 +40,23 @@ fn default_data_dir() -> PathBuf {
 }
 
 fn print_usage() {
-    eprintln!("usage: ledger-mcp [--data-dir PATH] [--config PATH] [--http ADDR]");
+    eprintln!(
+        "usage: ledger-mcp [--data-dir PATH] [--config PATH] [--books-toml PATH] [--http ADDR]"
+    );
     eprintln!("  --data-dir  directory holding journal.jsonl (default ~/.local/share/wanderbooks)");
     eprintln!("  --config    JSON config file (default <data-dir>/config.json, optional)");
-    eprintln!("  --http      serve over Streamable HTTP at ADDR (e.g. 127.0.0.1:8080) instead of stdio");
+    eprintln!(
+        "  --books-toml  company settings (default <data-dir>/../wanderbooks.toml, optional)"
+    );
+    eprintln!(
+        "  --http      serve over Streamable HTTP at ADDR (e.g. 127.0.0.1:8080) instead of stdio"
+    );
 }
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     let mut data_dir = default_data_dir();
     let mut config_path: Option<PathBuf> = None;
+    let mut books_toml: Option<PathBuf> = None;
     let mut http_addr: Option<String> = None;
     let mut args = std::env::args().skip(1);
     while let Some(arg) = args.next() {
@@ -55,6 +67,11 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
             "--config" => {
                 config_path = Some(PathBuf::from(args.next().ok_or("--config needs a path")?));
             }
+            "--books-toml" => {
+                books_toml = Some(PathBuf::from(
+                    args.next().ok_or("--books-toml needs a path")?,
+                ));
+            }
             "--http" => {
                 http_addr = Some(args.next().ok_or("--http needs an address")?);
             }
@@ -79,6 +96,24 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     };
     // Logs go to stderr: stdout is the MCP channel.
     eprintln!("ledger-mcp: data dir {}", data_dir.display());
+    // An explicit --books-toml must exist; the default is optional.
+    let settings = match books_toml {
+        Some(path) => company::load(&path)?,
+        None => match data_dir.parent().map(|p| p.join("wanderbooks.toml")) {
+            Some(path) if path.exists() => company::load(&path)?,
+            _ => company::BooksSettings::default(),
+        },
+    };
+    eprintln!("ledger-mcp: company {:?}", settings.company.name);
+    let policy = match (config.receipt_policy, settings.receipt_threshold) {
+        (Some(policy), _) => policy,
+        (None, Some(threshold)) => ReceiptPolicy {
+            require_receipts_above: threshold,
+            ..ReceiptPolicy::default()
+        },
+        (None, None) => ReceiptPolicy::default(),
+    };
+    let company = settings.company;
 
     let store = if data_dir.join(ledger_store::JOURNAL_FILE).exists() {
         Store::open(&data_dir)?
@@ -99,12 +134,12 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         .build()?;
     if let Some(addr) = http_addr {
         eprintln!("ledger-mcp: store verified, serving Streamable HTTP on {addr}");
-        rt.block_on(serve_http(addr, store, config.receipt_policy))?;
+        rt.block_on(serve_http(addr, store, policy, company))?;
         return Ok(());
     }
 
     eprintln!("ledger-mcp: store verified, serving over stdio");
-    let server = BooksServer::new(store, config.receipt_policy);
+    let server = BooksServer::new(store, policy).with_company(company);
     rt.block_on(async {
         let running = server.serve(stdio()).await?;
         let _ = running.waiting().await;
@@ -117,6 +152,7 @@ async fn serve_http(
     addr: String,
     store: Store,
     policy: ReceiptPolicy,
+    company: company::Company,
 ) -> Result<(), Box<dyn std::error::Error>> {
     use rmcp::transport::streamable_http_server::{
         StreamableHttpService, session::local::LocalSessionManager,
@@ -126,7 +162,8 @@ async fn serve_http(
     let store = Arc::new(std::sync::Mutex::new(store));
     let service = StreamableHttpService::new(
         move || {
-            let server = server::BooksServer::new_shared(store.clone(), policy.clone());
+            let server = server::BooksServer::new_shared(store.clone(), policy.clone())
+                .with_company(company.clone());
             Ok(server)
         },
         Arc::new(LocalSessionManager::default()),

crates/ledger-mcp/src/server.rs

@@ -1,14 +1,16 @@
 //! The MCP server: narrow typed tools over the store, with the receipt
 //! policy enforced server-side.
 
+use crate::company::Company;
 use crate::policy::ReceiptPolicy;
 use crate::types::*;
-use chrono::{Datelike, NaiveDate};
+use chrono::NaiveDate;
 use ledger_core::{
     AccountId, AccountType, AssetStatus, Currency, DocumentLine, DocumentStatus, JournalEntry,
     Ledger, Money, NewAsset, PeriodStatus, Side, accumulated_depreciation, book_value,
     depreciation_schedule, reports,
 };
+use ledger_import::ReportMeta;
 use ledger_store::Store;
 use rmcp::handler::server::wrapper::{Json, Parameters};
 use rmcp::model::{
@@ -33,6 +35,7 @@ const MAX_UPLOAD_BYTES: usize = 25 * 1024 * 1024;
 pub struct BooksServer {
     store: Arc<Mutex<Store>>,
     policy: ReceiptPolicy,
+    company: Company,
 }
 
 impl BooksServer {
@@ -41,13 +44,32 @@ impl BooksServer {
         Self {
             store: Arc::new(Mutex::new(store)),
             policy,
+            company: Company::default(),
         }
     }
 
     /// Build the server around a shared store (for HTTP: each connection
     /// gets a handle to the same store).
     pub fn new_shared(store: Arc<Mutex<Store>>, policy: ReceiptPolicy) -> Self {
-        Self { store, policy }
+        Self {
+            store,
+            policy,
+            company: Company::default(),
+        }
+    }
+
+    /// Set the company (name for report headers, fiscal year).
+    pub fn with_company(mut self, company: Company) -> Self {
+        self.company = company;
+        self
+    }
+
+    /// Header and provenance for a rendered report.
+    fn report_meta(&self, store: &Store) -> ReportMeta {
+        ReportMeta {
+            company: self.company.name.clone(),
+            journal_seq: store.journal_seq(),
+        }
     }
 
     fn lock(&self) -> Result<std::sync::MutexGuard<'_, Store>, String> {
@@ -283,14 +305,7 @@ fn cash_flow_statement(
         return Err("cash_accounts is required for the cash flow statement".to_string());
     }
     let financing_accounts = resolve(financing_codes, "financing")?;
-    let start = match start {
-        Some(s) => parse_date(s)?,
-        None => NaiveDate::from_ymd_opt(1, 1, 1).unwrap(),
-    };
-    let end = match end {
-        Some(s) => parse_date(s)?,
-        None => chrono::Utc::now().date_naive(),
-    };
+    let (start, end) = statement_range(ledger, start, end)?;
     ledger_core::cash_flow(
         ledger,
         &ledger_core::CashFlowParams {
@@ -303,50 +318,13 @@ fn cash_flow_statement(
     .map_err(|e| e.to_string())
 }
 
-/// Net movement of one account over entries on or before `through`, in the
-/// account's normal side.
-fn movement_through(ledger: &Ledger, account: AccountId, through: NaiveDate) -> Decimal {
-    let movement: Decimal = ledger
-        .posted_entries()
-        .filter(|e| e.date() <= through)
-        .flat_map(|e| e.lines())
-        .filter(|l| l.account == account)
-        .map(|l| match l.side {
-            Side::Debit => l.amount.amount,
-            Side::Credit => -l.amount.amount,
-        })
-        .sum();
-    let account = ledger.chart().get(account).expect("account exists");
-    match account.account_type.normal_side() {
-        Side::Debit => movement,
-        Side::Credit => -movement,
-    }
-}
-
 /// Net movement of one account over entries in `[from, to]`, normal side.
 fn movement_in(ledger: &Ledger, account: AccountId, from: NaiveDate, to: NaiveDate) -> Decimal {
-    movement_in_class(ledger, account, from, to, None)
-}
-
-/// Signed movement of an account in its normal side over a date range,
-/// optionally filtered to one class. `None` class matches all lines
-/// (including untagged ones); `Some(id)` matches only lines tagged with it.
-fn movement_in_class(
-    ledger: &Ledger,
-    account: AccountId,
-    from: NaiveDate,
-    to: NaiveDate,
-    class_id: Option<u32>,
-) -> Decimal {
     let movement: Decimal = ledger
         .posted_entries()
         .filter(|e| e.date() >= from && e.date() <= to)
         .flat_map(|e| e.lines())
         .filter(|l| l.account == account)
-        .filter(|l| match class_id {
-            None => true,
-            Some(cid) => l.class_id == Some(cid),
-        })
         .map(|l| match l.side {
             Side::Debit => l.amount.amount,
             Side::Credit => -l.amount.amount,
@@ -359,6 +337,70 @@ fn movement_in_class(
     }
 }
 
+fn today() -> NaiveDate {
+    chrono::Utc::now().date_naive()
+}
+
+/// Resolve a statement's date range: `end` defaults to today and `start` to
+/// the first posted entry (where "from the beginning" really begins, so no
+/// statement says "0001-01-01"), or to `end` for empty books.
+fn statement_range(
+    ledger: &Ledger,
+    start: Option<&str>,
+    end: Option<&str>,
+) -> Result<(NaiveDate, NaiveDate), String> {
+    let end = match end {
+        Some(s) => parse_date(s)?,
+        None => today(),
+    };
+    let start = match start {
+        Some(s) => parse_date(s)?,
+        None => ledger
+            .posted_entries()
+            .map(|e| e.date())
+            .min()
+            .map_or(end, |first| first.min(end)),
+    };
+    if end < start {
+        return Err("end is before start".to_string());
+    }
+    Ok((start, end))
+}
+
+/// Profit and loss for a range (see [`statement_range`]), optionally one class.
+fn pnl_statement(
+    ledger: &Ledger,
+    start: Option<&str>,
+    end: Option<&str>,
+    class_id: Option<ledger_core::ClassId>,
+) -> Result<ledger_core::ProfitAndLossStatement, String> {
+    let (start, end) = statement_range(ledger, start, end)?;
+    ledger_core::profit_and_loss_for_period(ledger, start, end, class_id).map_err(|e| e.to_string())
+}
+
+/// Balance sheet as of a date (default today).
+fn bs_statement(
+    ledger: &Ledger,
+    as_of: Option<&str>,
+) -> Result<ledger_core::BalanceSheetStatement, String> {
+    let as_of = match as_of {
+        Some(s) => parse_date(s)?,
+        None => today(),
+    };
+    ledger_core::balance_sheet_as_of(ledger, as_of).map_err(|e| e.to_string())
+}
+
+fn lines_out(lines: &[ledger_core::StatementLine]) -> Vec<StatementLineOut> {
+    lines
+        .iter()
+        .map(|l| StatementLineOut {
+            code: l.code.clone(),
+            name: l.name.clone(),
+            amount: money(l.amount),
+        })
+        .collect()
+}
+
 // ---------------------------------------------------------------------------
 // Tools
 // ---------------------------------------------------------------------------
@@ -456,44 +498,24 @@ impl BooksServer {
     ) -> Result<Json<ProfitAndLossOut>, String> {
         let p = params.0;
         let store = self.lock()?;
-        let ledger = store.ledger();
-        let start = match p.start {
-            Some(s) => parse_date(&s)?,
-            None => NaiveDate::from_ymd_opt(1, 1, 1).unwrap(),
-        };
-        let end = match p.end {
-            Some(s) => parse_date(&s)?,
-            None => chrono::Utc::now().date_naive(),
-        };
-        if end < start {
-            return Err("end is before start".to_string());
-        }
-        let class_id = match p.class {
-            Some(c) => Some(resolve_class(&store, &c)?),
+        let class_id = match &p.class {
+            Some(c) => Some(resolve_class(&store, c)?),
             None => None,
         };
-        let mut revenue = Decimal::ZERO;
-        let mut expenses = Decimal::ZERO;
-        for a in ledger.chart().all() {
-            if a.placeholder {
-                continue;
-            }
-            match a.account_type {
-                AccountType::Revenue => {
-                    revenue += movement_in_class(ledger, a.id, start, end, class_id)
-                }
-                AccountType::Expense => {
-                    expenses += movement_in_class(ledger, a.id, start, end, class_id)
-                }
-                _ => {}
-            }
-        }
+        let pl = pnl_statement(
+            store.ledger(),
+            p.start.as_deref(),
+            p.end.as_deref(),
+            class_id,
+        )?;
         Ok(Json(ProfitAndLossOut {
-            start: start.to_string(),
-            end: end.to_string(),
-            revenue: money(revenue),
-            expenses: money(expenses),
-            net_income: money(revenue - expenses),
+            start: pl.start.to_string(),
+            end: pl.end.to_string(),
+            revenue: money(pl.total_revenue),
+            expenses: money(pl.total_expenses),
+            net_income: money(pl.net_income()),
+            revenue_accounts: lines_out(&pl.revenue),
+            expense_accounts: lines_out(&pl.expenses),
         }))
     }
 
@@ -508,38 +530,17 @@ impl BooksServer {
     ) -> Result<Json<BalanceSheetOut>, String> {
         let p = params.0;
         let store = self.lock()?;
-        let ledger = store.ledger();
-        let as_of = match p.as_of {
-            Some(s) => parse_date(&s)?,
-            None => chrono::Utc::now().date_naive(),
-        };
-        let mut assets = Decimal::ZERO;
-        let mut liabilities = Decimal::ZERO;
-        let mut equity = Decimal::ZERO;
-        let mut revenue = Decimal::ZERO;
-        let mut expenses = Decimal::ZERO;
-        for a in ledger.chart().all() {
-            if a.placeholder {
-                continue;
-            }
-            let m = movement_through(ledger, a.id, as_of);
-            match a.account_type {
-                AccountType::Asset => assets += m,
-                AccountType::Liability => liabilities += m,
-                AccountType::Equity => equity += m,
-                AccountType::Revenue => revenue += m,
-                AccountType::Expense => expenses += m,
-            }
-        }
-        let current_earnings = revenue - expenses;
-        equity += current_earnings;
+        let bs = bs_statement(store.ledger(), p.as_of.as_deref())?;
         Ok(Json(BalanceSheetOut {
-            as_of: as_of.to_string(),
-            assets: money(assets),
-            liabilities: money(liabilities),
-            equity: money(equity),
-            current_earnings: money(current_earnings),
-            balanced: assets == liabilities + equity,
+            as_of: bs.as_of.to_string(),
+            assets: money(bs.total_assets),
+            liabilities: money(bs.total_liabilities),
+            equity: money(bs.total_equity),
+            current_earnings: money(bs.current_earnings),
+            balanced: bs.balanced(),
+            asset_accounts: lines_out(&bs.assets),
+            liability_accounts: lines_out(&bs.liabilities),
+            equity_accounts: lines_out(&bs.equity),
         }))
     }
 
@@ -1437,48 +1438,23 @@ impl BooksServer {
         }))
     }
 
-    /// Render a report to XLSX bytes via ledger-import.
-    fn export_xlsx(&self, report: &str, p: &ExportParams) -> Result<Vec<u8>, String> {
-        use ledger_import::{XlsxReport, report_to_xlsx};
-        let store = self.lock()?;
-        let ledger = store.ledger();
-        // Build owned report data first (all report structs are owned).
-        enum Owned {
-            Tb(ledger_core::reports::TrialBalance),
-            Pnl(ledger_core::reports::ProfitAndLoss, String, String),
-            Bs(ledger_core::reports::BalanceSheet, String),
-            Cf(ledger_core::reports::CashFlowStatement),
-        }
-        let owned = match report {
-            "trial_balance" => Owned::Tb(reports::trial_balance(ledger)),
-            "profit_and_loss" => {
-                let start = match &p.start {
-                    Some(s) => parse_date(s)?,
-                    None => NaiveDate::from_ymd_opt(1, 1, 1).unwrap(),
-                };
-                let end = match &p.end {
-                    Some(s) => parse_date(s)?,
-                    None => chrono::Utc::now().date_naive(),
-                };
-                Owned::Pnl(
-                    reports::profit_and_loss(ledger).map_err(|e| e.to_string())?,
-                    start.to_string(),
-                    end.to_string(),
-                )
-            }
-            "balance_sheet" => {
-                let as_of = match &p.as_of {
-                    Some(s) => parse_date(s)?,
-                    None => chrono::Utc::now().date_naive(),
-                };
-                // Engine balance_sheet is as-of now; xlsx uses the same.
-                // (The books.balance_sheet tool does as-of via movement_through.)
-                Owned::Bs(
-                    reports::balance_sheet(ledger).map_err(|e| e.to_string())?,
-                    as_of.to_string(),
-                )
-            }
-            "cash_flow" => Owned::Cf(cash_flow_statement(
+    /// Lay out a financial statement for rendering, from export params.
+    fn layout_statement(
+        &self,
+        ledger: &Ledger,
+        report: &str,
+        p: &ExportParams,
+    ) -> Result<ledger_import::Statement, String> {
+        use ledger_import::report;
+        Ok(match report {
+            "profit_and_loss" => report::profit_and_loss(&pnl_statement(
+                ledger,
+                p.start.as_deref(),
+                p.end.as_deref(),
+                None,
+            )?),
+            "balance_sheet" => report::balance_sheet(&bs_statement(ledger, p.as_of.as_deref())?),
+            "cash_flow" => report::cash_flow(&cash_flow_statement(
                 ledger,
                 p.start.as_deref(),
                 p.end.as_deref(),
@@ -1487,47 +1463,35 @@ impl BooksServer {
             )?),
             _ => {
                 return Err(format!(
-                    "bad report {report:?} for xlsx: expected trial_balance, profit_and_loss, balance_sheet, or cash_flow"
+                    "bad report {report:?}: expected profit_and_loss, balance_sheet, or cash_flow"
                 ));
             }
-        };
-        let xlsx_report = match &owned {
-            Owned::Tb(tb) => XlsxReport::TrialBalance(tb),
-            Owned::Pnl(pl, s, e) => XlsxReport::ProfitAndLoss(pl, s.clone(), e.clone()),
-            Owned::Bs(bs, a) => XlsxReport::BalanceSheet(bs, a.clone()),
-            Owned::Cf(cf) => XlsxReport::CashFlow(cf),
-        };
-        report_to_xlsx(&xlsx_report).map_err(|e| e.to_string())
+        })
+    }
+
+    /// Render a report to XLSX bytes via ledger-import.
+    fn export_xlsx(&self, report: &str, p: &ExportParams) -> Result<Vec<u8>, String> {
+        use ledger_import::{XlsxReport, report_to_xlsx};
+        let store = self.lock()?;
+        let meta = self.report_meta(&store);
+        let ledger = store.ledger();
+        if report == "trial_balance" {
+            let tb = reports::trial_balance(ledger);
+            return report_to_xlsx(&XlsxReport::TrialBalance(&tb), &meta)
+                .map_err(|e| e.to_string());
+        }
+        let st = self.layout_statement(ledger, report, p)?;
+        report_to_xlsx(&XlsxReport::Statement(&st), &meta).map_err(|e| e.to_string())
     }
 
     /// Render a financial statement to PDF bytes via ledger-import.
     fn export_pdf(&self, report: &str, p: &ExportParams) -> Result<Vec<u8>, String> {
         let store = self.lock()?;
-        let ledger = store.ledger();
-        let today = || chrono::Utc::now().date_naive().to_string();
-        match report {
-            "profit_and_loss" => ledger_import::profit_and_loss_pdf(
-                ledger,
-                p.start.as_deref().unwrap_or("0001-01-01"),
-                &p.end.clone().unwrap_or_else(today),
-            ),
-            "balance_sheet" => {
-                ledger_import::balance_sheet_pdf(ledger, &p.as_of.clone().unwrap_or_else(today))
-            }
-            "cash_flow" => ledger_import::cash_flow_pdf(&cash_flow_statement(
-                ledger,
-                p.start.as_deref(),
-                p.end.as_deref(),
-                &p.cash_accounts,
-                &p.financing_accounts,
-            )?),
-            _ => {
-                return Err(format!(
-                    "bad report {report:?} for pdf: expected profit_and_loss, balance_sheet, or cash_flow"
-                ));
-            }
-        }
-        .map_err(|e| e.to_string())
+        let meta = self.report_meta(&store);
+        let st = self
+            .layout_statement(store.ledger(), report, p)
+            .map_err(|e| e.replace("bad report", "bad report for pdf"))?;
+        ledger_import::statement_pdf(&st, &meta).map_err(|e| e.to_string())
     }
 
     /// Render the journal as IIF text via ledger-import.
@@ -2541,44 +2505,42 @@ impl BooksServer {
         &self,
         params: Parameters<ExportCpaPackageParams>,
     ) -> Result<Json<ExportCpaPackageOut>, String> {
-        use ledger_import::{XlsxReport, report_to_xlsx};
+        use ledger_import::{XlsxReport, report, report_to_xlsx, statement_pdf};
         let p = params.0;
         let as_of = match p.as_of {
             Some(s) => parse_date(&s)?,
-            None => chrono::Utc::now().date_naive(),
+            None => today(),
         };
         let store = self.lock()?;
+        let meta = self.report_meta(&store);
         let ledger = store.ledger();
 
-        // Fiscal year to date for the P&L: Jan 1 of the as_of year.
-        let fy_start = NaiveDate::from_ymd_opt(as_of.year(), 1, 1).unwrap();
+        // Fiscal year to date, per wanderbooks.toml's fiscal_year_start.
+        let (fy_start, _) = self.company.fiscal_year_containing(as_of);
+        let (fy_start, as_of_s) = (fy_start.to_string(), as_of.to_string());
+        let xlsx = |r: XlsxReport<'_>| report_to_xlsx(&r, &meta).map_err(|e| e.to_string());
+        let pdf =
+            |st: ledger_import::Statement| statement_pdf(&st, &meta).map_err(|e| e.to_string());
 
-        // 1. Trial balance XLSX.
-        let tb = ledger_core::reports::trial_balance(ledger);
-        let tb_xlsx = report_to_xlsx(&XlsxReport::TrialBalance(&tb)).map_err(|e| e.to_string())?;
-
-        // 2. General ledger XLSX (every posted line).
-        let gl_xlsx =
-            report_to_xlsx(&XlsxReport::GeneralLedger(ledger)).map_err(|e| e.to_string())?;
-
-        // 3. P&L PDF (fiscal year to date).
-        let pnl_pdf =
-            ledger_import::profit_and_loss_pdf(ledger, &fy_start.to_string(), &as_of.to_string())
-                .map_err(|e| e.to_string())?;
-
-        // 4. Balance sheet PDF.
-        let bs_pdf = ledger_import::balance_sheet_pdf(ledger, &as_of.to_string())
-            .map_err(|e| e.to_string())?;
-
-        // 5. Cash flow PDF (fiscal year to date, like the P&L).
-        let cf = cash_flow_statement(
+        let tb_xlsx = xlsx(XlsxReport::TrialBalance(&reports::trial_balance(ledger)))?;
+        let gl_xlsx = xlsx(XlsxReport::GeneralLedger(ledger))?;
+        let pnl_pdf = pdf(report::profit_and_loss(&pnl_statement(
             ledger,
-            Some(&fy_start.to_string()),
-            Some(&as_of.to_string()),
+            Some(&fy_start),
+            Some(&as_of_s),
+            None,
+        )?))?;
+        let bs_pdf = pdf(report::balance_sheet(&bs_statement(
+            ledger,
+            Some(&as_of_s),
+        )?))?;
+        let cf_pdf = pdf(report::cash_flow(&cash_flow_statement(
+            ledger,
+            Some(&fy_start),
+            Some(&as_of_s),
             &p.cash_accounts,
             &p.financing_accounts,
-        )?;
-        let cf_pdf = ledger_import::cash_flow_pdf(&cf).map_err(|e| e.to_string())?;
+        )?))?;
         drop(store);
 
         // Zip it.
@@ -2708,86 +2670,75 @@ impl BooksServer {
         end: Option<&str>,
     ) -> Result<String, String> {
         let store = self.lock()?;
-        let ledger = store.ledger();
-        let start_d = match start {
-            Some(s) => parse_date(s)?,
-            None => NaiveDate::from_ymd_opt(1, 1, 1).unwrap(),
-        };
-        let end_d = match end {
-            Some(s) => parse_date(s)?,
-            None => chrono::Utc::now().date_naive(),
-        };
-        let mut revenue = Decimal::ZERO;
-        let mut expenses = Decimal::ZERO;
-        for a in ledger.chart().all() {
-            if a.placeholder {
-                continue;
-            }
-            match a.account_type {
-                AccountType::Revenue => revenue += movement_in(ledger, a.id, start_d, end_d),
-                AccountType::Expense => expenses += movement_in(ledger, a.id, start_d, end_d),
-                _ => {}
-            }
-        }
+        let pl = pnl_statement(store.ledger(), start, end, None)?;
         if format == "json" {
             return serde_json::to_string_pretty(&serde_json::json!({
-                "start": start_d.to_string(), "end": end_d.to_string(),
-                "revenue": money(revenue), "expenses": money(expenses),
-                "net_income": money(revenue - expenses),
+                "start": pl.start.to_string(), "end": pl.end.to_string(),
+                "revenue_accounts": lines_out(&pl.revenue),
+                "expense_accounts": lines_out(&pl.expenses),
+                "revenue": money(pl.total_revenue), "expenses": money(pl.total_expenses),
+                "net_income": money(pl.net_income()),
             }))
             .map_err(|e| e.to_string());
         }
-        Ok(format!(
-            "metric,amount\nrevenue,{}\nexpenses,{}\nnet_income,{}\n",
-            money(revenue),
-            money(expenses),
-            money(revenue - expenses)
-        ))
+        let mut csv = String::from("section,code,name,amount\n");
+        for (section, lines) in [("revenue", &pl.revenue), ("expenses", &pl.expenses)] {
+            for l in lines {
+                csv.push_str(&format!(
+                    "{section},{},{},{}\n",
+                    csv_escape(&l.code),
+                    csv_escape(&l.name),
+                    money(l.amount)
+                ));
+            }
+        }
+        csv.push_str(&format!(
+            "total,,revenue,{}\ntotal,,expenses,{}\ntotal,,net_income,{}\n",
+            money(pl.total_revenue),
+            money(pl.total_expenses),
+            money(pl.net_income())
+        ));
+        Ok(csv)
     }
 
     fn export_balance_sheet(&self, format: &str, as_of: Option<&str>) -> Result<String, String> {
         let store = self.lock()?;
-        let ledger = store.ledger();
-        let as_of_d = match as_of {
-            Some(s) => parse_date(s)?,
-            None => chrono::Utc::now().date_naive(),
-        };
-        let mut assets = Decimal::ZERO;
-        let mut liabilities = Decimal::ZERO;
-        let mut equity = Decimal::ZERO;
-        let mut revenue = Decimal::ZERO;
-        let mut expenses = Decimal::ZERO;
-        for a in ledger.chart().all() {
-            if a.placeholder {
-                continue;
-            }
-            let m = movement_through(ledger, a.id, as_of_d);
-            match a.account_type {
-                AccountType::Asset => assets += m,
-                AccountType::Liability => liabilities += m,
-                AccountType::Equity => equity += m,
-                AccountType::Revenue => revenue += m,
-                AccountType::Expense => expenses += m,
-            }
-        }
-        let current_earnings = revenue - expenses;
-        equity += current_earnings;
+        let bs = bs_statement(store.ledger(), as_of)?;
         if format == "json" {
             return serde_json::to_string_pretty(&serde_json::json!({
-                "as_of": as_of_d.to_string(),
-                "assets": money(assets), "liabilities": money(liabilities),
-                "equity": money(equity), "current_earnings": money(current_earnings),
-                "balanced": assets == liabilities + equity,
+                "as_of": bs.as_of.to_string(),
+                "asset_accounts": lines_out(&bs.assets),
+                "liability_accounts": lines_out(&bs.liabilities),
+                "equity_accounts": lines_out(&bs.equity),
+                "assets": money(bs.total_assets), "liabilities": money(bs.total_liabilities),
+                "equity": money(bs.total_equity), "current_earnings": money(bs.current_earnings),
+                "balanced": bs.balanced(),
             }))
             .map_err(|e| e.to_string());
         }
-        Ok(format!(
-            "metric,amount\nassets,{}\nliabilities,{}\nequity,{}\ncurrent_earnings,{}\n",
-            money(assets),
-            money(liabilities),
-            money(equity),
-            money(current_earnings)
-        ))
+        let mut csv = String::from("section,code,name,amount\n");
+        for (section, lines) in [
+            ("assets", &bs.assets),
+            ("liabilities", &bs.liabilities),
+            ("equity", &bs.equity),
+        ] {
+            for l in lines {
+                csv.push_str(&format!(
+                    "{section},{},{},{}\n",
+                    csv_escape(&l.code),
+                    csv_escape(&l.name),
+                    money(l.amount)
+                ));
+            }
+        }
+        csv.push_str(&format!(
+            "equity,,current_earnings,{}\ntotal,,assets,{}\ntotal,,liabilities,{}\ntotal,,equity,{}\n",
+            money(bs.current_earnings),
+            money(bs.total_assets),
+            money(bs.total_liabilities),
+            money(bs.total_equity)
+        ));
+        Ok(csv)
     }
 
     fn export_cash_flow(&self, format: &str, p: &ExportParams) -> Result<String, String> {

crates/ledger-mcp/src/types.rs

@@ -114,6 +114,21 @@ pub struct ProfitAndLossOut {
     pub expenses: String,
     /// Revenue minus expenses, decimal string. Positive is profit.
     pub net_income: String,
+    /// Revenue accounts with movement in the period.
+    pub revenue_accounts: Vec<StatementLineOut>,
+    /// Expense accounts with movement in the period.
+    pub expense_accounts: Vec<StatementLineOut>,
+}
+
+/// One account's line on a statement.
+#[derive(Debug, Serialize, JsonSchema)]
+pub struct StatementLineOut {
+    /// Account code.
+    pub code: String,
+    /// Account name.
+    pub name: String,
+    /// Amount on the account's normal side, decimal string.
+    pub amount: String,
 }
 
 /// Parameters for `books.cash_flow`.
@@ -285,6 +300,12 @@ pub struct BalanceSheetOut {
     pub current_earnings: String,
     /// True when assets equal liabilities plus equity exactly.
     pub balanced: bool,
+    /// Asset accounts with a balance.
+    pub asset_accounts: Vec<StatementLineOut>,
+    /// Liability accounts with a balance.
+    pub liability_accounts: Vec<StatementLineOut>,
+    /// Equity accounts with a balance (current earnings is separate).
+    pub equity_accounts: Vec<StatementLineOut>,
 }
 
 // ---------------------------------------------------------------------------

crates/ledger-mcp/tests/mcp_stdio.rs

@@ -15,10 +15,15 @@ struct Mcp {
 
 impl Mcp {
     fn spawn(data_dir: &std::path::Path) -> Self {
+        Self::spawn_with(data_dir, &[])
+    }
+
+    fn spawn_with(data_dir: &std::path::Path, extra: &[&std::ffi::OsStr]) -> Self {
         let bin = env!("CARGO_BIN_EXE_ledger-mcp");
         let mut child = Command::new(bin)
             .arg("--data-dir")
             .arg(data_dir)
+            .args(extra)
             .stdin(Stdio::piped())
             .stdout(Stdio::piped())
             .stderr(Stdio::null())
@@ -878,3 +883,99 @@ fn mcp_statement_pdfs_and_cpa_package_over_stdio() {
     std::io::Read::read_to_end(&mut zip.by_name("cash-flow.pdf").unwrap(), &mut cf).unwrap();
     assert!(cf.starts_with(b"%PDF"));
 }
+
+#[test]
+fn mcp_period_statements_over_stdio() {
+    let dir = test_dir("period-statements");
+    // A rejected receipt policy would show up as a failed post below: the
+    // toml lowers the threshold from 25.00 to 5.00.
+    let toml = dir.join("wanderbooks.toml");
+    std::fs::write(
+        &toml,
+        "[company]\nname = \"Test Co\"\nfiscal_year_start = \"02-01\"\n[books]\nreceipt_threshold = \"5.00\"\n",
+    )
+    .unwrap();
+    let data = dir.join("books-data");
+    let mut mcp = Mcp::spawn_with(
+        &data,
+        &[std::ffi::OsStr::new("--books-toml"), toml.as_os_str()],
+    );
+    mcp.request(
+        "initialize",
+        json!({
+            "protocolVersion": "2025-06-18",
+            "capabilities": {},
+            "clientInfo": {"name": "smoke-test", "version": "0.1.0"},
+        }),
+    );
+    mcp.notify("notifications/initialized");
+    mcp.call(
+        "books.import_chart_csv",
+        json!({"csv_text": "code,name,type,parent_code\n1000,Cash,asset,\n3000,Capital,equity,\n4000,Sales,revenue,\n6000,Software,expense,\n"}),
+    );
+    let mut post = |mcp: &mut Mcp, date: &str, dr: &str, cr: &str, amount: &str| {
+        let e = mcp.call(
+            "books.draft_entry",
+            json!({"date": date, "description": "x"}),
+        );
+        let id = e["entry_id"].as_u64().unwrap();
+        mcp.call(
+            "books.add_line",
+            json!({"entry_id": id, "account": dr, "side": "debit", "amount": amount}),
+        );
+        mcp.call(
+            "books.add_line",
+            json!({"entry_id": id, "account": cr, "side": "credit", "amount": amount}),
+        );
+        id
+    };
+    let id = post(&mut mcp, "2026-01-02", "1000", "3000", "1000.00");
+    // 1000.00 > 5.00 (the toml threshold): a receipt is required.
+    let err = mcp.call_err(
+        "books.post_entry",
+        json!({"entry_id": id, "confirmed": true}),
+    );
+    assert!(err.contains("5.00"), "{err}");
+    mcp.call(
+        "books.attach_receipt",
+        json!({"entry_id": id, "file_name": "r.pdf", "mime_type": "application/pdf",
+               "content_base64": base64_like(b"r")}),
+    );
+    mcp.call(
+        "books.post_entry",
+        json!({"entry_id": id, "confirmed": true}),
+    );
+    for (date, dr, cr, amt) in [
+        ("2026-01-20", "1000", "4000", "4.00"),
+        ("2026-02-05", "6000", "1000", "3.00"),
+        ("2026-02-09", "1000", "4000", "2.50"),
+    ] {
+        let id = post(&mut mcp, date, dr, cr, amt);
+        mcp.call(
+            "books.post_entry",
+            json!({"entry_id": id, "confirmed": true}),
+        );
+    }
+
+    // February only: 2.50 sales, 3.00 software.
+    let feb = mcp.call(
+        "books.profit_and_loss",
+        json!({"start": "2026-02-01", "end": "2026-02-28"}),
+    );
+    assert_eq!(feb["revenue"], "2.50");
+    assert_eq!(feb["expenses"], "3.00");
+    assert_eq!(feb["net_income"], "-0.50");
+    assert_eq!(feb["expense_accounts"][0]["code"], "6000");
+    assert_eq!(feb["expense_accounts"][0]["amount"], "3.00");
+    // No start: the statement begins at the first entry, not year 1.
+    let all = mcp.call("books.profit_and_loss", json!({"end": "2026-02-28"}));
+    assert_eq!(all["start"], "2026-01-02");
+    assert_eq!(all["revenue"], "6.50");
+
+    // As of Jan 31: cash 1,004.00 = capital 1,000.00 + earnings 4.00.
+    let jan = mcp.call("books.balance_sheet", json!({"as_of": "2026-01-31"}));
+    assert_eq!(jan["assets"], "1004.00");
+    assert_eq!(jan["current_earnings"], "4.00");
+    assert_eq!(jan["equity_accounts"][0]["amount"], "1000.00");
+    assert_eq!(jan["balanced"], true);
+}

crates/ledger-store/src/store.rs

@@ -1981,6 +1981,12 @@ impl Store {
     // Maintenance: verify and rebuild
     // ------------------------------------------------------------------
 
+    /// Sequence number of the last journal line: the exact journal state a
+    /// report reflects. Zero for an empty journal.
+    pub fn journal_seq(&self) -> u64 {
+        self.journal.next_seq() - 1
+    }
+
     /// Verify everything: the journal hash chain, a fresh replay's reports
     /// against the live ledger, and the SQLite projection against the replay.
     /// Loud on any divergence.

docs/mcp-interface.md

@@ -21,6 +21,15 @@ If a behavior can't be expressed through `ledger-core`'s public API, the
 core is missing something — fix the core, don't work around it in the MCP
 layer.
 
+## Company settings
+
+`ledger-mcp` reads the books dir's `wanderbooks.toml` (default: next to
+`--data-dir`; override with `--books-toml PATH`): `[company] name` heads
+every report, `[company] fiscal_year_start` ("MM-DD", default "01-01";
+the year's end is derived, never stored) defines fiscal-year-to-date for the
+CPA package, and `[books] receipt_threshold` sets the receipt policy unless
+`config.json` sets `receipt_policy`.
+
 ## Transports
 
 1. **stdio** (build first). For Claude Code, Claude Desktop, local agents.
@@ -78,8 +87,14 @@ below.
   → entries with lines, newest first. `limit` caps at 100.
 - `books.trial_balance {}` → canonical JSON (same shape as
   `reports::snapshot` trial-balance section).
-- `books.balance_sheet {}` → canonical JSON.
-- `books.profit_and_loss {}` → canonical JSON.
+- `books.balance_sheet { as_of? }` → totals (`assets`, `liabilities`,
+  `equity`, `current_earnings`, `balanced`) plus `asset_accounts`,
+  `liability_accounts`, `equity_accounts` (`{code, name, amount}`), as of
+  the date (default today).
+- `books.profit_and_loss { start?, end?, class? }` → totals plus
+  `revenue_accounts` and `expense_accounts` for the range. `end` defaults to
+  today, `start` to the first posted entry. Closing entries are excluded, so
+  a closed period still shows what it earned.
 - `books.cash_flow { start?, end?, cash_accounts: ["1000"], financing_accounts? }`
   → indirect-method cash flow statement. `cash_accounts` are the reconciling
   accounts (required); the three sections always sum to their net change.

plan/STATUS.md

@@ -170,3 +170,11 @@ interface is MCP, not a cloned GUI. The first storage + MCP slice is done
   requested label; core needs period-scoped statements); P&L and balance
   sheet XLSX are totals-only; PDF amounts don't align (padding in a
   proportional font), no company name, negatives as "-x".
+- 2026-10-11: Every statement export (csv, json, xlsx, pdf, CPA package)
+  now renders core's period statements: the date range and as-of date are
+  real, with a line per account. One layout (`ledger-import::report`:
+  sections, lines, subtotals, totals; exact "(1,234.56)" formatting) feeds
+  every renderer. The server reads `wanderbooks.toml`: company name for
+  report headers, `fiscal_year_start` for fiscal YTD (end derived), and
+  `receipt_threshold` (it was silently ignored before). Reports carry
+  "Prepared from journal through seq N".