wanderbooks is a general MCP-first accounting application: every business needs its accounts mapped to where they land on its income tax return, and its CPA needs book-to-tax differences surfaced, not hidden. - ledger_core::tax: a catalog of stable categories (gross_receipts, commissions_fees, meals, guaranteed_payments, officer_compensation, nondeductible, ...) with kind (income, cost of goods, deduction), the returns each appears on (Schedule C, 1065, 1120-S, 1120), a default deductible percent (meals 50, nondeductible 0), and guidance. Keys, not line numbers: form lines move from year to year. - Accounts carry tax_category and an optional deductible_percent override, validated against the account type (and the return, at the MCP layer), journaled as account.tax_set, replayed, projected (schema v6). - tax_summary(start, end, form): the P&L grouped by category, book and deductible amounts (half away from zero to the cent), contra income (refunds) reducing receipts, and every account still uncategorized. - MCP: books.tax_categories (filtered to the configured return), books.set_tax_category, a tax_summary report in every format and in the CPA package, chart output with categories, and a fifth tax_category column in chart CSV imports, validated before anything is created. [company] tax_form, or derived from tax_classification. Scope stays book basis: no tax depreciation, basis, or filing. Tests: a hand-computed quarter (50% meals 333.33 -> 166.67, penalties at 0%, refunds as negative receipts, guaranteed payments, one uncategorized account; book net 5,276.67 vs tax 5,483.33); overrides; category/account /return validation; form parsing and derivation; CSV parsing; stdio: filtered catalog, mapping, refusal, summary, all-or-nothing import. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MtYEaR6M6Ybdhm6X98BWNu
4.1 KiB
Parity catalog
Every semantic feature we intend to clone, with its status. Updated in the
same commit as the feature. The floor never decreases: the count of
done items is monotonic across commits.
Statuses: done = implemented + invariant-tested + golden-covered.
partial = implemented but missing tests or goldens. todo = not started.
No other statuses.
Floor: 10 done (2026-10-10; fixed-asset register added).
| Area | GnuCash reference | Status | Notes |
|---|---|---|---|
| Chart of accounts (5 types, codes, hierarchy) | Accounts tab | done | account.rs; placeholder support in |
| Double-entry validation (balanced, ≥2 lines) | Journal validation | done | journal.rs::validate |
| Exact decimal money, no floats | — (we go further) | done | money.rs; Currency ISO codes |
| Posted-entry immutability | Read-only posted txns | done | reversal via reverse_entry |
| Trial balance | Reports → Trial Balance | done | golden-covered |
| Balance sheet (A = L + E) | Reports → Balance Sheet | done | current earnings folded in pre-close; golden-covered |
| Profit & loss | Reports → Income Statement | done | golden-covered |
| P&L for a date range, line per account (closing entries excluded) | Reports → Income Statement (custom dates) | partial | hand-verified fixture + property tests; no golden file yet |
| Balance sheet as of a date, line per account | Reports → Balance Sheet (as of) | partial | hand-verified fixture + property tests; no golden file yet |
| General ledger by account (running balance, split) | Reports → General Ledger | partial | hand-verified fixture, ties to trial balance; no golden file yet |
| Trial balance as of a date | Reports → Trial Balance (as of) | partial | hand-verified fixture; no golden file yet |
| Statement of changes in members' equity | Reports → Statement of Changes in Equity | partial | hand-verified two-member fixture incl. rounding and a close; no golden file yet |
| Tax line mapping + tax summary | Accounts → Tax line mapping; Tax reports | partial | hand-verified fixture (50% meals, nondeductible, contra income); no golden file yet |
| Reversing entries | Reverse transaction | done | linked via reversal_of |
| Canonical report snapshots (JSON) | — (our oracle format) | done | reports::snapshot |
| Fixed-asset register + straight-line depreciation | Fixed Asset register | done | assets.rs; golden-covered schedule; idempotent runs; disposal with gain/loss |
| Cash flow statement (indirect) | Reports → Cash Flow | done | R-FUTURE-3 |
| Period close / retained earnings | Close books | todo | R-FUTURE-2 |
| Foreign-currency lines (base + foreign stored) | Multi-currency accts | done | R-FUTURE-1 |
| Period close (closing entry to Retained Earnings) | Close books | done | R-FUTURE-2 |
| Bank reconciliation (cleared flags + report) | Reconcile | done | — |
| QuickBooks CSV import (bank txns, chart of accounts) | Banking → Upload | done | R-FUTURE-4 |
| QuickBooks IIF + XLSX export | Export / reports | done | R-FUTURE-4 |
| A/R invoices + payments + aging | Business → Invoices | done | R-FUTURE-5 |
| A/P bills + payments + aging | Business → Bills | done | R-FUTURE-5 |
| Payroll runs (accounting only, no tax tables) + tax remittance | Payroll | done | — |
| Tracking classes (divisional P&L) | Class tracking | done | — |
| CPA handoff package (TB + GL xlsx, P&L + BS pdf, zip) | Reports → export | done | — |
| Budgets | Budgets | todo | R-FUTURE-6 (declined as bloat) |
| Scheduled transactions | Scheduled txns | todo | R-FUTURE-6 |
| Automated GnuCash diff harness | — (our xtask oracle) |
todo | roadmap phase 3 |
Workflow/UI parity (QuickBooks/Xero reference) gets its own catalog when the egui phase starts; semantics come first.
Capability parity (AI-first phase)
Semantic parity (above) is about correctness: the engine computes the
right numbers. Capability parity is about usefulness: can the new system
do everything the GSheet+GDrive system does today? Tracked separately in
docs/capability-parity.md, with its own cutover rule (parallel run +
Stephen's approval). The two catalogs converge: when both are green, the
sheet retires.