swaitsandClaude Opus 5.5
b0a9fd8ad4
The final month takes what the months before leave, spread over its days; a disposed asset stops on its disposal day. A skipped month is caught up in the month the run is made; a reversed run un-posts its month. New schedules spread by day; equal-months schedules must start on the 1st. Amounts round to the currency's own minor unit. Kani and Lean proofs; an exhaustive search over runs, reversals and disposals. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01T3gXMVt7XJPi6ens1or9Dj
135 lines
3.2 KiB
TOML
135 lines
3.2 KiB
TOML
id = "depreciation-disposal-mid-month"
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title = "A disposed asset depreciates through its disposal day, and its schedule stops there"
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rule = "An asset disposed of mid-month is depreciated through the disposal day, held, and its schedule, accumulated depreciation and book value afterwards are what the disposal took."
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status = "CONVENTION"
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sources = ["ASC 360-10-35-4"]
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tags = ["depreciation", "disposal", "mid-month", "p3-defect-22"]
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[setup]
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currency = "USD"
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fiscal_year_start = "01-01"
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basis = "accrual"
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rounding = "half-away-from-zero"
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[[setup.accounts]]
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code = "1000"
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name = "Bank"
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type = "asset"
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[[setup.accounts]]
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code = "1500"
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name = "Equipment"
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type = "asset"
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[[setup.accounts]]
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code = "1510"
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name = "Accumulated Depreciation"
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type = "asset"
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[[setup.accounts]]
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code = "3000"
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name = "Capital"
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type = "equity"
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[[setup.accounts]]
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code = "6200"
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name = "Depreciation Expense"
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type = "expense"
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[[setup.accounts]]
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code = "7100"
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name = "Gain or Loss on Disposal"
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type = "revenue"
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# Asset X: 12,000.00, no salvage, 12 months from 2026-01-01 (1,000.00 a
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# month; December the final month).
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[[setup.assets]]
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id = "X"
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description = "Asset X"
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cost = "12000.00"
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salvage = "0.00"
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life_months = 12
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in_service = "2026-01-01"
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method = "straight_line"
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cost_account = "1500"
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accumulated_account = "1510"
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expense_account = "6200"
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[[events]]
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date = "2026-01-01"
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description = "Capital"
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lines = [
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{ account = "1000", side = "debit", amount = "12000.00" },
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{ account = "3000", side = "credit", amount = "12000.00" },
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]
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[[events]]
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date = "2026-01-01"
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description = "Bought asset X"
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lines = [
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{ account = "1500", side = "debit", amount = "12000.00" },
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{ account = "1000", side = "credit", amount = "12000.00" },
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]
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[[events]]
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run_depreciation = { asset = "X", period = "2026-01" }
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[[events]]
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run_depreciation = { asset = "X", period = "2026-02" }
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[[events]]
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run_depreciation = { asset = "X", period = "2026-03" }
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[[events]]
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run_depreciation = { asset = "X", period = "2026-04" }
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[[events]]
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run_depreciation = { asset = "X", period = "2026-05" }
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# Disposed of 2026-06-15 for 7,000.00.
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[[events]]
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date = "2026-06-15"
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dispose_asset = { asset = "X", proceeds = "7000.00", proceeds_account = "1000", gain_loss_account = "7100" }
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# Hand check (worked without the code): January..May run, 5 x 1,000.00 =
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# 5,000.00. June held through the 15th: 1,000.00 x 15/30 = 500.00, the
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# final depreciation. Accumulated 5,500.00; book value 12,000.00 -
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# 5,500.00 = 6,500.00; gain 7,000.00 - 6,500.00 = 500.00.
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[[expect]]
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query = "disposal"
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asset = "X"
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[expect.values]
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final_depreciation = "500.00"
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catch_up_depreciation = "0.00"
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excess_depreciation = "0.00"
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accumulated = "5500.00"
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book_value = "6500.00"
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gain_loss = "500.00"
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# The disposed asset's schedule ends on the disposal day, whatever date it
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# is asked through.
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[[expect]]
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query = "depreciation_schedule"
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asset = "X"
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as_of = "2030-12-31"
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[expect.values]
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"2026-06" = "500.00"
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accumulated = "5500.00"
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book_value = "6500.00"
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# The books: depreciation expense 5,500.00 (debit), the gain 500.00
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# (credit), accumulated depreciation and equipment cleared, the bank
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# 7,000.00 (debit).
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[[expect]]
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query = "balances"
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as_of = "2026-06-30"
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[expect.values]
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"1000" = "7000.00"
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"1500" = "0.00"
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"1510" = "0.00"
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"6200" = "5500.00"
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"7100" = "500.00"
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