Bitcoin Treasury — Unrealised Fair Value Loss Through Net Income (ASU 2023-08, US GAAP)
Recording the unrealised fair value decrease on Bitcoin held as a treasury asset under ASU 2023-08 — recognised immediately in net income (no impairment test required, and losses are reversible in future periods).
| Account Name | Type | Debit ($) | Credit ($) |
|---|---|---|---|
| Unrealised Loss on Cryptocurrency (Net Income — P&L) | Expense (+) | 95,000.00 | - |
| Cryptocurrency Asset — Bitcoin (FV Decrease) | Asset (-) | - | 95,000.00 |
💡 Accountant's Note
Under ASU 2023-08, unrealised losses are recognised in net income in the period they occur — identical treatment to unrealised gains. This replaces the old impairment model (where losses were permanent write-downs that could not be reversed). Under the new model: if Bitcoin falls from $60,000 to $55,500 per coin, the $4,500 decline per coin is recognised as a loss in net income. If Bitcoin subsequently recovers to $62,000, the full $6,500 appreciation from the previously impaired level is recognised as a gain — the new model eliminates the irreversible impairment concept. Companies like MicroStrategy (which held massive Bitcoin treasuries) lobbied heavily for this standard because the old model created extreme income statement volatility asymmetry.
Practitioner & Systems Framework
💻 ERP Architecture
The fair value remeasurement is applied to the ENTIRE portfolio balance — not lot by lot. The carrying value of the crypto asset at each period-end is the total fair value (quantity × price at reporting date). The change from prior period carrying value is the unrealised gain or loss. Unlike the impairment model, there is no floor — the carrying value floats with the market price each period. Deferred tax must be considered: as the carrying value changes each period (both up and down), the deferred tax asset or liability also changes. This creates additional income statement volatility from the deferred tax effect on the unrealised mark-to-market.
⚠️ Audit Flags
Under ASU 2023-08, the traditional impairment procedures (lowest intra-period price testing, lot-by-lot analysis) are replaced by straightforward period-end fair value confirmation. Auditors simply confirm: (1) the quantity held at period-end, (2) the Level 1 price at period-end from the principal market, (3) the mathematical gain/loss calculation. The audit becomes simpler for the remeasurement step but adds complexity in the deferred tax calculation (the temporary difference between book FV and the tax cost basis changes every period).
📄 Required Documentation
Quantity of crypto assets held at period-end (from custody platform), principal market price at period-end closing (Level 1 ASC 820), prior period carrying value, unrealised gain/loss calculation, deferred tax calculation on the book/tax temporary difference, and income statement presentation of unrealised gain/loss line item.
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