Bitcoin Treasury — Unrealised Fair Value Gain Through Net Income (ASU 2023-08, US GAAP)
Recording the unrealised fair value increase on Bitcoin held as a treasury asset under ASU 2023-08 (effective for fiscal years beginning after December 15, 2024) — with ALL changes in fair value flowing through net income, not OCI.
| Account Name | Type | Debit ($) | Credit ($) |
|---|---|---|---|
| Cryptocurrency Asset — Bitcoin (FV Increase) | Asset (+) | 180,000.00 | - |
| Unrealised Gain on Cryptocurrency (Net Income — P&L) | Revenue (+) | - | 180,000.00 |
💡 Accountant's Note
ASU 2023-08 (Accounting for and Disclosure of Crypto Assets, effective January 2025 for calendar-year public companies) fundamentally changes US GAAP for in-scope crypto assets. The old model required impairment-only recognition (losses immediately, gains only on sale). The new model requires FAIR VALUE THROUGH NET INCOME — both unrealised gains AND unrealised losses are recognised in net income every reporting period. In-scope assets: fungible crypto assets listed on recognised exchanges (Bitcoin, Ethereum) that are not securities, do not grant the holder specific rights, and are held by a non-investment company. Tesla, MicroStrategy, and corporate Bitcoin treasury holders are directly affected. This eliminates the asymmetry of the old model (where companies could only recognise downside losses but had to wait for disposal to recognise upside gains).
Practitioner & Systems Framework
💻 ERP Architecture
Under ASU 2023-08, the crypto asset account is remeasured to fair value at every reporting date (quarterly for public companies, annually for private). The fair value is the principal market price (typically the exchange where the company most often trades) or the most advantageous market price under ASC 820. The gain or loss flows to a new income statement line item ('unrealised gain/loss on crypto assets') — not OCI. The old impairment model entries must be reversed on adoption (the cumulative-effect adjustment is recognised in retained earnings on the adoption date). Lot-level cost tracking is no longer needed for remeasurement (but remains needed for tax purposes, since tax still uses a realization model).
⚠️ Audit Flags
Auditors verify the fair value source is a Level 1 input (quoted price in an active market) — for Bitcoin and Ethereum, this is straightforward from Coinbase, Kraken, or similar exchanges. The 'principal market' determination must be documented — the market where the company most frequently transacts or where the highest volume occurs. For the adoption period, auditors test the cumulative-effect adjustment to retained earnings is correctly calculated (difference between FV at adoption and prior carrying cost). The FASB's ASU 2023-08 does NOT apply to wrapped tokens, LP tokens, NFTs, or crypto with embedded rights — those assets are out of scope and continue under prior GAAP.
📄 Required Documentation
ASU 2023-08 scope assessment (confirming in-scope vs. out-of-scope assets), principal market documentation (exchange selection), fair value at each reporting date (from principal market, Level 1 ASC 820), cumulative-effect adoption adjustment calculation, unrealised gain/loss roll-forward by asset, updated accounting policy memo (ASU 2023-08 adoption).
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