Bitcoin accounting under US GAAP changed fundamentally with ASU 2023-08. Before it, companies used an impairment-only model: Bitcoin was carried at cost, written down whenever its price fell, and never written back up until sold. Now in-scope holdings are measured at fair value, with gains and losses recognised in net income each period.
This article compares the two models, explains why the change was made, and sets out what finance teams should do about it.
The old model: indefinite-lived intangible
US GAAP had no specific rules for Bitcoin before December 2023. Bitcoin is not cash, not a financial instrument and not inventory for most holders. By elimination, it was treated as an indefinite-lived intangible asset under ASC 350.
That classification had clear consequences:
- Initial recognition at cost. Bitcoin was recorded at the price paid.
- Impairment testing. If the fair value fell below carrying value at any time during the period, an impairment loss was recorded. Many companies tested against the lowest observed price in the period, because Bitcoin trades continuously.
- No reversals. Once written down, the new lower value became the cost basis. Recoveries were not recognised.
- Gains only on sale. Any increase in value appeared in the accounts only when the Bitcoin was sold.
Why the old model frustrated finance teams
The impairment model produced numbers that were hard to explain and hard to use.
A company that bought Bitcoin and held it through a volatile year could report large impairment losses, even if the price ended the year higher than where it started. The balance sheet showed a value below what the asset could be sold for. Investors had to look to the notes, or to management commentary, to understand the real position.
There was also an operational burden. Tracking the lowest price for each lot across each reporting period required systems and controls that many companies did not have. Preparers, auditors and investors asked the FASB for a better answer, and the standard-setter responded with a dedicated project.
The new model: fair value through net income
The FASB standard on digital assets (ASU 2023-08) applies to fiscal years beginning after 15 December 2024, with early adoption permitted. Under it:
- In-scope holdings are measured at fair value at each reporting date.
- Changes in fair value are recognised in net income.
- Holdings are presented separately from other intangible assets on the balance sheet.
- Remeasurement gains and losses are presented separately in the income statement.
- New disclosures cover significant holdings, cost basis, restrictions and an annual roll-forward.
We explain the standard in full in ASU 2023-08: fair value accounting for Bitcoin explained.
Side-by-side comparison
| Feature | Impairment model (before) | Fair value model (ASU 2023-08) |
|---|---|---|
| Measurement | Cost less impairment | Fair value at each reporting date |
| Price falls | Impairment loss in net income | Loss in net income |
| Price recovers | No write-up | Gain in net income |
| Balance sheet value | Lowest value since acquisition | Current market value |
| Earnings volatility | One-directional losses | Two-directional gains and losses |
| Presentation | Within intangible assets | Separate line items |
| Disclosures | General intangible disclosures | Specific holdings, cost basis, restrictions, roll-forward |
What the change means in practice
Earnings will move with the price
Fair value accounting makes earnings more volatile in both directions. For a company with a material Bitcoin position, quarterly results may be driven more by the Bitcoin price than by operating performance. Management commentary needs to separate the two.
The transition is a one-off adjustment
On adoption, companies remeasure in-scope holdings to fair value. The difference between carrying value and fair value is recorded as a cumulative-effect adjustment to opening retained earnings. It does not go through the income statement in the year of adoption.
For a company that impaired its holdings heavily under the old model, this adjustment can be significant. It depends on accurate records of what was bought, when, and what was impaired.
CFO tip: rebuild your lot-level history before adoption, not during the year-end audit. Reconcile every unit held to the custodian's records and to the general ledger, and document the pricing source and cut-off time you will use.
Deferred tax may change
Where tax is charged on realised gains, fair value accounting creates a gap between book value and tax base. That gap may require deferred tax to be recognised. The tax position depends entirely on the jurisdiction. See how Bitcoin is taxed for companies for the general principles.
Covenants and incentive plans
Check whether loan agreements, incentive schemes or dividend policies refer to net income or equity. Fair value gains and losses can affect those measures in ways that were not anticipated when they were drafted.
What about companies reporting under IFRS?
ASU 2023-08 is a US GAAP standard. It does not apply to companies reporting under IFRS. Under IFRS, Bitcoin is generally accounted for as an intangible asset under IAS 38, or as inventory under IAS 2 where it is held for sale in the ordinary course of business. Fair value through profit or loss is not generally available for most corporate holders.
The difference matters for groups that report under both frameworks, or that compare themselves with peers. See how Bitcoin is accounted for under IFRS for the detail.
Practical checklist for the transition
- Confirm which holdings fall within scope.
- Rebuild or verify lot-level acquisition records.
- Agree the principal market, pricing source and cut-off time with your auditor.
- Calculate the cumulative-effect adjustment.
- Update accounting policies and disclosure templates.
- Review deferred tax implications with your tax adviser.
- Brief the board and audit committee on the effect on earnings.
Our audit readiness checklist covers the controls side in more depth. Companies should take their own accounting, tax and legal advice on their specific position.
How The Bitcoin World helps
We help finance teams prepare for the accounting of a Bitcoin position, from record-keeping design to board papers that explain the earnings effect clearly. We work alongside your auditors and advisers. Execution and custody are carried out by licensed third-party institutions. Learn more about our corporate treasury and board advisory work.