The Short Answer: Fair Value Under ASU 2023-08
A US company that holds bitcoin measures it at fair value at each balance sheet date and runs the change through net income. That is the core of Accounting Standards Update 2023-08, issued by the Financial Accounting Standards Board in December 2023, which created Subtopic 350-60 of the FASB's codification specifically for crypto assets.
That change ended a years-long mismatch between how bitcoin behaves and how financial statements described it. Bitcoin trades continuously on global markets with observable prices, yet until ASU 2023-08 took effect, US GAAP required companies to carry it at historical cost minus impairment, an approach designed for assets like trademarks that have no quoted price at all. Understanding why the change matters requires a look at the model it replaced.
The Old Model: Intangible Assets and One-Way Impairment
Before ASU 2023-08, bitcoin fell into US GAAP's residual category: an indefinite-lived intangible asset under the general intangibles guidance. A company recorded bitcoin at cost. If the price later fell below carrying value, even briefly within a quarter, the company recognized an impairment loss and wrote the asset down to the lower value. If the price then recovered, nothing happened on the books. Write-downs were permanent; write-ups were prohibited until sale.
The result was systematic understatement. A company that bought bitcoin and held it through a full market cycle could show cumulative impairment losses on an asset whose market value had multiplied. Reported earnings captured every drawdown and no recovery, and investors who wanted the real picture had to reconstruct it from supplemental disclosures. Corporate holders petitioned the FASB for a fair-value model on exactly these grounds, and the FASB cited the improved decision-usefulness of fair value when it issued the new standard.
What ASU 2023-08 Covers
The standard applies to crypto assets that meet all six scope criteria: the asset meets the US GAAP definition of an intangible asset; it does not give the holder enforceable rights to underlying goods, services, or other assets; it is created or resides on a distributed ledger based on blockchain or similar technology; it is secured through cryptography; it is fungible; and it is not created or issued by the reporting entity or its related parties.
Bitcoin satisfies all six. Non-fungible tokens fail the fungibility test, and stablecoins or wrapped assets that carry claims on underlying assets may fail the enforceable-rights test, so the standard's scope is narrower than the phrase "digital assets" suggests. A treasury holding bitcoin applies Subtopic 350-60; a company holding other instruments needs an asset-by-asset analysis.
How Fair Value Flows Through the Statements
At each reporting date, the company remeasures its bitcoin at fair value under the existing fair-value measurement framework, using quoted prices in the principal market. The gain or loss for the period lands in net income, not in other comprehensive income. Presentation is explicit on both statements: crypto assets measured at fair value appear separately from other intangible assets on the balance sheet, and the fair-value changes appear separately in the income statement.
For a treasury with a material position, fair-value remeasurement through net income makes reported earnings a function of bitcoin's price. A quarter in which bitcoin rises sharply produces a large unrealized gain in net income; a drawdown produces the mirror image. Neither says anything about the operating business, which is why analysts covering bitcoin-holding companies typically separate operating results from treasury remeasurement. The price swings themselves are a structural feature of the asset, examined in Why Is Bitcoin So Volatile?, and a board adopting a treasury position should expect them in the income statement from the first reporting period onward.
Disclosure Requirements
ASU 2023-08 added disclosures that give investors a view of holdings and activity:
- For each significant holding: the asset's name, cost basis, fair value, and number of units held, with aggregate figures for holdings that are not individually significant.
- Any contractual restrictions on sale, the nature of the restriction, and when it lapses.
- An annual rollforward of activity: additions, dispositions, gains, and losses for the period.
- For dispositions, the difference between sale price and cost basis, and the method used to determine cost basis.
The standard's interim requirements carry the holdings disclosures into quarterly reporting. In practice, a public bitcoin holder now reports how many units it holds, what it paid in aggregate, what the position is worth, and how the position changed during the year. Some holders go further than the standard requires and publish on-chain attestations; What Is Proof of Reserves? covers how those work and how they differ from audited financial statements.
Effective Date and Transition
The standard is effective for fiscal years beginning after December 15, 2024, including interim periods within those fiscal years, which means calendar-year companies applied it from fiscal 2025. Early adoption was permitted for periods whose financial statements had not yet been issued. Transition runs through a cumulative-effect adjustment: the company remeasures its holdings to fair value as of the beginning of the adoption year and records the difference in opening retained earnings, rather than restating prior periods.
Tax Treatment Is a Separate Question
Book accounting and tax accounting answer different questions, and conflating them is the most common error in discussions of corporate bitcoin. For US federal tax purposes, the IRS treats bitcoin as property under Notice 2014-21. Property treatment means tax consequences generally arise on realization: when the company sells bitcoin, exchanges it, or uses it to pay for goods or services, it recognizes gain or loss measured against its tax basis. An unrealized fair-value gain in the financial statements is book income, not taxable income, so fair-value accounting creates book-tax differences and the deferred tax assets and liabilities that come with them. The IRS maintains a general overview of digital asset tax obligations on its digital assets page.
One interaction deserves a flag for large holders. The corporate alternative minimum tax (CAMT) applies a 15 percent minimum rate to the adjusted financial statement income of very large corporations, which raised the question of whether unrealized book gains on bitcoin could become currently taxable. In September 2025, the IRS issued interim guidance in Notice 2025-49 permitting taxpayers to adjust that income measure to disregard unrealized gains and losses on digital assets, pending revised regulations. Companies near the CAMT threshold should track the final rulemaking with their tax advisors rather than rely on a summary.
IFRS: A Different Framework Outside the US
Companies reporting under IFRS do not apply ASU 2023-08. The IFRS Interpretations Committee addressed cryptocurrency holdings in a June 2019 agenda decision, concluding that they generally meet the definition of an intangible asset under IAS 38, unless the entity holds them for sale in the ordinary course of business, in which case IAS 2's inventory guidance applies.
IAS 38 offers two measurement paths. The cost model resembles the old US approach: cost less impairment. The revaluation model permits carrying the asset at fair value where an active market exists, but with an asymmetry: revaluation increases generally go to other comprehensive income rather than profit or loss, while decreases below cost hit profit or loss. An IFRS filer holding bitcoin may therefore show a different earnings pattern than a US GAAP filer with identical holdings. Treatment can also vary with the holder's business model and jurisdictional interpretation, so IFRS filers should treat this section as orientation rather than a conclusion.
What This Means for a Bitcoin Balance Sheet
For a finance team evaluating or operating a corporate bitcoin position, the accounting reality reduces to a few planning points. Fair-value measurement means the balance sheet now reflects what the bitcoin is worth, denominated down to individual sats in the unit count disclosures, and the income statement will swing with the market. Disclosure requirements mean the position is fully visible to investors each quarter, so an investor communication plan belongs in place before the first purchase. Tax basis tracking is a separate workstream from book reporting, with lot-level records needed for dispositions.
Accounting is one of five pillars of a complete treasury program, alongside acquisition, custody, governance, and disclosure; the full framework is laid out in What Is a Bitcoin Treasury Strategy? Companies weighing direct holdings against fund exposure should note that the accounting differs too, a comparison covered in Bitcoin ETF vs Direct Ownership. And because audited statements depend on demonstrable control of the asset, custody architecture, from cold storage design to role-separated authorization, feeds directly into the audit trail; How Do Businesses and Institutions Take Custody of Bitcoin? covers that layer.
This article is educational. It is not accounting, tax, or legal advice, and reporting decisions for any specific company belong with its auditors and advisors, working from the primary texts linked above.
Frequently Asked Questions
How is bitcoin accounted for under US GAAP?
Under FASB ASU 2023-08, companies measure qualifying crypto assets, including bitcoin, at fair value each reporting period, with changes recognized in net income. Holdings are presented separately from other intangible assets on the balance sheet, and fair-value changes appear separately in the income statement.
What did FASB ASU 2023-08 change?
ASU 2023-08 replaced the cost-less-impairment model, under which bitcoin could be written down but never written back up, with fair-value measurement through net income. It also added disclosure requirements: significant holdings by name with cost basis, fair value, and units, an annual rollforward of activity, and any contractual sale restrictions.
When did the new bitcoin accounting rules take effect?
ASU 2023-08 is effective for fiscal years beginning after December 15, 2024, including interim periods within those years. For calendar-year companies, that means fiscal 2025. Early adoption was permitted, and adopters apply a cumulative-effect adjustment to retained earnings at the start of the adoption year.
Is bitcoin taxed the same way it is accounted for?
No. Book accounting and tax treatment are separate systems. The IRS treats bitcoin as property under Notice 2014-21, so tax consequences generally arise on sale or exchange, not on unrealized fair-value changes. Fair-value gains in financial statements are therefore book income that may not be currently taxable, creating deferred tax items.
How is bitcoin treated under IFRS?
The IFRS Interpretations Committee concluded in June 2019 that cryptocurrency holdings generally fall under IAS 38 as intangible assets, or IAS 2 when held for sale in the ordinary course of business. IAS 38 allows a cost model or, where an active market exists, a revaluation model with most gains recorded in other comprehensive income.