BLOG ARTICLE
Same Asset, Different Tax Bill: Corporate AMT and Digital Assets on the Balance Sheet
Adapted from an analysis by Kriti Bansal, VP of Finance & Accounting at Alphapoint, originally published in Tax Notes.
In August 2025, Strategy Inc. told investors it expected to owe corporate alternative minimum tax in 2026. Not on anything it had sold, but on paper gains in its bitcoin holdings. However, less than two months later, the company reversed that expectation. The holdings themselves remained unchanged; what shifted was a key piece of interim Treasury guidance that allowed the company to exclude those unrealized gains from its calculations.
While that looked like the end of the story, the mechanics underneath it suggest the story is just getting started, and they matter to any institution carrying digital assets on its balance sheet.
How an accounting change became a tax base
For years, companies held crypto at cost and wrote it down when it fell, so appreciation stayed invisible until a sale. However, this practice changed with a new accounting standard issued in 2023 . Starting with fiscal years that began after December 15, 2024, in-scope crypto assets are measured at fair value, with changes running through net income.
This change is significant even though the tax code doesn't explicitly mention it. The Corporate Alternative Minimum Tax (AMT), set at 15 percent, bases its calculations on the net income reported by companies. As unrealized gains are recognized in net income, they become part of the tax base, turning a mere accounting adjustment into a significant tax implication.
The reach is wider than the headline number suggests. A standalone company becomes subject to the tax once its average annual adjusted financial statement income (AFSI) crosses $1 billion. But a U.S. member of a foreign-parented group is tested at its own level, at $100 million, once the group as a whole clears $1 billion. Consequently, a mid-size subsidiary with a sizable treasury position can be swept in on the member-level test while the group headline draws all the attention.
The election is a bet, not a fix
IRS Notice 2025-49 created an option to disregard certain fair value adjustments when calculating AFSI (Adjusted Financial Statement Income), a move that Strategy intended to leverage.
It's important to note that this option defers rather than forgives. The amounts set aside are brought back into AFSI, generally in a single year, when the asset is disposed of, or the company exits the option. For a holder with a large embedded gain and no plan to sell, that can feel close to an exemption. However, for one that transacts, it isn't, and the year it exits is the year the whole deferred amount arrives.
This approach is all-or-nothing and has implications in both directions. The option generally has to be applied consistently across eligible fair value items, not just the crypto position. It also disregards unrealized losses on the same terms as gains, so in a down year the company gives up the write-down it would otherwise have taken.
Additionally, it expires on an event the company doesn't control. The option runs until Treasury publishes its forthcoming proposed regulations, a date that has already slipped from late 2026 toward early 2027. Whether that publication by itself triggers the catch-up inclusion is a question the guidance leaves open.
Put together, the election is better understood as a multiyear position on volatility, taken in advance by a tax department, that doesn't reverse when the market does.
The same asset can produce a different answer
Here is the part that complicates diligence, where the outcome depends on which financial statement drives the tax base. U.S. members of foreign-parented groups use the parent's consolidated statement, and when that parent reports under IFRS rather than U.S. GAAP, unrealized appreciation on a digital asset holding generally never reaches profit or loss in the first place. The gain that creates the problem for a U.S. GAAP filer was never in income, so there is nothing for the election to operate on. (Entities that qualify as broker-traders are the exception, as their crypto holdings may be measured at fair value through profit or loss.)
The result is that two companies can hold identical assets at identical prices, report identical GAAP net income, and still show different effective tax rates. Sometimes because one made the election and the other didn't. Sometimes because of the standard-setter a foreign parent answers to.
What this means for treasury and finance teams
The current landscape is unsettled, resting on interim guidance, with no proposed or final regulations behind it yet, and on an option that expires when those regulations appear. Any position taken now is a position taken in reliance on a notice, and it should be documented that way.
That is the real signal for institutions putting digital assets to work. The exposure turns on which entity is tested, which statement drives the number, whether an election was filed and when it takes effect, and whether the records exist to support the position if an examiner asks. Tax, accounting, and treasury end up in the same conversation, and the quality of the answer depends on the quality of the underlying record.
This is where treasury infrastructure earns its place. Alphapoint Treasury doesn't answer the tax questions; those belong to a company's own advisors. What it provides is the operational foundation a defensible position rests on: policy-driven controls, role-based permissions and multi-user approvals, audit logging, and reporting across stablecoin inflows and outflows. When finance needs to reconstruct what moved, when, and who authorized it, that trail is where the work starts.
While the AMT episode is a bitcoin story, the overall lesson generalizes. As stablecoins move into day-to-day treasury operations, the hard part is no longer connecting to a blockchain. Rather, it's about managing on-chain value with the governance, visibility, and control that institutional finance expects, and being able to show your work afterward.
Frequently asked questions
What is the corporate alternative minimum tax (CAMT)?
A 15 percent minimum tax on large corporations, introduced by the Inflation Reduction Act of 2022. It is calculated on adjusted financial statement income rather than on regular taxable income, which is why an accounting change can move it.
What is adjusted financial statement income (AFSI)?
AFSI serves as the foundational base for the corporate AMT. It starts with the net income a company reports on its financial statements and applies a set of specified adjustments. Since it begins with book income, items that never trigger regular tax, like unrealized gains, can still land in it.
What is ASU 2023-08?
The 2023 accounting standard that requires in-scope crypto assets to be measured at fair value, with changes running through net income, for fiscal years beginning after December 15, 2024. It replaced the older cost-less-impairment model, under which appreciation stayed invisible until sale.
Why do U.S. GAAP and IFRS produce different outcomes?
Under U.S. GAAP, unrealized appreciation on in-scope crypto assets now flows through net income and can enter AFSI. Under IFRS, that appreciation generally does not reach profit or loss in the same way for a non-broker-trader holder. Two companies holding the same asset can therefore end up with different CAMT outcomes depending on the financial statement framework that drives AFSI.
Does any of this apply to stablecoins?
The CAMT issue discussed here is most pronounced for volatile digital assets such as bitcoin, where large unrealized gains can accumulate. Stablecoins are designed to maintain a stable value, so the same fair value swings are generally less significant. Their accounting and tax treatment still depends on the specific asset and circumstances. The broader lesson remains the same: once digital assets sit on the balance sheet, tax, accounting, and treasury need a reliable underlying record.
