Strategy, the publicly traded company led by Michael Saylor, reported a pair of major Bitcoin-related financial impacts this week, showing how large the company’s BTC treasury has become under fair-value accounting rules. In an Oct. 5 filing, Strategy estimated a $4.1 billion income-tax benefit after Bitcoin’s fair value rose above its cost basis as of Sept. 30. The benefit came from a lower estimated tax expense through an accounting adjustment, and the company said it reversed a deferred tax asset related to Bitcoin and released the associated valuation allowance.
Separately, the company reported approximately $21 billion in gains on its Bitcoin holdings for the third quarter of 2026, according to an Oct. 7 summary. That gain reflects the sharp increase in Bitcoin’s value during the three months through September 30, rather than cash profit from selling Bitcoin. Under crypto fair-value accounting rules, eligible digital assets are marked to market, allowing unrealized gains to flow through earnings. This is a major change from earlier accounting treatment, when Bitcoin was generally treated as an intangible asset that required impairment charges in down markets without allowing equivalent unrealized recovery gains.
Strategy disclosed it held about 848,000 BTC at an average purchase price of $75,440.70, including fees and expenses, as of Oct. 4 at 4 p.m. Eastern time. The gains illustrate the company’s rising sensitivity to Bitcoin price movements: relatively modest percentage changes can now translate into multibillion-dollar changes in reported asset values and earnings. The company has continued to accumulate Bitcoin as its primary treasury asset, financing purchases through equity issuance, preferred stock and debt.
The filing also discussed the distinction between corporate Bitcoin holdings, ETF underlying assets and ETF shareholders’ own break-even levels. For comparison, the report noted estimates that the average cost of Bitcoin remaining in BlackRock’s iShares Bitcoin Trust ETF was around $81,188 per BTC as of Oct. 2, while BlackRock’s Oct. 5 filing listed about 806,038 BTC. However, company officials cautioned that fund-level acquisition costs differ from individual shareholder break-even prices because investors buy ETF shares at market prices on different dates.
Strategy’s model can perform strongly during Bitcoin rallies because it combines a very large existing position with continued capital raising and additional purchases. But the same concentration works in reverse. A significant Bitcoin decline would reduce the fair value of the company’s holdings and could create substantial accounting losses, even if no coins are sold. The company must also continue servicing obligations tied to its debt and preferred securities. That makes the Q3 gain both a demonstration of the strategy’s upside and a reminder of its central risk.
