Bitcoin's Hidden Tax Trap Exposed: Cost-Basis Blind Spot Worries Investors

A little-known fact about Bitcoin tax reporting has investors confused and worried about their 2026 crypto tax forms. According to experts, withdrawing coins from an exchange, returning them to the same account, and selling them can fall outside mandatory cost-basis reporting. This creates a 'cost-basis blind spot' that investors need to be aware of.

The IRS's Form 1099-DA instructions make it clear that only digital assets acquired after 2025 in a custodial account and held there until disposal are considered 'covered' and subject to mandatory basis reporting. Assets bought before 2026 or transferred into the broker are non-covered, with basis reporting voluntary.

Consider a hypothetical US investment: 0.1 Bitcoin bought for $5,000 in February 2026 and sold for $7,000 in September. Assume one purchase lot, unchanged ownership, no intervening trades, no fees, and no other basis adjustments. The result is the same gain of $2,000 across three different paths:

• Custody route: mandatory basis reporting
• Bought with one broker, transferred to another and sold: non-covered; basis reporting voluntary
• Bought with a broker, withdrawn to an owned wallet, returned and sold: non-covered; basis reporting voluntary