Crypto Investors Face New Reporting Challenge with Form 1099-DA

For tax year 2026, crypto investors will face a new challenge in reporting their digital asset transactions. The Internal Revenue Service (IRS) has introduced Form 1099-DA, which requires brokers to report customer disposition transactions directly to the IRS. This change is part of the broker reporting requirements under IRC Section 6045.

The implementation marks a significant shift in federal tax administration, but it also introduces a structural asymmetry that creates legal and financial exposure for taxpayers. The 'Zero Basis Trap' occurs when brokers report gross proceeds without accompanying basis data, effectively assigning a zero cost basis to the disposition.

For dispositions occurring in 2026 and reported on Forms 1099-DA received in early 2027, brokers must report both gross proceeds and cost basis for covered digital assets acquired on or after January 1, 2026. However, assets purchased before 2026 will remain non-covered, and the asymmetry could persist.

Taxpayers navigating this transitional phase must be aware of their record-keeping burden, as they will need to provide contemporaneous blockchain records and wallet reconciliations to rebut the IRS's math. The Automated Underreporter (AUR) system will match broker filings against taxpayers' returns, proposing additional tax, interest, and penalties under IRC Section 6662.