IRS Form 8949 Compliance Rewrites: How 1099-DA and 2026 Basis Rules Reshape US Crypto Tax Reporting

In the US, the tax code governing digital assets is undergoing a measured, phased redesign. The central changes orbit around Form 8949—the reconciliation vehicle for capital gains and losses—and the broker reporting regime that now explicitly targets digital assets through Form 1099-DA. For 2025, US brokers generally report digital asset proceeds on 1099-DA, while basis information and more granular reporting move into 2026 under the final regulations. This shift is shaping how traders record, reconcile, and file crypto tax positions on an annual return. Traders should not assume that “crypto taxes” will keep flowing through the old 1099-B habits alone; the new forms and rules are designed to align reporting with digital asset realities on and off exchanges.\n\nAs the IRS clarifies, Form 8949 remains the primary tool for reconciling any amounts not captured by a broker’s reporting, including digital asset transactions reported on 1099-DA. The 2025 Instructions for Form 8949 explicitly include digital assets and show how to reconcile with Forms 1099-B, 1099-DA, or substitutes. The form also directs taxpayers to report digital-asset dispositions on the specific boxes designed for short-term and long-term digital-asset transactions, with a separate Part I for short-term and Part II for long-term gains or losses. This explicit inclusion of digital assets—alongside traditional assets—marks a formal recognition that crypto is property for tax purposes and that its on-chain activity must be folded into return preparation. (irs.gov)

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