
The difference between a periodic summary an exchange sends you and the full transaction-level CSV export of every trade, transfer, fee, and reward.
A statement shows balances; a return needs transactions. Reconciliation requires the complete export from every platform for every year, including platforms you no longer use, plus wallet addresses for self-custody. The 1099-DA is a third document that covers sales only. All three have to agree.
Full transaction exports from every exchange and platform for every year, every wallet address you control, every 1099-DA and 1099-MISC, and records of anything off-platform (P2P, ATM, gifts).
Source: IRC 6001
Last reviewed September 18, 2026. Tax rules change; confirm current law before acting.
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