A transaction that calls a blockchain program and may trigger multiple asset movements, fees, or position changes.
One transaction hash can contain several taxable events, and tax software often records only the first token movement it sees. Reconciliation means decoding each interaction into its component transfers, disposals, and income receipts.
Because it decoded one leg of a multi-step interaction and missed the rest. Complex contract calls have to be reconstructed from the transaction hash.
Source: IRS Notice 2014-21
Last reviewed September 18, 2026. Tax rules change; confirm current law before acting.
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