Trading fees that change with market conditions or programmed rules instead of remaining at a fixed pool rate.
For a trader, the fee is part of the swap: it reduces proceeds on the token given up or adds to basis of the token received, whichever way it is charged. For a liquidity provider, variable fees are income as they become claimable.
Not separately. They reduce proceeds or increase basis on the specific trade, which lowers gain the same way.
Source: IRS FAQ on virtual currency transactions (fees)
Last reviewed September 18, 2026. Tax rules change; confirm current law before acting.
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