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Failed blockchain transaction

An attempted blockchain operation that does not complete successfully. An included transaction may still consume gas even when its state changes revert.

What is Failed blockchain transaction?

An attempted blockchain operation that does not complete successfully. An included transaction may still consume gas even when its state changes revert.

Why it matters on your return

A failed transaction moves no assets, so there is no disposal of the asset you tried to trade. The gas consumed is still spent: for an investor it is a small disposal of the fee token with no corresponding acquisition, generally a loss equal to the fee's basis less nothing.

Example

You attempt a swap that reverts and pay 0.005 ETH in gas. No swap occurred. The 0.005 ETH is disposed of for no proceeds; the loss is the basis of that fraction of ETH.

Can I deduct gas on a failed transaction?

Not as an expense for an investor. The fee is a disposal of the gas token for nothing, which realizes a small loss equal to its basis.

Source: No IRS guidance as of September 2026; IRS Notice 2014-21 (property treatment)

Last reviewed September 18, 2026. Tax rules change; confirm current law before acting.

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