Uniswap in Spain: how to declare swaps and liquidity provision on the largest DEX

Uniswap is the largest DEX by volume. Complete tax guide for Spanish users: swaps, LPs, UNI rewards.

Equipo kointax·May 5, 2026·4 min read

Uniswap in Spain: how to declare

Swaps: Each swap = sell token given (capital gain/loss) + buy token received (new acquisition cost). Gas fees = deductible from trade profit.

Uniswap v2 LP: Deposit = deemed sale of deposited tokens; Withdraw = deemed sale of LP tokens.

Uniswap v3: Same as v2 but with price range complexity; LP positions are NFTs.

Historical UNI airdrop (Sep 2020): Capital income at market value when claimed.

kointax auto-imports Uniswap history via wallet address across Ethereum and compatible chains.

declaracrypto.es — FIFO, LIFO, HIFO or WAC method. 80+ compatible exchanges. Excel + PDF report ready for your tax return.

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