CryptoGainsCalc

Crypto Capital Gains Calculator

Figure out how much you gained or lost on your crypto trades, split into short-term and long-term, using the FIFO (first-in-first-out) method most tax authorities default to. Everything runs in your browser -- nothing you type is sent anywhere.

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Why FIFO?

Most tax authorities, including the US IRS by default, assume you sell your oldest coins first unless you specifically identify which lot you're selling. This calculator matches your sales against your buys in that order, so the numbers line up with what you'd report unless your accountant tells you otherwise. Read more in the crypto tax guide.