Know your crypto gains
before your tax software does
A free FIFO capital gains calculator for crypto. Enter your buys and sells, get short-term vs. long-term gains in seconds -- entirely in your browser.
FIFO, done right
Matches your sales against your oldest buys first, exactly how most tax authorities assume you sell unless you specifically identify a lot.
Short vs. long-term, instantly
See your gains split by holding period the moment you enter your trades -- no spreadsheet, no waiting.
Nothing leaves your browser
No account, no server, no tracking of your figures. Your entries are remembered locally on your own device so you don't lose them -- clear them anytime with one click.
How it works
Three inputs, one clear answer
List your buys
Asset, date, quantity, and price paid for each purchase.
List your sells
Same for every sale, trade, or spend.
Get your breakdown
Short-term and long-term gain/loss, matched lot by lot.
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 tax software or accountant tells you otherwise. Read more in the crypto tax guide, or check unfamiliar terms in the glossary.