Does this calculate my tax owed?

No — capital gains tax treatment for crypto varies by country and by how long you held the asset (short-term vs. long-term rates in the US, for example). Consult a tax professional.

Why do I need to enter fees separately for buying and selling?

Many exchanges charge a fee on every trade, so a round-trip (buy then sell) pays the fee twice — entering both lets the calculator net out the true cost accurately.

What if I sold at a loss?

The calculator shows a negative profit as a 'realized loss' — capital losses can often offset capital gains for tax purposes, subject to your jurisdiction's rules.

Does this work for any cryptocurrency, not just Bitcoin?

Yes — enter the actual prices and quantity for whichever asset you traded; the math is currency-agnostic.

Is there a live price feed?

No — enter your own actual buy and sell prices from your exchange history.

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Finance

Crypto Profit/Loss Calculator

Realized gain or loss on a crypto trade, after buy- and sell-side exchange fees.

🔒 Runs entirely in your browser — nothing here is ever uploaded

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Last reviewed 2026-08-30

About the Crypto Profit/Loss Calculator

Calculates realized profit or loss on a completed crypto trade — buy price and quantity against sell price, with exchange fees on both the buy and sell side netted in before comparing cost basis to proceeds.

100% Free Runs in Your Browser No Sign-Up Required

How to use it

Enter the price you bought at and the quantity.
Enter the price you sold at.
Enter the exchange fee percentage charged on each side of the trade.
Read your realized profit or loss and return on cost basis.

Formula

Cost basis = (buy price × quantity) + buy-side fee, where buy-side fee = (buy price × quantity) × buy fee %. Net proceeds = (sell price × quantity) − sell-side fee, where sell-side fee = (sell price × quantity) × sell fee %. Profit/loss = net proceeds − cost basis. Return % = profit ÷ cost basis × 100.

Worked example

Buying 0.5 BTC at $40,000 (0.5% fee) costs $20,100 including the fee. Selling that 0.5 BTC at $50,000 (0.5% fee) nets $24,875 after the fee. Profit: $4,775, a 23.76% return on the $20,100 cost basis.

Interpreting your result

This calculates a single realized trade only — a full-position close where buy quantity equals sell quantity. It doesn't track cost-basis lots across multiple partial buys/sells (real portfolios often use FIFO, LIFO, or specific-lot identification, which can each produce a different taxable gain from the same trades), doesn't compute any tax owed (short- vs. long-term capital gains treatment varies by country and holding period), and has no live price feed. Not tax or financial advice.

Recommendations

• Always include the exchange fee on both legs — ignoring fees can meaningfully overstate your real return, especially on smaller trades where the fee is a bigger share of the total.
• This tool assumes you're closing the entire position bought — for a partial sell, run the numbers using only the quantity actually sold, not your full holding.
• Keep your own trade records (date, price, quantity, fees) for tax reporting — this calculator doesn't save or export anything.

Frequently asked questions

No — it assumes a single buy lot and a single matching sell of the same quantity. If you've bought at different prices across multiple purchases, your real taxable gain depends on which cost-basis method you (or your tax jurisdiction) use.