Calculating cryptocurrency profit and loss (P&L) requires accounting for all costs involved in a trade: purchase price, sale price, transaction fees on both sides, and tax implications. Missing any of these makes your profit appear higher than it actually is.
The basic P&L formula: Profit = (Sell Price × Number of Coins) − (Buy Price × Number of Coins) − Fees. ROI% = (Profit ÷ Total Cost) × 100. A 100% ROI means you doubled your money. A −50% ROI means you lost half.
Exchange fees matter more than most traders realize. A 0.1% fee on both buy and sell (common on Binance) costs 0.2% round-trip. A 0.5% fee on each side (common on Coinbase) costs 1% round-trip. On a $10,000 trade, the difference is $20 vs $100 in fees — significant over many trades.
US tax treatment: The IRS classifies cryptocurrency as property. This means every trade, sale, or crypto-to-crypto exchange is a taxable event. Short-term gains (assets held under 1 year) are taxed as ordinary income at your marginal rate (10–37%). Long-term gains (held over 1 year) are taxed at preferential capital gains rates (0%, 15%, or 20% based on income). Receiving crypto as income (mining, staking, work payments) is taxed at ordinary income rates at fair market value when received.
Tracking tools for crypto taxes: Koinly, CoinTracker, TaxBit, and CryptoTrader.Tax can automatically import your transaction history from major exchanges and generate tax reports. Manual tracking in a spreadsheet works for low-volume traders.
Investment caution: Cryptocurrency is highly volatile. Bitcoin has experienced multiple 70–85% drawdowns from peak to trough. Never invest more than you can afford to lose entirely, and treat crypto as a high-risk allocation within a diversified portfolio.
Total profit accounts for both buy-side and sell-side exchange fees, which reduce your effective profit. ROI = (Profit ÷ Total Cost) × 100. After-tax profit subtracts capital gains tax from the gross profit.
$1,000 investment · BTC at $30K buy · $50K sell · 0.1% fees
Profit = $664 · ROI = +66.4% · 1.67× multiplier
$5,000 in ETH at $1,500 · Sell at $2,500 · 0.25% fees
Profit = $3,310 · ROI = +66.2%
$10,000 in altcoin at $1.00 · Sell at $0.30 (loss)
Loss = −$7,000 · ROI = −70%
About the Author
Henry
Founder & Developer, Online Calculator Suite
Henry is the independent creator of Online Calculator Suite, based in Utah. He builds and maintains every calculator on this site and writes the guides, checking formulas against published sources such as the IRS, CDC and NIH. He is not a licensed financial advisor or medical professional, so results are for information only.