Crypto Tax Calculator

Trade Inputs

Compute an estimated capital gain, fees, and tax owed for a single transaction.

How This Calculator Works

Capital-gain tax is normally calculated as the gain realised when you sell an asset. For a single trade, the gain equals the sale proceeds (sell price × quantity) minus the cost basis (buy price × quantity) minus any fees you paid. The resulting number is the taxable gain, and you multiply it by your applicable long-term or short-term tax rate.

Our simplified model uses a single trade, a single fee percentage applied to both sides, and one tax rate. Real-world reporting requires per-lot cost basis tracking, often with FIFO or specific identification. Your actual liability is the sum of all taxable events across the year, reduced by losses, exemptions, and deductions.

Formulas

Proceeds = sell × qty; Cost basis = buy × qty; Fee = (proceeds + cost basis) × (fee% ÷ 100); Capital gain = proceeds − cost basis − fee; Estimated tax = max(0, capital gain × tax% ÷ 100); Net profit = capital gain − estimated tax.

Example Calculation

Buy 1.5 BTC at $20,000 ($30,000 cost basis) and sell at $35,000 ($52,500 proceeds) with 0.20% in fees. Fees = $165; taxable gain = $52,500 − $30,000 − $165 = $22,335. At a 25% short-term rate, the estimated tax is $5,584, leaving a net profit of $16,751.

Important Notes

• This is an estimate for informational purposes only — not tax advice.
• Many jurisdictions distinguish short-term vs long-term gains, often with very different rates. Long-term rates are usually more favourable after a 1-year holding period.
• Tax-loss harvesting, deductions, exemptions, and credits can change the final number dramatically.
• Wash-sale rules for crypto vary by jurisdiction and may apply after a future rule update.
• Income from staking, airdrops, mining, and interest is taxed differently than capital gains in many places.

Frequently Asked Questions