Crypto Tax Calculator - UK
Estimated Tax Summary
Gross Profit:
Tax-Free Allowance:
Net Profit (after tax-free allowance and fees):
CGT if your income > £50,270:
CGT if your income > £50,270:
Profit After Tax:
Overview
What is a Crypto Tax Calculator (UK)?
This Crypto Tax Calculator for the UK helps you estimate capital gains tax on your cryptocurrency transactions for the 2025/26 tax year. By entering your purchase price, selling price, fees, and total income, the tool calculates your taxable gains after the £3,000 CGT allowance and splits the tax into 10% and 20% rates based on your income tax band. It simplifies the process, ensuring you understand your tax obligations under HMRC rules.
Crypto Taxes in the UK: Rates and Brackets
In the UK, cryptocurrency gains are subject to Capital Gains Tax (CGT). For the 2025/26 tax year, you have a £3,000 annual CGT allowance, meaning the first £3,000 of gains is tax-free. Gains above this are taxed at 10% for Basic Rate taxpayers (total income below £50,270) or 20% for Higher and Additional Rate taxpayers (income above £50,270). If your gains push you across tax bands, the calculator splits the tax into 10% and 20% portions. Crypto transactions classified as trading income (e.g., frequent trading) may be taxed as income instead, so consult a tax professional for accurate classification.
How to Calculate Crypto Taxes in UK
To calculate crypto taxes, subtract the purchase price from the selling price to get your gross profit. Deduct the £3,000 CGT allowance (or the remaining portion if already used) to find the taxable gain, then subtract any fees to get the net taxable profit. Based on your total income, apply the 10% rate if below £50,270, or 20% if above. If the taxable profit spans both bands, calculate 10% on the portion within the Basic Rate band and 20% on the remainder. This calculator automates the process, providing a clear breakdown of your gross profit, tax-free allowance, net profit, CGT at 10% and 20%, and profit after tax, formatted for easy reading.
How to Claim Crypto Losses on Taxes in UK
In the UK, crypto capital losses can offset capital gains in the same tax year, reducing your CGT liability. If losses exceed gains, you can carry them forward to future tax years or, in some cases, back one year. Report losses on your Self Assessment tax return (SA108 Capital Gains Summary). Keep detailed records of all transactions, including dates, amounts in GBP, and wallet addresses, for at least four years after the tax year, as HMRC may audit your crypto activities. For lost or stolen crypto, losses may be claimable if you provide evidence, such as police reports or exchange records.
What is Capital Gains Tax?
Capital Gains Tax (CGT) is a tax on the profit you make when selling or disposing of assets, such as cryptocurrency, that have increased in value. In the UK, for the 2025/26 tax year, CGT applies to crypto gains above the £3,000 annual allowance at rates of 10% (Basic Rate taxpayers) or 20% (Higher/Additional Rate taxpayers), depending on your total income. Unlike income tax, CGT only applies to the gain, not the entire sale amount. You must report crypto gains via Self Assessment if they exceed the allowance or if HMRC requests it. Always maintain records to comply with HMRC regulations.
