Using the wrong crypto tax calculator could cost you more than you think
If you own crypto, calculating your tax isn’t simply a matter of subtracting what you paid from what you sold.
Your tax position depends on your complete transaction history, including transfers between wallets, token swaps, staking rewards and airdrops. If your crypto tax calculator doesn’t rebuild this history correctly, you risk:
overpaying tax on gains you didn’t really make;
underpaying tax and drawing unwanted attention from HMRC;
spending days fixing spreadsheets and exchange exports.
Let Finbooks calculate your crypto tax automatically
Simply connect your exchanges, wallets and blockchain addresses. Finbooks automatically reconstructs your transaction history, applies HMRC tax rules, calculates your capital gains, losses and taxable income.
You'll also receive tax-ready reports for your Self Assessment and detailed supporting reports explaining every calculation, making it easier to complete your tax return or share your records with your accountant if required.
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One calculator for your complete crypto tax position
- 1
Capital gains
Calculate realised gains from sales, swaps and other relevant disposals.
- 2
Capital losses
Identify losses that contribute to your overall Capital Gains Tax position.
- 3
Crypto income
Account for relevant income from activities such as staking and airdrops.
- 4
Estimated tax
Bring everything together to understand your overall crypto tax position.
From thousands of transactions to one tax position
Connect your accounts
Connect your exchanges, wallets and blockchain addresses.
Rebuild your history
Finbooks automatically matches transactions, identifies transfers between your own wallets and reconstructs the acquisition cost of every crypto disposal.
Generate the reports
Get pre-filled tax reports and supporting calculations for your Self Assessment or tax adviser.
| Spreadsheet | Generic crypto tax software | Finbooks | |
|---|---|---|---|
| Import multiple exchanges & wallets | Manual | ✓ | ✓ |
| Detect missing or inconsistent data | ✗ | Limited | ✓ |
| Identify internal transfers | Manual | Limited | ✓ |
| Apply UK tax rules | Manual | ✗ | ✓ |
| Calculate capital gains & losses | Manual | ✓ | ✓ |
| Calculate crypto income | Manual | ✓ | ✓ |
| Pre-filled reports for Self Assessment | ✗ | ✗ | ✓ |
| Detailed supporting calculations | ✗ | ✗ | ✓ |
Everything you need when it's time to file
Receive tax reports prepared with the relevant fiscal data, organised in line with UK tax rules and ready to be included in your Self Assessment.
Summary of capital gains and capital losses for each tax period.
Assets held and quantities owned during the reference period.
Complete chronological list of all transactions included in the calculations.
Income from dividends, interest, staking, airdrops, and similar activities.
Detailed breakdown of fees and recorded costs.
Document accompanying the reports, outlining the criteria applied and any exceptions.