A UK crypto tax report you can actually check.

Yes. You only add your public wallet address. ChainTax never asks for a seed phrase, private key, signature, or permission to move funds. It uses the same public transaction history you can see on a block explorer.

ChainTax follows the UK matching order automatically. It first looks for purchases on the same day, then purchases in the following 30 days, then uses the average cost of the remaining holding. It recognises 34 types of supported DeFi and crypto activity. Anything unclear is put on your review list instead of being presented as solved.

You can correct it. Change the transaction type, amount received, purchase cost, or token. Your correction is kept when you sync again, so you only need to fix it once. ChainTax then recalculates the report.

Yes. Create a secure read-only link from your report. Your accountant can see every sale, the price used, the original purchase cost, and how the gain or loss was calculated. They do not need a login and cannot access your dashboard. When the checks pass, the report includes the UK tax return figures for them to review.

CSV import: Coinbase, Binance and Kraken; Crypto.com App (beta); plus Koinly universal CSV (compatible format). The Crypto.com App importer is in beta. It is parser-tested but has not yet been validated end to end against a current real export, so review the imported rows before relying on them.
On-chain: Ethereum, Arbitrum, Optimism, Base, and Polygon. Solana, Avalanche, BSC and others are not yet covered. For those, manual entry or a Koinly CSV is the workaround for now.

ChainTax recognises supported NFT trades and staking rewards automatically. For an unsupported marketplace or activity it cannot rebuild from public history, you can add the original purchase, sale, income, or historical price yourself. Your entry is saved for future recalculations.

ChainTax report access is priced for one selected UK filing year. Your highest purchased tier sets account-wide capacity: £49 Light supports up to 2,500 transaction records and £99 Active supports up to 10,000. There is no subscription or automatic renewal, and calculation quality does not change by tier.

Use the Concierge service. We handle the import, work through anything that needs your input, and give you the same clear report. It is quote-first and typically costs £249–£449 depending on the size and complexity of your history. Email hello@chaintax.co.uk. For a first contact, do not send private keys, seed phrases, passwords, API secrets, authentication codes, full transaction histories, complete tax reports, unnecessary identity documents, unnecessary wallet addresses, transaction hashes, or source files. Send only the tax year or years, an approximate transaction-record band, broad source categories, broad activity types, and any deadline. We will agree the next appropriate step if more information is genuinely necessary.