1,000+ on-chain transactions per client. S104 pools built by hand. Same-day and B&B rules applied manually. ChainTax does all of it — you review the audit trail and sign off.
Built by a UK crypto investor who needed this for his own accountant.
The DeFi client problem
Your client connects their wallets and imports exchange CSVs. ChainTax classifies every transaction across 27 protocols and 5 chains, then shares a read-only report link with you. You verify and file.
Result: you eat the margin or turn the client away.
Review in minutes. Bill for advice, not data entry.
The feature accountants actually need
Every disposal shows the matching rule applied, the S104 pool snapshot before and after, the gain calculation, and the SA108 box it maps to. No black boxes. No "trust us".
The maths
Adjust the numbers to match your practice. ChainTax Unlimited is a one-time £179 per client per tax year — no subscriptions.
in time costs recovered — before accounting for new clients you can now accept profitably.
We'll set up a demo with your most complex client type — every transaction classified, every disposal with Show Working, full SA108 output.