33 HMRC-aligned calculators for sole traders, landlords, employees & families. No signup. No data stored. Results in seconds.
"Finally a calculator that handles the 60% tax trap correctly. Saved me a fortune by showing exactly how much to put into my pension."
"Used the buy-to-let calculator to understand Section 24. So much clearer than anything my accountant sent me. Genuinely impressed."
"The CIS refund calculator was spot on — matched my accountant's figure exactly. Bookmarked and shared with my whole crew."
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Our new UK expense tracker tells you exactly what you can claim with HMRC — with mileage logging, Claim Check Score, and one-click PDF reports for your accountant.