Live
CIS Tax & Refund Calculator
Check the CIS that should have been deducted, spot tax taken on materials, add expenses & mileage, and estimate Income Tax, Class 4 NI and a refund or extra to pay.
Use calculatorCalculators built for UK subcontractors & trades.
Check your CIS deductions, estimate a refund, and plan your pay — in plain English, with no sign-up and no data stored.
Runs entirely in your browser • England, Wales & Northern Ireland • Estimate only
🔒 Nothing is storedYour figures never leave this device. Calculations happen in your browser.
£ Start with CISOur first live tool checks labour-only CIS deductions, materials, expenses and mileage — more calculators are coming.
✓ Plain-English resultsA clear refund or extra-to-pay estimate, with the working shown underneath.
Calculator hub
Start with CIS. More tools coming.
One audience, many useful calculators. Each new tool will slot into this hub and share the same simple, private approach.
Coming soon
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Day Rate Comparison
Compare CIS, umbrella, sole trader and limited company day rates side by side.
Coming soonWhy TradeCalc UK?
A 30-second check, straight in your browser.
Thousands of subcontractors have 20% or 30% CIS taken before they see a penny — sometimes wrongly on materials. A quick check can show whether you may be due money back.
Estimate only — not tax advice. Results are illustrations based on the figures you enter and the rates shown. Your actual tax depends on your full circumstances. Check with HMRC or a qualified accountant before acting. No data you enter is stored or sent anywhere — calculations happen in your browser.