Free Tools

Tax Calculators for UK Tradesmen

No signup, no nonsense. Instant tax calculations built specifically for self-employed tradesmen, subcontractors, and sole traders. Updated for the 2025/26 tax year.

Construction Industry SchemeCIS Tax CalculatorCalculate your CIS deductions instantly. Enter your gross payment and see your net pay, deduction amount, and annual projections at 20%, 30%, or 0% rates.Use calculator →

Income Tax & National InsuranceSelf-Employed Tax CalculatorWork out your income tax, National Insurance (Class 2 & 4), and student loan repayments for 2025/26. See your total tax bill and take-home pay as a sole trader.Use calculator →

Value Added TaxVAT CalculatorAdd or remove VAT from any amount at standard (20%), reduced (5%), or zero rate. Plus guidance on whether you should register for VAT as a tradesman.Use calculator →

Why We Built These Calculators

If you're a plumber, electrician, builder, or any kind of tradesman working for yourself in the UK, tax shouldn't be a mystery. But between CIS deductions, self-assessment, National Insurance classes, and VAT thresholds, it often is.

These free calculators give you instant answers — no accountant appointment needed. Whether you're a CIS subcontractor wanting to know your actual take-home, a sole trader estimating your year-end tax bill, or a growing business figuring out VAT, just plug in your numbers and get results in real time.

All calculations use the latest 2025/26 HMRC tax rates and thresholds. They run entirely in your browser — we don't store any of your data.

Managing your taxes shouldn't be this hard.

Try A.X.E.L — job management software built for tradesmen. Leads, quotes, invoicing, expenses, and CIS returns in one place.

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