10 free tools covering income tax, CIS, IR35, VAT, mileage, and more. Built for UK freelancers, contractors, and trades.
Calculate your CIS tax deduction under the Construction Industry Scheme.
Estimate your income tax and National Insurance as a sole trader.
Work out what day rate to charge, or convert a day rate to an annual salary.
Add or remove UK VAT at 20%, 5%, or 0% in seconds.
Calculate your HMRC-approved mileage claim for business travel.
Compare take-home pay as a sole trader vs a limited company director.
See the difference in take-home pay inside vs outside IR35.
Calculate profit margin on a job after materials, labour, and overhead.
Estimate your statutory redundancy pay based on age, service, and salary.
Calculate your statutory annual leave entitlement for any working pattern.
Whether you're a sole trader, a limited company director, a CIS subcontractor, or a freelance contractor, keeping on top of your tax position is essential. These free tools give you fast, reliable estimates based on the latest HMRC rates.
All figures are based on 2025/26 UK tax rates. These calculators are for guidance only — always consult a qualified accountant for personalised tax advice.