Free UK calculators
Straightforward tools for tax, pay & tips
No sign-up, no email wall - just clear, up-to-date UK calculators, built and maintained by Jarratt Web Services.
Self-Assessment Tax Calculator
Work out Income Tax and Class 4 National Insurance on your self-employed profit for 2026/27.
Take-Home Pay Calculator
Employee net pay from gross salary - tax, NI, student loan and pension.
IR35 Take-Home Comparison
Compare limited company vs. umbrella take-home pay for a contract rate.
Dividend Tax Calculator
Tax on dividend income alongside salary, using 2026/27 dividend rates.
VAT Calculator
Add or remove VAT, plus a Flat Rate Scheme estimate by trade sector.
Tronc & Tips Splitter
Split a tip pot fairly by hours, role, or equally between staff.