We build free, accurate UK calculators for tax, employment law, benefits, health and property. Every figure is sourced from official UK legislation and verified annually so you get numbers you can trust.
AnyCalculator.co.uk provides free, instant calculators designed specifically for UK law and UK rates. We cover employment rights (redundancy pay, notice periods, holiday entitlement, maternity and paternity pay), tax and benefits (income tax, National Insurance, Universal Credit, tax refunds), property (stamp duty, mortgage affordability, remortgage savings), and health (BMI, pregnancy due dates, ovulation, calorie needs).
Every calculator is built to handle the complexity that matters — the 2-child limit in Universal Credit, the Personal Allowance taper above £100k, the difference between SDLT and LBTT, IVF due date calculation, ethnicity-adjusted BMI thresholds. We do not build simplified tools that give wrong answers for edge cases.
Rates and formulas are sourced directly from HMRC, DWP, the Employment Rights Act, and other primary UK legislation — not from third-party summaries.
Where HMRC provides its own calculator, we verify our outputs match across a range of inputs before publication.
UK statutory rates change every April. We update all affected calculators within the first week of April each year.
Where a calculation is simplified or approximate, we say so clearly in the disclaimer on every results panel.
Our calculators provide estimates for information and planning purposes. They are not a substitute for professional advice. For tax matters: consult a qualified accountant or HMRC directly. For employment law: consult an employment solicitor or ACAS. For benefits: contact Citizens Advice. For medical questions: consult your GP or NHS 111.
If you believe a figure is wrong or a rate has changed and has not been updated, please contact us and we will investigate within 48 hours. Our goal is that every figure on this site is correct and current.
Found an error? We review all accuracy reports within 48 hours. See our Privacy page for contact details.
All calculations happen entirely in your browser. We do not collect, store, or transmit any data you enter. No account is required. See our full Privacy Policy for details.