About UK Payroll Calculators

UK Payroll Calculators is a free set of calculators and plain-English guides for UK statutory pay — Statutory Sick Pay, notice periods, pro-rata salary and employer National Insurance. It is made for small employers, payroll staff and employees who need a statutory figure worked out properly, with the working shown, before it goes anywhere near a payroll run.

What you can work out here

The calculators cover the statutory payments an employer is most often asked about: how much SSP is payable under the current rules (including linked sickness periods), the statutory minimum notice for employers and employees, part-time pay and holiday on a pro-rata basis, and the full cost of employing someone once employer National Insurance and pension contributions are added. The guides answer the common questions behind those figures in plain English, each one linking to the calculator that works the answer out for your own numbers.

How the figures are produced

Every rate and threshold used on this site comes from the official guidance published on GOV.UK. The figures live in one place in the site's code, each calculator shows its working step by step from the numbers you enter, and the rates were last verified against GOV.UK on 7 November 2026. Statutory rates usually change each April; when they do, the site is updated and the verified date changes with them.

What this site is — and is not

This site provides general guidance only. It is not affiliated with GOV.UK or HMRC, and nothing on it is legal, tax or payroll advice for a specific situation. Statutory pay has edge cases — linked periods, varying work patterns, salary sacrifice — that a general calculator cannot settle. Always check the official guidance on GOV.UK for your specific circumstances, and take professional advice where the amounts matter.