Disclaimer

Our calculators give estimates to help you understand your money. They are not financial or tax advice.

Last reviewed 5 October 2026

Estimates, not advice

Everything on Sumpath is general information. Results are estimates based on the figures you enter and the rules for the tax year shown on the page. They do not take account of your full circumstances, and they are not a recommendation to do anything.

Before making a financial decision, such as accepting a job offer, changing a pension contribution or buying a property, check the figures with HMRC, your employer or a qualified adviser.

Why your real figures can differ

  • Pay periods. We work out tax on yearly figures. Payroll works pay period by pay period, so a payslip can differ by a little.
  • Your tax code. We assume the standard tax code. Benefits from your job, underpaid tax from earlier years, or other income can change your code (GOV.UK: why your tax code might change).
  • Things we leave out. Some reliefs, allowances and types of income are not included. The How we calculate page lists them.
  • Rule changes. Tax rules change, often at the Budget. We update our figures, but there can be a short delay.

Not HMRC

Sumpath is an independent website. We are not HMRC, we are not part of the UK government, and we are not authorised or regulated to give financial advice.

Links to other sites

We link to GOV.UK and other sites so you can check our sources. We are not responsible for the content of other websites.

Our responsibility

We work hard to keep our figures accurate and we fix mistakes when we find them, but we cannot promise that every result is correct or complete. To the extent the law allows, we do not accept responsibility for loss caused by relying on results from this site. Our terms of use say more.