About IsMyPayRight
IsMyPayRight helps UK employees understand their take-home pay, check the figures on a payslip, and see what a change in salary or deductions could mean.
Practical answers about your pay
Use the take-home pay calculator for a salary estimate, the payslip checker to compare deductions with an estimate, or compare two payslips to see which figures changed. The tools are free to use and do not require an account.
Results help you ask better questions of payroll or HMRC. A difference from an estimate is not proof of an error, and the tools do not replace your employer's payroll records or personalised tax advice.
How guides and calculations are prepared
Guides are published under the IsMyPayRight brand. They explain UK PAYE topics using official reference material, worked examples and links to the relevant tools. IsMyPayRight is independent of HMRC and does not claim HMRC approval or professional accreditation.
AI tools assist with development and content preparation. The calculators apply programmed tax rules to your inputs; their answers are not generated by an AI chat model. Automated tests check calculation examples and boundaries. These checks do not amount to an independent professional review of every guide or your payslip.
Where a guide has a recorded review date, it is shown on the page. Dates are not refreshed simply because the site is rebuilt. Topic-specific references appear in guides where available; the methodology and source list explain the calculation approach, checks and limitations.
Report something that looks wrong
You can flag a calculation or wording issue at hello@ismypayright.co.uk. Include the page address, tax year, selected options and what you expected to see. An official source link or an example using made-up figures helps explain the issue.
Please leave out names, National Insurance numbers, bank details and unredacted payslips. For an issue with your own tax code or payment, contact your employer's payroll team or HMRC directly.
Optional uploads and your privacy
You can enter payslip figures manually. If you choose to upload a file, Google Gemini helps read its fields and you review the extracted values before using them. Read the privacy notice for upload processing, shared links and analytics choices.