Guidance
Check what your tax code means
Use this tool to find out what the numbers and letters in your tax code mean and how much tax you will pay.
- From:
- HM Revenue & Customs
- Published
- 25 July 2023
- Last updated
- 11 September 2025 — See all updates
ToUse checkthis tax code checker to:
- find out what the letters and numbers in your tax code
means,mean - see how much Income Tax you’re due to pay
- update your records if something’s wrong
- understand the deductions included in your tax code
To use the tool, you will need your:
- tax code
- annual income, before any deductions
- company benefits details
- State Pension amount
Updates to this page
Published 25 July 2023
Last updated 11 September 2025
href="#full-history">+ show all updates
-
A section has been added to advise what information the tool will provide, and new tax code functionality has been added to improve the customer journey.
-
Added translation
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Update history
2026-04-06 09:00
The tool has been updated with the new rates for the 2026 to 2027 tax year.
2025-09-11 12:14
A section has been added to advise what information the tool will provide, and new tax code functionality has been added to improve the customer journey.
2023-07-25 14:13
Added translation