Change of https://www.gov.uk/guidance/check-what-your-tax-code-means

Change description : 2025-09-11 12:14:00: 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. [Guidance and regulation]

Showing diff : 2023-07-25 13:14:04.400572092 +00:00..2025-09-11 11:14:24.389945 +00:00

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.

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