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Free UK Tax Code Checker
Enter your tax code and we tell you what it means, whether it looks wrong, and if you may be owed a refund — instantly, free, no email required.
Informational only, not tax advice. Estimates are based on the code you enter. Final decisions rest with HMRC.
Quick answer
The standard 2025/26 UK tax code is 1257L. Codes such as BR, D0, D1, 0T, or any code with a W1, M1 or X suffix usually mean you are on emergency or non-cumulative tax and may have overpaid. You can reclaim overpaid PAYE tax directly from HMRC for the last four tax years.
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