Home / Tax code checker
TREGGENA ADVICE - CASTLE EDEN & UK-WIDE
Make sense of
your tax code.
Understand what the letters and numbers on your payslip or pension statement indicate, and what to check if something does not look right.
START WITH YOUR PAYSLIP
What does your code say?
Tax-code explanation for 2026/27. No access to your HMRC account; this cannot confirm that your code is correct or establish a refund.
CHECK THE UNDERLYING INFORMATION
The code is only
part of the picture.
Your income
Check which income source uses the code and whether HMRC’s estimate for the year is accurate.
Benefits and allowances
Company benefits, other income, earlier underpayments and allowance transfers can affect a code.
Check with HMRC
Use your personal tax account or the official Income Tax contact route if something needs correcting.
BEFORE YOU RELY ON THE RESULT
A little more
about tax codes.
Information checked 2 October 2026. GOV.UK: what tax codes mean