Skip to main content
PaySlipIQ
1257T

Tax Code 1257T Explained

Standard allowance but items require HMRC review

1257THMRC Review

What does 1257T mean?

The T suffix means your tax code includes items that HMRC needs to review. Your allowance is still £12,570 but there are complexities in your tax affairs. HMRC will not automatically update this code: they will write to you if changes are needed.

Annual tax-free allowance

£12,570

💡

Example

An employee with multiple income sources requiring manual HMRC review.

Need a deeper decode?

Open the interactive Tax Code Checker

Type any UK tax code (including S/C prefixes for Scotland and Wales, and W1/M1/X markers) and get the personal allowance, marginal rate, and band breakdown.

Tax Code Checker

Is your tax code being applied correctly?

Upload a photo of your payslip and we will check your deductions against HMRC 2026/27 rates.

Check My Payslip

Disclaimer: PayslipIQ provides educational guidance only. It is not financial, tax, or legal advice. Figures are estimates based on the data you entered. Always verify against your employer's payroll, your HMRC personal tax account, or a qualified adviser before making decisions.

Other common tax codes