Enter the tax code on your payslip to see what it means, your tax-free amount and whether you may be paying too much tax. Covers 1257L, BR, 0T, K codes, emergency codes and Scottish and Welsh codes.
Enter the code from your payslip. Nothing is stored or sent.
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Anyone paid through PAYE.
Check your payslip.
BR and D0 codes.
Emergency codes.
Codes on pension income.
Use the calculator for free, then let a Chartered Certified Accountant prepare and file your return. VAT included.
All prices include VAT.
Based on 2026/27 rates.
From your payslip or P60.
Annual pay from that job.
Allowance and letter.
Contact HMRC or us.
| Code | Meaning |
|---|---|
| 1257L | Standard Personal Allowance of £12,570 |
| M / N | Receiving or giving Marriage Allowance |
| BR | All pay taxed at 20% |
| D0 / D1 | All pay taxed at 40% / 45% |
| 0T | No tax-free allowance |
| NT | No tax taken |
| K | Deductions exceed your allowance |
| W1 / M1 / X | Emergency code |
In short: the number times 10 is your tax-free pay for the year. The letter says why. 1257L means £12,570 tax-free at the standard rate. An S at the start means Scottish rates and C means Welsh rates.
Codes ending W1, M1 or X tax each pay period on its own. You may overpay. They usually happen when you start a new job without a P45.
Update HMRC through your personal tax account. Overpaid tax can be reclaimed. Our payroll services help employers, and our Self Assessment tax returns service reclaims overpayments. See your pay with the salary after tax calculator. More on our tax calculators page.
Official guidance: Tax codes

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