What does the S1257L tax code mean?
S1257L means: Tax-free allowance of about £12,570.00 a year. In short: the standard code for Scottish taxpayers. A UK tax code is the instruction HMRC sends your employer for the 2026/27 tax year (6 April 2026 to 5 April 2027): it sets how much of your pay is tax-free before income tax is deducted through PAYE, so the code on your payslip directly decides your take-home. The standard code for most employees with one job is 1257L, worth £12,570 of tax-free income a year, any other code should have a reason behind it (a company benefit, a second job, an HMRC adjustment), and a code that's wrong for your situation means paying the wrong tax every single payday until it's fixed. Decoded below against HMRC's rules as checked on 2026-08-28, with what S1257L costs or saves against the standard code.
Decoded
- S: Scottish taxpayer, the six Scottish bands apply to your pay.
- L: you get the standard personal allowance.
The six Scottish bands an S code puts you in
The S prefix is the whole difference, and it is a larger one than the code suggests. A Scottish taxpayer gets the same £12,570 allowance as everyone else, then six bands instead of three, starting at 19% rather than 20% and reaching 48% at the top. The crossover is what matters on a payslip: below £29,526 an S code takes marginally less, and above it marginally more, because the Scottish higher rate starts at £43,662 where the rest of the UK waits until £50,270.
| Scottish band | Rate | Taxable income it covers |
|---|---|---|
| Starter rate | 19% | £12,570 to £16,537 |
| Basic rate | 20% | £16,537 to £29,526 |
| Intermediate rate | 21% | £29,526 to £43,662 |
| Higher rate | 42% | £43,662 to £75,000 |
| Advanced rate | 45% | £75,000 to £137,710 |
| Top rate | 48% | £137,710 and above |
On £32,000 an S1257L code takes £14.93 less income tax a year than 1257L does, which is £1.24 a month. The Scottish income tax calculator does it for any salary, and the band table for both systems is on the tax rates page.
Bands from the Scottish Government rates and bands. Scottish rates apply to earnings and pensions, never to savings interest or dividends, which stay on the UK bands whatever your code says.
How do I find out what code I should be on?
Your current code is on every payslip and on your P60, and the reasoning behind it is in your HMRC personal tax account, which lists the allowances and deductions that produced the number. If the account shows an estimate that is out of date, a company benefit you no longer have or a job you have left, you can change it there and a new code reaches your employer within a few weeks. Employers cannot change a code themselves: they apply whatever HMRC issues, so the fix always runs through HMRC rather than payroll.
Check your own code
Type any code, this page's and every other format HMRC issues:
Tax-free allowance of about £12,570.00 a year.
- L: you get the standard personal allowance.
Other codes people look up
2026/27 rules, checked 28 August 2026 by Hadi. If your code looks wrong, correct it via your personal tax account on gov.uk, refunds for the current year arrive through your pay automatically.