What does the S1257L Tax Code mean? (Scottish Income Tax 2026)

The standard tax code for most people in the UK is 1257L. This gives you a tax-free Personal Allowance of £12,570. If your code is S1257L, you get exactly the same £12,570 tax-free allowance. The only difference is what happens to the money you earn above that allowance.

Why is Scottish tax different?

The Scottish Government has the power to set its own Income Tax bands and rates for people who live in Scotland. Over the last few years, they have diverged significantly from the rest of the UK.

In England, there are only 3 tax bands (20%, 40%, 45%). In Scotland, there are 6 distinct tax bands (19%, 20%, 21%, 42%, 45%, 48%).

If your payroll software sees the "S" prefix on your code, it completely ignores the English tax rules and routes your wages through the complex Scottish tax algorithm instead.

Am I paying more tax because of the "S" code?

It depends entirely on how much you earn:

• Low Earners (Under £28,850): If you earn less than £28,850 a year, you actually pay slightly less tax in Scotland than in England. This is because Scotland has a 19% "Starter Rate" band for lower earners, saving you a maximum of £21 a year.
• Middle Earners (£28,850 to £43,662): You pay slightly more tax in Scotland because of the 21% "Intermediate Rate".
• Higher Earners (Over £43,662): You pay significantly more tax in Scotland. In England, the 40% tax rate doesn't kick in until you earn £50,270. In Scotland, the punishing 42% tax rate kicks in much earlier at £43,662. Furthermore, Scotland introduced a new 45% "Advanced Rate" for earnings over £75,000, and a 48% "Top Rate" for earnings over £125,140.

If you are a professional earning £60,000 a year, the S1257L tax code means you take home roughly £1,900 less per year than someone on a standard English 1257L code.

What if I live in England but work for a Scottish company?

You should not have an S-prefix tax code.

Scottish Income Tax is based entirely on where you live (your main residential address), not where your employer's head office is based.

If you live in Newcastle but commute to Edinburgh, or you live in London but work remotely for a Glasgow-based firm, you are an English taxpayer and should be on the standard 1257L code. If your employer's payroll software has accidentally assigned you an S-code because the company is Scottish, you are being incorrectly taxed.

How to fix an incorrect S1257L tax code

If you live in England, Wales, or Northern Ireland, but you have an S-prefix on your payslip, you must fix it immediately (especially if you earn over £43,000, as you are losing thousands of pounds to the Scottish 42% band).

Your employer cannot fix this for you. Payroll software takes instructions directly from HMRC. You must:

1. Log into your Personal Tax Account on Gov.uk (or the HMRC app).
2. Check the residential address HMRC has on file for you. It is highly likely they still have an old Scottish address on file from university or a previous rental.
3. Update your address to your current English residence.
4. HMRC's system will automatically recognize the cross-border move and send an electronic P6 coding notice to your employer, removing the "S" prefix.

Once removed, the payroll software will recalculate your tax using English rates and automatically refund any overpaid Scottish tax on your next payslip.

Frequently Asked Questions