The S1257L Tax Code Explained.
Everything you need to know about what S1257L means for your payslip, your personal allowance, and your take-home pay in 2026/27.
Quick Definition
Scottish taxpayer — standard allowance. The S prefix means you are a Scottish taxpayer, so Scottish Income Tax rates and bands apply (set by the Scottish Parliament). Your personal allowance (£12,570) is the same, but the bands and rates above that differ from the rest of the UK. Check the Scottish Government website for the current bands.
How much tax will I pay on S1257L?
Use the interactive tool below to see how the S1257L tax code impacts different salary levels. This calculation includes Income Tax and National Insurance for the 2026/27 tax year.
How S1257L affects a £35,000 salary
Annual Income Tax
£4,484
13% of total income
Monthly Take-Home
£2,393
After Tax, NI & Pension
Based on 2026/27 tax rates.Full breakdown →
Is the S1257L tax code right for me?
Tax codes are assigned by HMRC based on your reported income and circumstances. You might be on S1257L if:
- This is your primary source of employment income.
- HMRC has recently updated your record following a change in benefits.
- You have started a new job and your previous P45 has been processed.
If you believe this code is incorrect, you should contact HMRC as soon as possible to avoid overpaying or underpaying tax.
Frequently asked questions about the S1257L tax code
What does the S1257L tax code mean?
The S prefix means you are a Scottish taxpayer, so Scottish Income Tax rates and bands apply (set by the Scottish Parliament). Your personal allowance (£12,570) is the same, but the bands and rates above that differ from the rest of the UK. Check the Scottish Government website for the current bands.
Is the S1257L tax code correct for me?
Whether S1257L is right depends on your personal circumstances. Typically, Scottish taxpayer — standard allowance. If you have multiple jobs or benefits in kind, this might change.
How do I change my tax code?
You can change your tax code by contacting HMRC directly on 0300 200 3300 or by using the 'Check your Income Tax' service on the official gov.uk website.
Related Resources
Still not sure?
Try our full interactive checker to see every deduction on your payslip.
Quick reference — common UK tax codes
Last updated: July 2026. This information is for educational purposes only and does not constitute financial advice. Always verify your specific tax situation with HMRC or a qualified professional.