Tax Code S1257L Explained
S1257L is the standard tax code for Scottish taxpayers in 2025-26. The S prefix indicates Scotland, and 1257L means the standard Personal Allowance of £12,570 applies. Scotland has its own income tax rates with six bands: Starter rate 19% (£12,571–£15,397), Basic rate 20% (£15,398–£27,491), Intermediate rate 21% (£27,492–£43,662), Higher rate 42% (£43,663–£75,000), Advanced rate 45% (£75,001–£125,140), and Top rate 48% above that. National Insurance is the same as the rest of the UK.
Who gets tax code S1257L?
Scottish residents — those whose main place of residence is in Scotland — with a standard employment situation (one job, no complications). HMRC determines Scottish tax residence based on where you live, not where you work. If you live in Scotland, you will have an S prefix on your tax code regardless of where your employer is based.
Scottish Income Tax: Scotland sets its own income tax rates. For 2025-26, Scottish rates diverge meaningfully from England above ~£30,000 — the 42% Higher rate kicks in at £43,663 versus £50,270 in England. National Insurance is the same as the rest of the UK.
Take-home pay on tax code S1257L — 2025-26 examples
Examples below show Income Tax and take-home pay at common salary levels. National Insurance (NI) is also shown separately — NI is not affected by your tax code and applies on the same basis for all employees.
| Gross Salary | Income Tax | NI (est.) | Take-Home | Effective IT Rate |
|---|---|---|---|---|
| £20,000 | £1,458 | £594 | £17,948 | 7.3% |
| £25,000 | £2,458 | £994 | £21,548 | 9.8% |
| £30,000 | £3,483 | £1,394 | £25,123 | 11.6% |
| £35,000 | £4,533 | £1,794 | £28,673 | 13.0% |
| £40,000 | £5,583 | £2,194 | £32,223 | 14.0% |
| £45,000 | £6,914 | £2,594 | £35,492 | 15.4% |
| £50,000 | £9,014 | £2,994 | £37,992 | 18.0% |
| £60,000 | £13,214 | £3,211 | £43,575 | 22.0% |
| £75,000 | £19,514 | £3,511 | £51,975 | 26.0% |
| £100,000 | £30,764 | £4,011 | £65,225 | 30.8% |
Take-home = Gross − Income Tax − National Insurance. No pension, student loan or other deductions included. NI calculated at 8% between £12,570–£50,270 and 2% above. Effective IT Rate shows Income Tax as a percentage of gross salary.
If you have tax code S1257L, here's what you should know
- Your tax code appears on your payslip, P60, and any correspondence from HMRC about your PAYE tax.
- Your employer uses this code to calculate how much Income Tax to deduct from each pay period — they do not set it themselves.
- If your circumstances change (new job, change in benefits, marriage allowance), your code should update automatically — but it is worth checking.
- You can view and update your tax code online via your Personal Tax Account at gov.uk.
- If you think your code is wrong, contact HMRC on 0300 200 3300 or use the HMRC app.
- An incorrect tax code can mean you overpay or underpay tax — overpayments are refunded, underpayments are collected in future years.
Frequently asked questions
What does tax code S1257L mean?
S1257L is the standard tax code for Scottish taxpayers in 2025-26. The S prefix indicates Scotland, and 1257L means the standard Personal Allowance of £12,570 applies. Scotland has its own income tax rates with six bands: Starter rate 19% (£12,571–£15,397), Basic rate 20% (£15,398–£27,491), Intermediate rate 21% (£27,492–£43,662), Higher rate 42% (£43,663–£75,000), Advanced rate 45% (£75,001–£125,140), and Top rate 48% above that. National Insurance is the same as the rest of the UK.
Who gets tax code S1257L?
Scottish residents — those whose main place of residence is in Scotland — with a standard employment situation (one job, no complications). HMRC determines Scottish tax residence based on where you live, not where you work. If you live in Scotland, you will have an S prefix on your tax code regardless of where your employer is based.
How much do I take home on tax code S1257L earning £30,000?
On tax code S1257L with a £30,000 salary, you take home £25,123 per year (£2,094 per month) after Income Tax of £3,483.
Is tax code S1257L correct for me?
Your tax code is set by HMRC based on your individual circumstances. If you believe your tax code is wrong, contact HMRC on 0300 200 3300 or check your Personal Tax Account at gov.uk. An incorrect code could mean you are paying too much or too little tax.
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