Scottish tax codes — the S prefix explained

Scottish tax codes start with the letter S — for example S1257L, SBR, or SK475. The S prefix tells your employer to apply Scotland's income tax band structure rather than the rest-of-UK structure when calculating your tax. The personal allowance is identical across the UK (£12,570 for 2026/27, frozen until April 2031), but Scotland's bands above the allowance differ — six bands ranging from 19% to 48% versus the three rUK bands (20%/40%/45%). National Insurance is a UK-wide reserved tax and is unaffected by Scottish residence.

Verified against 3 official sources · Last reviewed 12 June 2026
On this page
  1. Scotland's 2026/27 tax bands
  2. Worked example — S1257L on £30,000
  3. Worked example — S1257L on £55,000
  4. Worked example — S1257L on £100,000
  5. Worked example — S1257L on £150,000 (top earner)
  6. When the S prefix applies
  7. What the S prefix does NOT change
  8. Variants of Scottish codes
  9. Spotting a wrong S code
  10. Fixing a wrong code
  11. Scottish + rest-of-UK income
  12. Practical checklist
  13. In short

Scotland's 2026/27 tax bands

Band Income range Rate
Starter £0 – £2,827 above personal allowance 19%
Basic £2,827 – £14,921 above PA 20%
Intermediate £14,921 – £31,092 above PA 21%
Higher £31,092 – £62,430 above PA 42%
Advanced £62,430 – £112,570 above PA 45%
Top Above £112,570 above PA 48%

After the £12,570 personal allowance: - Starter rate kicks in for £0-£2,827 of taxable income (gross £12,570-£15,397) - Higher rate (42%) starts at £43,663 of gross income - Top rate (48%) starts at £125,140

Compare to rUK: 20% basic up to £50,270 → 40% higher → 45% additional above £125,140.

Worked example — S1257L on £30,000

Scottish calculation: - Personal allowance: £12,570 (tax-free) - Taxable income: £17,430 - Starter (£0-£2,827): £2,827 × 19% = £537 - Basic (£2,827-£14,921): £12,094 × 20% = £2,419 - Intermediate (£14,921-£17,430): £2,509 × 21% = £527 - Total Scottish Income Tax: £3,483

rUK comparison (1257L on £30,000): - Personal allowance: £12,570 - Taxable: £17,430 - All in basic rate: £17,430 × 20% = £3,486

For £30,000 the difference is negligible (~£3) — Scotland's complexity offers slight savings on the starter band but matches rUK overall.

Worked example — S1257L on £55,000

Scottish: - Personal allowance: £12,570 - Taxable: £42,430 - Starter (£2,827): £537 - Basic (£12,094): £2,419 - Intermediate (£16,171): £3,396 - Higher (£11,338): £4,762 - Total: £11,114

rUK on £55,000: - Personal allowance: £12,570 - Taxable: £42,430 - Basic (up to £50,270 of gross = £37,700 of taxable): £37,700 × 20% = £7,540 - Higher (£4,730 of taxable): £4,730 × 40% = £1,892 - Total: £9,432

For £55,000, Scotland costs £1,682 more per year. The earlier higher-rate threshold (£43,663 vs £50,270) is the main driver.

Worked example — S1257L on £100,000

Scottish: - Personal allowance: £12,570 - Taxable: £87,430 - Starter, Basic, Intermediate: £19,000 × ~20% blended = ~£3,890 - Higher (£31,092 to £62,430 = £31,338): £13,162 - Advanced (£62,430 to £87,430 = £25,000): £11,250 - Total: ~£28,300

rUK on £100,000: - £37,700 × 20% = £7,540 - £49,730 × 40% = £19,892 - Total: £27,432

For £100,000, Scotland costs ~£900 more per year.

Worked example — S1257L on £150,000 (top earner)

Scotland (allowance fully tapered above £125,140): - Effective taxable: £150,000 (no allowance) - Higher: bands up to £62,430 of "above-PA" basis = £18,000+ - Advanced: £30,000 × 45% = £13,500 - Top: £37,430 × 48% = £17,966 - Plus the starter/basic/intermediate from £0 lift to ~£3,890 - Total: ~£53,500

rUK on £150,000: - £37,700 × 20% + £49,730 × 40% + £37,430 × 45% - = £7,540 + £19,892 + £16,844 = £44,276

For £150,000, Scotland costs ~£9,200 more per year. The 48% top rate vs 45% rUK additional rate is the major driver.

When the S prefix applies

You're a "Scottish taxpayer" if: - You live in Scotland (main home is in Scotland) - You spend the majority of the tax year in Scotland - You don't qualify for non-residence

HMRC determines this from your address records, P60s, and self-declarations. If you move to or from Scotland mid-year, your tax code should update.

What the S prefix does NOT change

  • Personal allowance: same £12,570 across the UK
  • National Insurance: 8% main rate, 2% upper rate — UK-wide
  • Allowance taper above £100,000: same mechanism, same thresholds
  • Marriage Allowance: same UK-wide rules
  • Pension contributions: same UK-wide rules for tax relief
  • Student loan deductions: same UK-wide thresholds (Plans 1, 2, 4, 5, PGL)

The S prefix is specifically about the income tax band structure applied above the personal allowance.

Variants of Scottish codes

Code Meaning
S1257L Standard Scottish allowance + standard suffix
SBR Scottish basic rate (20% on everything from this source) — Scotland's BR equivalent
SD0 Scottish higher rate flat code (42% on this source)
SD1 Scottish advanced rate flat code (45% on this source)
SD2 Scottish top rate flat code (48% on this source)
SK475 Scottish K code — negative allowance plus Scottish bands
S1257L W1/M1/X Scottish emergency basis
S1383M Scottish + Marriage Allowance received
S1131N Scottish + Marriage Allowance given

Spotting a wrong S code

Most common error: someone in Scotland is on a non-S code (1257L instead of S1257L) — typically because their address change wasn't processed. The result: rUK bands applied to Scottish income.

For a £55,000 earner, this saves them £1,682 per year — until HMRC corrects mid-year or at year-end via P800, then reclaims via underpaid tax.

Reverse situation: someone in England on an S code. Costs them money. Worth fixing fast.

Fixing a wrong code

If your code prefix doesn't match your residence:

  1. Update your address via Personal Tax Account at gov.uk/personal-tax-account
  2. HMRC processes the change within 2-6 weeks
  3. New code issued to your employer with correct (or removed) S prefix
  4. PAYE catches up at next pay run

For backdating older overpayments: HMRC's P800 reconciliation usually catches it. For 4+ years back: Self Assessment.

Scottish + rest-of-UK income

If you live in Scotland but work for a UK-wide employer: - Your tax code prefix is S (based on residence) - Your employer applies Scottish bands to your earnings - Your bank interest, dividends, savings income are taxed at UK-wide rates (Scottish devolution covers non-savings non-dividend income only)

This means cross-border situations have mixed tax. Self Assessment handles the reconciliation if needed.

Practical checklist

  1. Check your address is correctly Scottish in HMRC's records
  2. Verify your code starts with S
  3. Decode it through the tax code checker using Scottish bands
  4. Compare against your payslip
  5. If mismatched, update address via Personal Tax Account
  6. For complex multi-source income: consider Self Assessment

In short

Scottish tax codes (S prefix) apply Scotland's six-band income tax structure rather than the three rUK bands. Personal allowance is the same £12,570 UK-wide; NI is UK-wide. Higher earners pay materially more in Scotland; very low earners may save a little via the 19% starter rate. For broader context see tax codes hub → and Welsh tax codes →.

Frequently asked questions

Who gets a Scottish tax code?

UK taxpayers who live in Scotland. Tax residence is determined by where your main home is, not where you work. If you live in Scotland and work in England (or vice versa), your tax code reflects your residence, not your workplace.

Is Scottish income tax higher than rUK?

On most income, yes. Scotland's bands cut in lower (higher rate starts at £43,663 instead of £50,270) and the top rate is 48% (vs 45% rUK). The differences accumulate especially for higher earners. The starter rate of 19% gives a small advantage on very low taxable income.

Does the S prefix change my National Insurance?

No. NI is reserved to Westminster and is identical UK-wide. The S prefix only affects Income Tax. Same 8% main rate and 2% upper rate apply regardless of Scottish residence.

What if I move from Scotland to England?

Your tax code should change to remove the S prefix from the next tax year (or sooner if HMRC processes the change mid-year). Update your address via Personal Tax Account or HMRC notification. The change can take 4-8 weeks.

Does my Personal Allowance differ in Scotland?

No. £12,570 is the UK-wide personal allowance for 2026/27. The £100,000 taper also applies the same way. Scotland's devolution covers the bands above the allowance, not the allowance itself.

What's the difference between S1257L and 1257L?

S1257L applies Scottish bands; 1257L applies rUK bands. Both have the same £12,570 personal allowance and the same standard-circumstances suffix (L). The difference is in the band structure above the allowance.

Glossary terms used on this page

Quick definitions for the key terms above.

  • Personal allowance — The amount you can earn each tax year before paying any UK Income Tax — £12,570 in 2026/27, frozen until April 2031.
  • Tax code — A short code on your payslip that tells your employer how much tax-free Personal Allowance to apply to your pay each period.

Sources

All figures on this page are sourced from official UK government publications. We don't cite secondary commentary or other calculator sites.

  1. gov.scot — Scottish Income Tax rates and bands 2026 to 2027
  2. GOV.UK — Income Tax rates and allowances
  3. HMRC — Statutory Residence Test

All tax figures on this page use the same configuration that powers our calculators — see our editorial standards for the review process.

Last reviewed: 12 June 2026. Next review due 12 December 2026.
Recent changes: New tax-codes cluster page covering Scottish S-prefix codes for 2026/27.

Disclaimer: This page provides general information based on published HMRC and gov.scot figures. It is not personal tax or financial advice. For your specific situation, please consult a qualified accountant or contact HMRC directly.