Why is my tax code 1257L and not another number?

1257 × 10 = £12,570, which is the 2026/27 standard Personal Allowance. The 'L' suffix confirms you're entitled to the normal, untouched PA. If your allowance differs (Marriage Allowance, company benefits, tax owed), HMRC adjusts the number and/or the letter.

Will 1257L change for 2027/28?

The Personal Allowance is currently frozen at £12,570 through to at least April 2028 under policy announced in successive Budgets. Unless a future fiscal event unfreezes it, 1257L stays the standard code through 2027/28.

My code is 1257L but my salary looks wrong on payslip — what's happening?

Check whether the code has a W1, M1 or X suffix (non-cumulative/emergency). Without that, your pay should reconcile year-to-date through PAYE. If totals still look off, log into your Personal Tax Account at gov.uk/personal-tax-account — HMRC shows the exact PA and any deductions they've applied.

Does 1257L apply in Scotland?

Yes — the Personal Allowance of £12,570 is UK-wide, so Scottish taxpayers also use 1257L (sometimes written with the Scottish 'S' prefix, e.g. S1257L). The PA amount is the same; only the income-tax bands above it differ.

1257L Tax Code Explained (UK 2026/27)

What the 1257L tax code means

The 1257L tax code tells your employer (or pension provider) to apply the full standard Personal Allowance of £12,570 to your pay before calculating Income Tax. The number '1257' is simply your PA divided by 10; the 'L' suffix signals this is the normal tax code with no adjustments.

In practice, your first £12,570 of annual income from this source is tax-free. Everything above that is taxed through the usual bands — 20% basic rate up to £50,270, 40% higher rate up to £125,140, 45% additional rate above that (England, Wales and Northern Ireland; Scotland has different bands).

HMRC defaults most UK employees to 1257L at the start of each tax year, updating it only when your circumstances change — a new job mid-year, company benefits, claimed Marriage Allowance, state pension, or an adjustment from previous under- or overpaid tax.

When you'll see 1257L

Your main (or only) job — 1257L applies to the single employment that HMRC believes uses your full PA.
After HMRC processes your P45 from a previous employer, confirming the PA is being used correctly.
After a standard Starter Checklist declaration when joining a new employer.
Your first salaried job with no prior PAYE history, once HMRC processes the tax-year setup.

What to do if you have a 1257L code

Usually nothing — this is the expected code for most employees. Check your payslip shows 1257L (not a variant like 1257L W1).
If you also have a second job, expect the second job's tax code to be BR, D0, or D1 because your PA is used up on the main job.
If you claim Marriage Allowance, your code shifts to 1383M (received) or 1131N (transferred) — see the relevant detail pages.
If you receive untaxed company benefits (car, private medical), HMRC may reduce the numerical part of your code (e.g. to 1100L) to recover tax on those benefits via PAYE.

Worked example

Gross salary £35,000 on 1257L. Personal Allowance £12,570 is tax-free. The remaining £22,430 falls within the basic-rate band (up to £50,270), so Income Tax is 20% × £22,430 = £4,486. National Insurance is calculated separately on pay above £12,570 at 8% (Class 1, 2026/27 rate). Take-home before any pension or student loan is roughly £28,720 per year.

Want to see the numbers for your own salary? Use the salary calculator and pick 2026/27 to see how 1257L interacts with your full take-home.

Frequently asked questions about 1257L

Why is my tax code 1257L and not another number?: 1257 × 10 = £12,570, which is the 2026/27 standard Personal Allowance. The 'L' suffix confirms you're entitled to the normal, untouched PA. If your allowance differs (Marriage Allowance, company benefits, tax owed), HMRC adjusts the number and/or the letter.
Will 1257L change for 2027/28?: The Personal Allowance is currently frozen at £12,570 through to at least April 2028 under policy announced in successive Budgets. Unless a future fiscal event unfreezes it, 1257L stays the standard code through 2027/28.
My code is 1257L but my salary looks wrong on payslip — what's happening?: Check whether the code has a W1, M1 or X suffix (non-cumulative/emergency). Without that, your pay should reconcile year-to-date through PAYE. If totals still look off, log into your Personal Tax Account at gov.uk/personal-tax-account — HMRC shows the exact PA and any deductions they've applied.
Does 1257L apply in Scotland?: Yes — the Personal Allowance of £12,570 is UK-wide, so Scottish taxpayers also use 1257L (sometimes written with the Scottish 'S' prefix, e.g. S1257L). The PA amount is the same; only the income-tax bands above it differ.

All UK tax codes →

Sources & further reading

All figures and definitions on this page reflect the 2026/27 UK tax year and are cross-checked against HMRC guidance.

HMRC — What your tax code means (official meanings for L, BR, D0, D1, K, 0T, NT, M, N, S, C, T)
HMRC — Income Tax rates and Personal Allowance (2026/27 bands and thresholds)
HMRC — Emergency tax codes (W1, M1 and X suffixes)
HMRC — Rates and thresholds for employers 2026 to 2027
HMRC — Your Personal Tax Account (check your current code and how it was calculated)
Our methodology & calculation sources →