The 1257L Tax Code Explained.
Everything you need to know about what 1257L means for your payslip, your personal allowance, and your take-home pay in 2026/27.
Quick Definition
Standard — full personal allowance. This is the standard UK tax code for 2026/27. You receive the full Personal Allowance of £12,570, meaning the first £12,570 you earn this year is completely tax-free. You then pay 20% (Basic Rate) on income up to £50,270, 40% (Higher Rate) between £50,270 and £125,140, and 45% (Additional Rate) above £125,140. This code is correct for most UK employees with one job, no untaxed income, and no benefits in kind.
How much tax will I pay on 1257L?
Use the interactive tool below to see how the 1257L tax code impacts different salary levels. This calculation includes Income Tax and National Insurance for the 2026/27 tax year.
How 1257L 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 1257L tax code right for me?
Tax codes are assigned by HMRC based on your reported income and circumstances. You might be on 1257L 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.
How does the 1257L tax code affect my take-home pay?
The 1257L tax code gives you a £12,570 personal allowance. This means the first £12,570 you earn each year is completely tax-free. Any income above this is taxed according to the standard UK tax bands. For example, if you earn £25,000, you only pay income tax on £12,430 of it.
Why did HMRC give me the 1257L tax code?
There are three main reasons HMRC issues the 1257L code. First, if you have started a new job and your P45 was processed successfully without any outstanding underpayments. Second, it is the standard default code assigned automatically at the start of a new tax year if your circumstances haven't changed. Third, HMRC has not detected any special circumstances like company cars, medical insurance, or untaxed income that would require adjusting your allowance.
What does the number 1257 mean in my tax code?
The number 1257 represents the £12,570 personal allowance. HMRC's system simply removes the last digit of your allowance amount. So £12,570 becomes 1257. If you had an allowance of £13,000 due to claiming uniform expenses, your number would be 1300.
What does the L mean in 1257L?
The letter L indicates you are entitled to the standard tax-free personal allowance. Other common suffixes you might see over your career include M (which means you've received a transfer of 10% of your partner's personal allowance via the Marriage Allowance), N (meaning you transferred 10% of your allowance to your partner), and T (meaning HMRC needs to review other calculations before assigning your code).
How is 1257L different from other UK tax codes?
While 1257L gives you a tax-free allowance, many other codes do not. For example, a BR code gives no allowance at all, taxing everything at a flat 20% basic rate. The 0T code also gives no allowance but applies graduated rates (20%, 40%, 45%) based on your earnings. D0 means all your income from that job is taxed directly at 40%.
What to do if you think your 1257L code is wrong
First, carefully check your latest payslip to confirm 1257L is currently active. Next, log into your Personal Tax Account on the HMRC website at tax.service.gov.uk to see how they calculated it. If you still believe it's incorrect because you have untaxed income or have changed jobs, you must contact HMRC directly on 0300 200 3300. You can read our full guide on how to fix a wrong tax code here.
Frequently asked questions about the 1257L tax code
What does the 1257L tax code mean?
The 1257L tax code means you have the standard personal allowance of £12,570 for 2026/27. The first £12,570 you earn is tax-free. You pay 20% on income up to £50,270, 40% up to £125,140, and 45% above that.
Who gets the 1257L tax code?
Most UK employees with one job, no untaxed income, and no benefits in kind receive the 1257L tax code. It is the most common tax code in the UK for 2026/27.
Is 1257L the correct tax code for me?
If this is your only job, you have no benefits in kind, and no untaxed income, then yes — 1257L is almost certainly correct. If you have multiple jobs or receive benefits like a company car, your code may differ.
What happens if my tax code changes from 1257L?
If your code changes from 1257L, your take-home pay will change. A lower number means less personal allowance and more tax. A code like BR or 0T means no personal allowance at all. Contact HMRC if you think your code is wrong.
How much tax do I pay with the 1257L code on a £35,000 salary?
On a £35,000 salary with a 1257L tax code in 2026/27, you pay approximately £4,486 in income tax per year (£374 per month). This leaves you with a basic take-home of around £2,393 per month before pension or student loan deductions.
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.