UK PAYROLL July 2026 · 6 min read · By Derya Köse

Tax Code 1257L Explained (2026/27): What It Means for Your UK Payslip

💡 Key Takeaways & Summary

Statutory payroll deductions, progressive tax bands, and national contributions directly determine your take-home pay.
Pre-tax contributions like workplace pensions and salary sacrifice schemes significantly reduce overall tax liability.
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If you look at your UK payslip or P60, chances are you see the code 1257L. It is the most common tax code in the UK — but what does it actually mean for your monthly take-home pay?

Tax code 1257L explained UK payslip breakdown — Visual breakdown of UK tax code 1257L personal allowance tax-free threshold.

What does 1257L actually stand for?

The code breaks down into two distinct parts:

1257: Multiply this number by 10 to get your standard tax-free Personal Allowance — £12,570 per tax year.
L: Indicates that you are entitled to the standard tax-free personal allowance for a single job or pension.

What does 1257L mean for your monthly paycheck?

Under tax code 1257L, HMRC divides your £12,570 annual personal allowance equally across the tax year:

Monthly paid: First £1,047.50 of income each month is 100% tax-free.
Weekly paid: First £241.73 of income each week is tax-free.

What is 1257L W1 or 1257L M1?

If your payslip says 1257L W1 (Week 1) or 1257L M1 (Month 1), you are on an emergency tax code. This means HMRC calculates your tax purely on that single pay period without looking at your previous earnings in the tax year. It often happens when switching jobs or starting your first job.

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