Skip to main content
PaySlipIQ

Compare UK Tax Codes

Pick any two UK PAYE tax codes and we will line up the allowance, emergency status, region and approximate annual tax on a £30,000 salary so you can see exactly how they differ.

Last updated 2026-04-12

Illustration: £30,000 gross / year
Attribute1257L1257M
CategoryStandardMarriage
RegionrUKrUK
Allowance£12,570£13,830
Emergency / non-cumulativeNoNo
Approx. annual tax on £30k£3,486£3,234
In one sentenceStandard personal allowance of £12,570 for England, Wales and NI.Marriage Allowance recipient — allowance increased by £1,260.

Bottom line on £30k

On a £30,000 salary, 1257L deducts roughly £3,486 in income tax per year vs £3,234 for 1257M. That is a difference of £252 per year — 1257L is more expensive.

Want a real check, not just a comparison?

Upload your payslip and we will tell you whether the code being applied is correct for the pay you actually received.

Check My Payslip