2026/27 tax codes
Tax code 1383M explained
- 1383 means you can earn £13,830 a year before paying income tax.
- M means your partner transferred 10% of their Personal Allowance to you (Marriage Allowance).
How much tax 1383M takes
| Salary | Tax a year on 1383M | Tax a year on 1257L | Difference a month |
|---|---|---|---|
| £20,000 | £1,232 | £1,484 | −£21.00 |
| £30,000 | £3,232 | £3,484 | −£21.00 |
| £45,000 | £6,232 | £6,484 | −£21.00 |
| £60,000 | £10,924 | £11,428 | −£42.00 |
| £90,000 | £22,924 | £23,428 | −£42.00 |
Income tax through PAYE only, with no pension or benefits. Try your own salary with 1383M.
Check another code
Common questions
What does tax code 1383M mean?
1383 means you can earn £13,830 a year before paying income tax. M means your partner transferred 10% of their Personal Allowance to you (Marriage Allowance).
How much tax does 1383M take on £30,000?
On a £30,000 salary, code 1383M takes £3,232 of income tax a year through PAYE in 2026/27, compared with £3,484 on 1257L.
Is 1383M the right tax code for me?
Check your code in the HMRC app or your Personal Tax Account. If it does not match your situation, tell HMRC: overpaid tax is refunded and underpaid tax is usually collected through next year's code.
Official sources
Every rate and threshold on this page is checked against these official pages. How we calculate
- Tax codes (GOV.UK)
- Emergency tax codes (GOV.UK)
- PAYE Manual (HMRC)
- Check your Income Tax for the current year (HMRC)
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