Wage1383M Tax Code — What It Means
Marriage Allowance: you have received a transfer of a tenth of your partner's Personal Allowance, so your tax-free amount is larger than the standard code.
How 1383M changes your pay on a £30,000 salary
| Code | Income tax / year | Per month | Take-home / month* |
|---|---|---|---|
| Standard 1257L | £3,486 | £291 | £2,210 |
| 1383M | £3,234 | £270 | £2,231 |
*Take-home per month here reflects income tax only; National Insurance and any student loan or pension are separate.
Why you might have the 1383M code
- Your partner earns below the Personal Allowance and has transferred part of theirs to you.
- You are the higher-earning partner in a couple claiming Marriage Allowance.
- You both applied for Marriage Allowance and HMRC updated your code.
How to fix a wrong code
If your circumstances change - for example a separation or a large change in income - tell HMRC, as Marriage Allowance may no longer apply.
Related codes: 1131N · 1257L · S1257L · All tax codes
General information, not advice. Estimates assume the standard 1257L tax code and typical circumstances; your payslip may differ by a pound or two because HMRC payroll software truncates at each step. Verify with HMRC or an accountant for any decision. WageReckon stores no salary data - the calculators run in your browser.
Rates for the 2026-27 tax year, current as of 24 July 2026. Source: HMRC (gov.uk). Contains public sector information licensed under the Open Government Licence v3.0. Source: HMRC / gov.uk. See how we calculate.