Marriage Allowance: How to Claim Up to £1,259 Back
Learning marriage allowance how to claim takes about ten minutes and can put £252 a year back in your pocket: the lower-earning partner transfers £1,260 of their unused Personal Allowance to the other, cutting the higher earner’s tax bill. Claims can be backdated four years, so a first application can be worth up to £1,259.
Yet millions of eligible couples never apply — mostly because they assume it’s complicated or only for newlyweds. Neither is true. You can claim after decades of marriage, and the whole thing happens online through HMRC.
Who Qualifies? The Two Income Tests
Two conditions decide everything. First, one partner must earn less than the Personal Allowance — £12,570 a year — so they pay little or no income tax. That includes people working part-time, on career breaks, retired on a small pension, or not working at all.
Second, the other partner must be a basic-rate taxpayer: earning between £12,571 and £50,270 a year in England, Wales or Northern Ireland. (Scotland has different bands — the earner must pay at the starter, basic or intermediate rate.) If the higher earner pays 40% tax, you don’t qualify, because the allowance is designed to help couples on ordinary incomes. You also need to be married or in a civil partnership — living together isn’t enough, however long it’s been.
How to Claim, Step by Step
- The lower earner applies. This is the step couples get backwards. The person with the unused allowance makes the claim, not the taxpayer who benefits.
- Gather two details: both partners’ National Insurance numbers, plus ID for the applicant (passport, driving licence or payslip details).
- Apply on GOV.UK. Search “marriage allowance” on gov.uk and follow the application. It takes around 10 minutes.
- HMRC adjusts both tax codes. The recipient’s code gains an “M” suffix, the transferor’s gains an “N”, and the saving arrives through the payslip.
- Tick the backdating box. You can claim for the current year plus the previous four tax years if you were eligible then — that’s where the £1,259 figure comes from.
That’s the whole process — marriage allowance how to claim, start to finish, with no forms to post and no fee to pay.
The Backdating Maths
The allowance is worth £252 in a typical year (20% tax on £1,260 transferred). Claim the current year plus four previous years and the cheques add up: earlier years were worth slightly less, giving a maximum combined payout of £1,259. Backdated amounts arrive as a cheque or bank payment rather than through your tax code, usually within a few weeks of approval. One caution: the four-year window rolls forward every April, so a year of eligibility quietly expires if you keep putting it off.
Never Pay a Claims Company to Do This
Search for marriage allowance help and you’ll find slick websites offering to claim “for you” — for 30–42% of your refund, sometimes plus VAT. Some also ask you to sign a deed of assignment that hands them your tax refunds for other years too. The official claim is free, takes ten minutes, and keeps every penny with you. If a site isn’t gov.uk, close the tab.
When to Cancel or Update HMRC
The claim rolls on automatically each year, but life changes can make it wrong. Tell HMRC if you divorce or dissolve the partnership, if the lower earner’s income rises above £12,570, or if the higher earner moves into the 40% band. If a partner dies, the surviving partner should contact HMRC — the allowance can sometimes continue for the rest of that tax year. Forgetting to cancel can leave the higher earner underpaying tax, which HMRC will claw back later.
The Bottom Line
If one of you earns under £12,570 and the other is a basic-rate taxpayer, this is the closest thing to free money the tax system offers. Ten minutes, one form, £252 a year — and up to £1,259 if you’re claiming for the first time.
FAQs
Marriage allowance: how to claim if one partner has died?
If your partner has died, you can still claim marriage allowance for the years you were eligible, and the surviving partner may receive the allowance for the year of death. Contact HMRC’s bereavement team with both National Insurance numbers; backdated claims covering up to four previous tax years remain possible after a partner’s death.
How much is marriage allowance worth in 2026/27?
Marriage allowance how to claim comes down to one figure: the allowance is worth up to £252 in 2026/27, because the lower earner transfers £1,260 of Personal Allowance and the recipient saves 20% tax on that amount. Claiming the current year plus four backdated years produces a maximum total payout of £1,259.
Can pensioners claim marriage allowance?
Yes, pensioners can claim marriage allowance if one partner’s total income, including the State Pension, is below £12,570 and the other pays basic-rate tax. Couples born before 6 April 1935 may instead qualify for the older Married Couple’s Allowance, which can be worth more and should be checked first.
Does marriage allowance affect benefits or tax credits?
Marriage allowance does not reduce Universal Credit, tax credits or other benefits, because it changes your income tax code rather than your income. The transfer can slightly raise the lower earner’s own tax bill only if their income later rises above their reduced Personal Allowance of £11,310.
How long does a marriage allowance claim take to process?
An online marriage allowance claim on GOV.UK usually updates both tax codes within a few weeks, and the saving then flows through the higher earner’s payslip. Backdated amounts for previous years are normally paid by cheque or bank transfer within several weeks of HMRC approving the claim.
