Marriage Allowance: The Free £252 Most Couples M

Of all the tax breaks available in the UK, marriage allowance is the one that annoys me most. Not because it exists, but because of how many couples don’t claim it. HMRC’s own figures show that over 2 million eligible couples are leaving this money unclaimed every single year. It’s free. It takes five minutes. And yet people just don’t do it.

Let me fix that.

What marriage allowance is

Marriage allowance lets one spouse or civil partner transfer £1,260 of their personal allowance to the other. The person transferring must earn less than £12,570 (so they’re not using their full personal allowance). The person receiving the transfer must be a basic rate taxpayer (earning between £12,571 and £50,270).

The recipient gets a £1,260 boost to their personal allowance, reducing their tax bill by £252 per year (£1,260 at 20%).

That’s it. No catch. No complicated forms. Just £252 a year that HMRC will happily give you if you ask.

Who qualifies

You can claim if all of the following apply:

You’re married or in a civil partnership
One of you earns less than £12,570 (or has no income at all)
The other earns between £12,571 and £50,270 (basic rate taxpayer)
You both live in England, Wales, or Northern Ireland (Scotland has its own version with the same value)

Common situations where this applies:

One partner is a stay-at-home parent while the other works
One partner works part-time and earns below the personal allowance
One partner is retired with a small pension while the other still works
One partner is studying full-time with minimal income

If the higher earner pays tax at the higher or additional rate (income above £50,270), you can’t claim marriage allowance. But you can still use other tax planning strategies to reduce your bill.

How to claim (5 minutes, seriously)

Go to gov.uk/marriage-allowance. The lower earner applies to transfer their allowance. You’ll need:

Your National Insurance number
Your partner’s National Insurance number
A form of ID (passport, P60, or a recent payslip)

The transfer stays in place automatically each year until you cancel it. You don’t need to reapply.

If the higher earner is employed, their tax code will be adjusted and they’ll see the benefit in their monthly pay. If they’re self-employed, the reduction is applied through their self-assessment return.

Backdate it for up to £1,260

Here’s where it gets even better. You can backdate your claim for four previous tax years. If you were eligible in 2022/23, 2023/24, 2024/25, and 2025/26 but never claimed, you can get all four years’ worth in a lump sum.

That’s up to £1,260 landing in your bank account, on top of the ongoing £252 per year. For most couples, that’s a genuinely useful amount of money for filling in a form that takes less time than making a cup of tea.

The backdated amount is paid as a cheque or direct payment to the higher earner. It usually arrives within a few weeks.

When it doesn’t apply

Marriage allowance won’t help if:

Both partners earn above £12,570. You’re both using your full personal allowances, so there’s nothing spare to transfer.
The higher earner pays higher rate tax. The transfer is only available to basic rate taxpayers.
You’re not married or in a civil partnership. Cohabiting couples don’t qualify, regardless of how long you’ve been together.
You’re separated. You can still claim if you’re married but separated, as long as you meet the income criteria. But if the relationship has broken down, you might not want to.

The simplest free money going

I’ve written about salary sacrifice, pension tax relief, and ISA strategies. They’re all worthwhile. But they all require decisions about contributions, risk, and timing.

Marriage allowance requires one form and five minutes. There’s no risk, no trade-off, and no downside. If you qualify and you haven’t claimed, you’re handing HMRC money they’re willing to give back. Make sense?

Go do it today. Literally right now. Then come back and read the rest of the site.

Marriage Allowance: The Free £252 Most Couples Miss