Marriage Allowance is technically still claimable for the tax year in which a marriage ends. Decree absolute (not decree nisi or separation) marks the formal end — the allowance continues until the end of that tax year. Death of a spouse cancels future claims but allows backdated claims for prior years. Cohabiting unmarried partners cannot claim Marriage Allowance at all — even after years together. The lower-earning spouse can withdraw the claim at any time via the HMRC online portal.
What triggers cancellation
Three events end Marriage Allowance eligibility:
- Decree absolute (divorce) or dissolution (civil partnership). The marriage is legally over. Allowance continues until the end of that tax year.
- Death of either spouse. Allowance stops at the date of death. The surviving spouse can still claim backdated allowance for prior years they were eligible.
- Either spouse becoming higher-rate. Allowance cancels automatically for that tax year — HMRC reconciles via tax codes.
Separation (without divorce) does NOT cancel the allowance. If you're separated but still legally married, the allowance can technically still be claimed — though it may no longer be appropriate.
Mid-year divorce
If decree absolute is granted mid-tax-year, the Marriage Allowance applies for the FULL tax year. There's no apportionment — you get the full £252 worth even if the marriage only lasted a few months of that year.
From the start of the next tax year (6 April), the allowance no longer applies. HMRC updates tax codes automatically once notified of the divorce.
Death of a spouse
The rules are favourable to the surviving spouse:
- For the tax year of death: Marriage Allowance still applies. HMRC continues to apply the relief for the deceased spouse's tax year up to the date of death; the survivor gets the full £252 worth.
- For prior tax years (up to 4 years back): Retrospective claims can be made. The deceased's estate or the surviving spouse can apply. Refunds are paid to the deceased's estate.
- From the next tax year onwards: No more Marriage Allowance — the survivor is no longer married. They can, however, claim Married Couple's Allowance if one of them was born before 6 April 1935 (rare now).
Cohabitation — not eligible
Marriage Allowance is strictly for married couples and civil partners. Long-term cohabiting partners — even with shared finances, joint mortgages, and decades together — do NOT qualify. This is a frequent surprise for people in long-term partnerships.
If you're cohabiting and one earns below PA, the £252/year of tax saving is unavailable unless you formalise the relationship via marriage or civil partnership.
The "permanently separated" question
Some couples don't divorce — they're "permanently separated" but never apply for decree absolute. Marriage Allowance status here is technical:
- HMRC perspective: If you're still legally married (no decree absolute), you can technically still claim Marriage Allowance. The transfer of £1,260 of PA is procedural.
- Practical consideration: If you're not sharing finances, the £252/year benefit usually accrues to one spouse only. That spouse may not pass it on to the other.
- HICBC complication: If you're "permanently separated under circumstances likely to be permanent," HMRC treats you as not a couple for HICBC. But Marriage Allowance has no equivalent "permanent separation" exception — you remain eligible until divorce.
What about the backdated refunds
If you backdate a claim for years you were married but are now divorced:
- The refund goes to the higher-earner spouse (who originally paid the tax).
- If the relationship is amicable, they may share — but there's no statutory requirement to.
- If the divorce financial settlement specifically addressed Marriage Allowance refunds, that controls.
- If the lower earner made the claim post-divorce: still valid. The refund still goes to the higher-earner.
How to formally cancel
The lower-earning spouse can cancel the Marriage Allowance via the HMRC online portal (gov.uk/marriage-allowance). Effective from the next tax year — current year remains in place.
If the higher-earning spouse wants the allowance cancelled (e.g. they've become higher-rate or are getting divorced), they can request via HMRC self-service. Cancellation takes effect from the next tax year.
Sources and methodology
Marriage Allowance rules are in section 55B of the Income Tax Act 2007. Marriage termination definitions follow the Matrimonial Causes Act 1973. See HMRC's Marriage Allowance guidance. For a personalised check, see the checker. The methodology page documents sources.
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