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Marriage Allowance UK - How to Claim Up to £1,260 Back from HMRC in 2025/26
Quick Summary: Around 2.4 million couples in the UK are eligible for Marriage Allowance but have never claimed it. If one partner earns under £12,570 and the other pays basic-rate income tax, you can get up to £252/year tax back — and backdate up to four years for a lump sum of up to £1,008. It takes 10 minutes, it’s free, and it renews automatically. Here’s everything you need to know.
Table of Contents
- What Is Marriage Allowance?
- Exactly Who Qualifies — and Who Doesn’t
- How Much Is It Worth? Full Breakdown
- How Marriage Allowance Works: The Mechanics
- How to Apply: Step-by-Step
- Backdating: Claiming Up to 4 Previous Years
- What Happens to Your Tax Codes
- Special Cases: Pensioners, Self-Employed, Scotland
- When to Cancel Marriage Allowance
- Marriage Allowance vs Married Couple’s Allowance
- Common Mistakes and How to Avoid Them
- Frequently Asked Questions
1. What Is Marriage Allowance? {#what-is}
Marriage Allowance is a UK tax relief that allows the lower-earning partner in a marriage or civil partnership to transfer 10% of their personal allowance — currently £1,260 — to their higher-earning partner. Because the recipient pays 20% income tax on income in the basic-rate band, this transfer reduces their annual tax bill by £252.
It was introduced in April 2015. A decade later, HMRC estimates that around 2.4 million eligible couples have still never claimed it — meaning the average unclaimed couple has left £2,520 on the table over ten years.
┌──────────────────────────────────────────────────────────────────┐│ MARRIAGE ALLOWANCE AT A GLANCE ││ ││ Allowance transferred: £1,260 (10% of £12,570) ││ Annual tax saving: £252 (£1,260 × 20%) ││ Monthly saving: £21/month ││ Backdated value (4 years): Up to £1,008 lump sum ││ Total 5-year value: Up to £1,260 ││ Cost to apply: Free ││ Time to apply: 10 minutes ││ Does it auto-renew? Yes — no need to reapply ││ Eligible couples (estimate): 4+ million ││ Currently unclaimed: ~2.4 million couples │└──────────────────────────────────────────────────────────────────┘
💡 Related reading: UK Tax Codes Explained: M and N Codes · Am I Owed an HMRC Tax Refund?
2. Exactly Who Qualifies — and Who Doesn’t {#eligibility}
Marriage Allowance has clear, specific eligibility rules. All of the following must apply:
The lower-earning partner (the one transferring the allowance) must:
- Be married or in a civil partnership (not just cohabiting)
- Have income at or below £12,570 for the tax year (the personal allowance)
- Be born after 5 April 1935 (if born before, a different relief applies — Married Couple’s Allowance)
- Not pay income tax, or earn less than the personal allowance
The higher-earning partner (the one receiving the allowance) must:
- Be a basic-rate taxpayer — income between £12,571 and £50,270 (England/Wales/NI)
- Not be a higher-rate or additional-rate taxpayer
- Be in the same marriage or civil partnership
┌──────────────────────────────────────────────────────────────────┐│ MARRIAGE ALLOWANCE ELIGIBILITY MATRIX ││ ││ Scenario Eligible? ││ ────────────────────────────────────────────────────────────── ││ Partner A earns £8,000, Partner B earns £35,000 ✅ Yes ││ Partner A earns £0, Partner B earns £28,000 ✅ Yes ││ Partner A earns £12,000, Partner B earns £45,000 ✅ Yes ││ Partner A earns £14,000, Partner B earns £35,000 ❌ No (A over limit) ││ Partner A earns £8,000, Partner B earns £55,000 ❌ No (B higher rate) ││ Unmarried couple, both £20,000 ❌ No (not married) ││ Both partners earn £25,000 ❌ No (neither unused) ││ Partner A earns £12,570, Partner B earns £30,000 ✅ Yes (at limit) │└──────────────────────────────────────────────────────────────────┘
Key exclusions:
- Unmarried couples — however long you’ve been together, if you’re not married or in a civil partnership, you cannot claim
- Higher-rate recipients — if the higher earner’s income exceeds £50,270 (or the Scottish higher-rate threshold), they’re ineligible to receive Marriage Allowance
- Both earning above £12,570 — if both partners use their full personal allowance, there’s nothing unused to transfer
- Born before 6 April 1935 — you may qualify for Married Couple’s Allowance instead (see section 10)
3. How Much Is It Worth? Full Breakdown {#worth}
┌──────────────────────────────────────────────────────────────────┐│ MARRIAGE ALLOWANCE VALUE: 2025/26 ││ ││ Current year saving: £252 (via tax code change) ││ ││ Backdated claims (lump sum, paid by HMRC directly): ││ 2024/25: £252 ││ 2023/24: £252 ││ 2022/23: £252 ││ ───────────────────────────────────────────────── ││ Total backdated lump sum: £756 ││ Plus current year: £252 (via code, not lump sum) ││ TOTAL first-time claim: £1,008 (lump) + code going forward ││ ││ Note: 2021/22 window closed 5 April 2026 ││ From April 2026, earliest backdatable year is 2022/23 ││ ││ 10-year cumulative value if claimed from 2025/26: £2,520 │└──────────────────────────────────────────────────────────────────┘
The £252 annual saving: Is it worth it?
Some people dismiss £252 as small. Consider:
- It’s £252 for 10 minutes of online form-filling
- It renews automatically every year — zero ongoing effort
- The backdated lump sum can be over £1,000
- Over a 20-year retirement, the cumulative saving is £5,040
- It costs nothing and requires no ongoing management
The only question is whether you’re eligible. If you are, there is no logical reason not to claim.
4. How Marriage Allowance Works: The Mechanics {#mechanics}
Understanding the mechanics helps you avoid the common mistakes.
What actually happens:
The lower-earning partner (the “transferor”) gives up £1,260 of their personal allowance. Their own personal allowance drops from £12,570 to £11,310.
The higher-earning partner (the “recipient”) receives a tax reducer (not an increased allowance) of £252. This is a direct reduction of their tax bill.
┌──────────────────────────────────────────────────────────────────┐│ MARRIAGE ALLOWANCE MECHANICS: WORKED EXAMPLE ││ ││ WITHOUT Marriage Allowance: ││ Partner A (earns £7,000): No tax (below £12,570 allowance) ││ Unused allowance: £5,570 — wasted ││ Partner B (earns £38,000): Tax on £25,430 = £5,086 ││ ││ WITH Marriage Allowance: ││ Partner A transfers £1,260 of unused allowance to B ││ Partner A: allowance drops to £11,310 → still no tax paid ││ (earnings £7,000 still well below £11,310) ││ Partner B: receives £252 tax reducer → tax = £5,086 - £252 ││ = £4,834 ││ ││ Couple's combined annual saving: £252 ✓ ││ Cost to Partner A: £0 (they weren't using that £1,260) │└──────────────────────────────────────────────────────────────────┘
The critical point: The transfer only makes sense when the lower-earning partner is genuinely not using that portion of their allowance. If they earn under £11,310, the transfer costs them nothing. If they earn between £11,310 and £12,570, they’ll start paying a tiny amount of tax on the £1,260 transferred — but the higher earner’s £252 saving will still outweigh this cost in most cases.
5. How to Apply: Step-by-Step {#how-to-apply}
Who applies: The lower-earning partner makes the application — the one transferring their allowance. You cannot apply on behalf of your partner, and your partner cannot apply on your behalf.
What you need before you start:
- Your own National Insurance number
- Your partner’s National Insurance number
- Access to Government Gateway (or ability to create an account)
- Approximately 10 minutes
Online application (fastest — current year only):
- Go to gov.uk/apply-marriage-allowance
- Click “Apply online”
- Sign in to Government Gateway (or create an account)
- Confirm your identity
- Enter your partner’s NI number
- Confirm you meet the eligibility criteria
- Submit
HMRC will confirm by email. They then update both tax codes — usually within 2–8 weeks. The higher-earning partner’s code will change to include the M suffix (e.g., 1383M). The lower-earning partner’s code will change to include the N suffix (e.g., 1131N).
To backdate as well (recommended for first-time claimants):
If you want to claim both current year AND previous years simultaneously, apply by post using the MATCF form (Marriage Allowance Transfer Claim Form). This is more efficient than applying online for the current year and separately by post for previous years.
Download the MATCF at gov.uk/government/publications/income-tax-marriage-allowance-matcf. Fill in all applicable years and post to: HMRC, Pay As You Earn and Self Assessment, BX9 1AS.
6. Backdating: Claiming Up to 4 Previous Years {#backdating}
You can backdate your claim to any tax year from 2022/23 onwards (as of 2025/26 — the 2021/22 window closed on 5 April 2026).
For each backdated year, HMRC checks you were eligible in that year — both partners must have met the eligibility criteria in the year claimed.
Backdated refunds are paid as a lump sum — either by cheque or bank transfer, separate from your normal tax affairs. The current year’s saving is applied through tax code change.
┌──────────────────────────────────────────────────────────────────┐│ BACKDATING CHECKLIST ││ ││ For EACH backdated year, confirm: ││ ☐ You were married/civil partners in that year ││ ☐ The lower earner's income was under £12,570 in that year ││ ☐ The higher earner was a basic-rate taxpayer in that year ││ ☐ Neither partner was an additional-rate taxpayer ││ ☐ Both partners were born after 5 April 1935 ││ ││ Years you can backdate from 2025/26: ││ 2022/23 → 2023/24 → 2024/25 + current 2025/26 ││ ││ Note: If either partner earned above £50,270 in any year, ││ that year is NOT eligible for backdating │└──────────────────────────────────────────────────────────────────┘
HMRC will write to you to confirm each backdated year has been agreed. Processing backdated claims typically takes 4–8 weeks.
Warning: Do NOT use a paid claims company for this. Several companies charge 25–40% of your refund to make this claim for you. Since HMRC’s MATCF form is straightforward and freely available, using these services costs hundreds of pounds unnecessarily.
7. What Happens to Your Tax Codes {#tax-codes}
Once your application is approved:
The receiving partner (higher earner):
- Code changes to include M suffix
- Code number increases by 126 (representing £1,260 transferred)
- Example: 1257L becomes 1383M
- Monthly take-home increases by approximately £21
The giving partner (lower earner):
- Code changes to include N suffix
- Code number decreases by 126
- Example: 1257L becomes 1131N
- Monthly take-home decreases marginally (if they’re even in PAYE)
Important: If you’re not in employment or PAYE (e.g., both retired), the giving partner’s code change may not affect your take-home at all (since they pay no tax anyway). The receiving partner’s relief is given through their pension PAYE code or, if they’re self-employed, through their Self Assessment return.
For the full guide to how M and N codes work on payslips, see UK Tax Codes Explained.
8. Special Cases: Pensioners, Self-Employed, Scotland {#special-cases}
Pensioners
Marriage Allowance is particularly valuable for retired couples where one partner has a modest pension. Many pensioners assume the allowance doesn’t apply to them — it does.
Typical pensioner scenario:
- Partner A: state pension only £9,500/year → under £12,570, can transfer
- Partner B: state pension + private pension = £22,000/year → basic-rate taxpayer, can receive
- Annual saving: £252/year
- Backdated lump sum if never claimed: up to £1,008
If Partner B’s pension income has risen above £50,270 since retiring, however, check eligibility carefully.
Self-Employed
If the lower-earning partner is self-employed, their income for Marriage Allowance purposes is their net profit (after expenses), not their turnover. If your net profit is under £12,570, you qualify.
The higher-earning partner’s savings are applied via:
- Their PAYE tax code (if employed), or
- A reduction in their Self Assessment tax bill (if self-employed)
Scotland
Scottish taxpayers can claim Marriage Allowance but with an important restriction: the recipient must not be a Scottish higher-rate taxpayer. The Scottish higher rate (42%) begins at taxable income above £31,092 — significantly lower than the rUK threshold of £50,270. A Scottish couple where one earns £42,000 might not be eligible, whereas in England they would be.
The saving for Scottish recipients is still calculated at the UK basic-rate band (20%), not Scottish intermediate or higher rates, regardless of which band the recipient falls into.
9. When to Cancel Marriage Allowance {#cancel}
Marriage Allowance continues automatically each year until you cancel it or your circumstances change. You must cancel if:
- The higher earner’s income rises above £50,270 — they become a higher-rate taxpayer. If you don’t cancel, the lower earner continues to have a reduced allowance but the higher earner is no longer entitled to receive it — creating a net tax disadvantage.
- The lower earner’s income rises above £12,570 — they now use their full personal allowance. The transfer becomes disadvantageous.
- You separate or divorce — Marriage Allowance is cancelled automatically when a decree absolute or final order is granted. Informal separation doesn’t automatically cancel it (you can continue to claim if still legally married, but either partner can request cancellation).
- One partner dies — the Marriage Allowance automatically ends.
How to cancel:
- Online: Log into HMRC Personal Tax Account → Marriage Allowance → Cancel
- Phone: 0300 200 3300
Cancellation takes effect from the end of the current tax year. So if you cancel in August 2025, it ends from 5 April 2026.
The risk of not cancelling: If the higher earner’s income rises into the higher-rate band while Marriage Allowance is still active, the lower earner has unnecessarily given up £1,260 of allowance with no benefit. HMRC may or may not catch this automatically. Check your circumstances at each tax year start.
10. Marriage Allowance vs Married Couple’s Allowance {#vs-mca}
These are two completely different reliefs, often confused:
┌──────────────────────────────────────────────────────────────────┐│ MARRIAGE ALLOWANCE vs MARRIED COUPLE'S ALLOWANCE ││ ││ Feature Marriage Allowance Married Couple's Allow. ││ ────────────────────────────────────────────────────────────── ││ Introduced 2015 Pre-1990 ││ Who qualifies Born after Apr 1935 Born before Apr 1935 ││ Annual value Up to £252 Up to £1,037 (2025/26) ││ Income limit Recipient: basic No income limit for ││ rate only recipient ││ Means tested? Yes (basic rate) No ││ How given Tax reducer Tax reducer ││ Apply via gov.uk online Self Assessment/HMRC ││ Both working? Required one < PA Not required │└──────────────────────────────────────────────────────────────────┘
Married Couple’s Allowance is significantly more valuable (up to £1,037/year) but only available to couples where at least one partner was born before 6 April 1935. If this applies to you, claim Married Couple’s Allowance, not Marriage Allowance.
11. Common Mistakes and How to Avoid Them {#mistakes}
Mistake 1: Applying when the higher earner is actually higher-rate
If the higher-earning partner earns above £50,270, you cannot claim. Check your total income carefully — HMRC will reject the application if ineligible, but some people apply anyway and create confusion.
Mistake 2: Forgetting to cancel when circumstances change
If the lower earner goes back to work and earns above £12,570, or the higher earner gets a promotion above £50,270, the allowance must be cancelled manually. HMRC does not always catch this automatically.
Mistake 3: Using a paid refund company
Companies charge 25–45% of your refund to make this free 10-minute claim for you. One company charged £200 for a £252 annual saving. Never use them for Marriage Allowance.
Mistake 4: Assuming you can’t claim if both partners are working
Both partners can work and you can still claim — as long as the lower earner’s income is below £12,570. Many part-time workers, term-time workers, and seasonal workers fall into this category.
Mistake 5: Claiming when the lower earner earns more than they think
If the lower earner has savings interest, rental income, or other untaxed income that pushes them above £12,570, they may not be eligible. Total income from all sources counts — not just employment income.
12. Frequently Asked Questions {#faq}
Do I need to reapply every year?
No. Once approved, your Marriage Allowance continues automatically each year until you cancel it or your circumstances change. No annual reapplication required.
Can I claim if my partner is self-employed?
Yes. Self-employment income counts for both eligibility tests. Use net profit (after expenses) for the lower earner’s income threshold, and taxable profit for the higher earner’s band assessment.
What if my partner died? Can I still claim backdated Marriage Allowance?
Yes. HMRC allows claims for backdated years where a deceased partner was eligible. Contact HMRC directly to make this type of claim, as the online system may not accommodate it.
I claimed Marriage Allowance — when will my tax code change?
Usually within 2–8 weeks of a successful application. Your employer applies the new code from their next available pay run after receiving the coding notice from HMRC.
My partner earns exactly £12,570. Can we still claim?
Yes — a partner earning exactly £12,570 can still transfer £1,260 of their allowance. Their allowance will drop to £11,310, meaning they’ll pay a small amount of tax on the difference. The higher earner’s £252 saving will still exceed this small cost in most cases. Calculate both to confirm it’s worthwhile.
Is Marriage Allowance the same as the Marriage Tax Allowance?
Yes — “Marriage Tax Allowance” and “Marriage Allowance” refer to the same relief. It’s also sometimes called the “transferable tax allowance”. All the same thing.
Marriage Allowance Quick Reference
┌──────────────────────────────────────────────────────────────────┐│ MARRIAGE ALLOWANCE QUICK REFERENCE ││ ││ Annual saving: £252 (basic rate on £1,260) ││ Backdated lump sum: Up to £1,008 (3 previous years) ││ Eligibility: Lower earner under £12,570 ││ Higher earner basic rate (max £50,270) ││ Apply: gov.uk/apply-marriage-allowance ││ Post form (backdate): MATCF form, post to HMRC PAYE BX9 1AS ││ Time to apply: 10 minutes ││ Cost: Free (never use a paid service) ││ Auto-renews? Yes — no annual reapplication ││ Cancel when: Higher earner goes above £50,270 ││ Lower earner goes above £12,570 ││ HMRC helpline: 0300 200 3300 │└──────────────────────────────────────────────────────────────────┘
Information correct as of May 2026. Always verify at gov.uk. This article does not constitute personal tax advice.
Internal Links:
- UK Tax Codes Explained: M and N Codes
- Am I Owed an HMRC Tax Refund?
- HMRC Savings
- How to File Self Assessment 2025/26
- HMRC Penalties: How They Work and How to Appeal
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