Marriage Allowance Calculator Guide 2025 — £252 Tax Saving

This page previously described eligibility as earning "£12,570–£13,570" — that band doesn't match how eligibility actually works. The lower earner's income must be below £12,570, full stop; there is no separate upper limit specific to the transferor.

Who can transfer, and who can receive

The transferring partner must have income below the £12,570 Personal Allowance — they do not need to have zero income, just less than the full allowance, since Marriage Allowance is about using up an allowance that would otherwise go unused.

The receiving partner must be a basic-rate taxpayer — broadly, income between £12,571 and £50,270 (2026/27) — before the transfer is applied. A higher-rate taxpayer cannot receive Marriage Allowance at all; the transfer is designed to help only within the basic-rate band.

Both a marriage and a civil partnership qualify equally.

How much, and how the saving arises

The transferable amount is £1,260 — 10% of the £12,570 Personal Allowance — moved from the lower earner's allowance to the higher earner's. Because the receiving partner is a basic-rate (20%) taxpayer, the saving is: £1,260 × 20% = £252 a year, the maximum available under the scheme.

Worked example

One partner earns £8,000 a year (well below the £12,570 Personal Allowance, using only £8,000 of it) and the other earns £35,000 (comfortably a basic-rate taxpayer).

• The lower earner transfers £1,260 of their unused allowance.
• The higher earner's Personal Allowance rises from £12,570 to £13,830.
• Extra income sheltered from 20% tax: £1,260 × 20% = £252 saved for the year.

The lower earner's own tax position is unaffected either way — because their income was already below £12,570 before the transfer, giving up £1,260 of allowance costs them nothing, since they were not going to use that portion of it regardless.

Backdating

A claim can be backdated up to four tax years, in addition to the current year — a couple who qualified for several years but never claimed can recover multiple years of the £252 saving (plus whatever the maximum was in each of those earlier years, since the underlying Personal Allowance figure has changed over time) in a single claim.

FAQ

Q: Does the lower-earning partner need to have zero income to qualify? A: No — they just need income below £12,570. Someone earning £10,000 or £8,000 can transfer the allowance just as validly as someone with no income at all.

Q: What happens if the higher earner becomes a higher-rate taxpayer partway through the year? A: Eligibility to receive Marriage Allowance requires being a basic-rate taxpayer for the tax year in question — check current guidance for how a mid-year change in circumstances is actually treated for that specific year, since it depends on the full-year position rather than a single month.

Q: Can I claim Marriage Allowance and Married Couple's Allowance at the same time? A: No — Marriage Allowance and Married Couple's Allowance (a separate, generally more valuable relief for couples where one partner was born before a specific cut-off date) cannot both be claimed for the same couple; they are alternatives, not additive.

Sources

Figures verified against HMRC guidance as of 30 July 2026:

• gov.uk — Marriage Allowance guidance (£12,570 Personal Allowance transferor threshold, basic- rate-taxpayer requirement for the recipient, £1,260 transferable amount, £252 maximum saving, four-year backdating)
• House of Commons Library — "Income tax allowances for married couples" (Marriage Allowance vs Married Couple's Allowance distinction)