Marriage Allowance Calculator
The lower earner transfers £1,260 of personal allowance to a basic-rate-paying partner.
Result
Eligible?Yes
Annual saving£252.00
Backdated (up to 4 yrs)£1,008.00
Why not—
Marriage Allowance Calculator — FAQs
Can I backdate it?
Yes — up to 4 tax years if you were eligible. HMRC pays the backdated amount as a cheque — worth up to ~£1,000 total.
Who should apply?
The lower earner applies (gov.uk/marriage-allowance). It renews automatically each year until you cancel.
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