Family tax2 min read · Updated 21 October 2026
Marriage Allowance: who can claim and what you save
How Marriage Allowance works, who qualifies, how much you save and how far back you can claim.
Who can claim
One of you earns under the Personal Allowance and the other pays tax at the basic rate. It does not apply if you are not married or in a civil partnership.
How to claim
The lower earner applies on GOV.UK. Check the page for the current rules and the backdating window.
Common questions
How much can I save?
Up to £252 a year in 2026/27.