Can you claim the marriage allowance?

In a recent news story published on the GOV.UK website, HMRC confirmed that nearly 1.8 million married couples and those in civil partnerships are claiming the Marriage Allowance to save up to £252 a year in Income Tax.
The allowance enables married couples or those in civil partnerships to share their personal tax allowances if one partner earns an income under their Personal Allowance threshold of £12,570 and the other is a basic rate taxpayer.
They can transfer 10% of their tax-free allowance to their partner, which is £1,260 in the 2021-22 tax year. It means couples can reduce the tax they pay by up to £252 a year. Couples can also backdate their claims for any of the four previous tax years, which could be worth up to £1,220.
If you are eligible, and still not making a claim, you can complete an application online at https://www.gov.uk/apply-marriage-allowance.