More than two million married couples and civil partners in the UK are missing out on a tax break that could put up to £1,260 ($1,670) back in their pockets, and most of them likely have no idea it exists.
The marriage allowance, available since April 2015, allows one partner to transfer £1,260 of their unused personal allowance to the other. For the 2025/26 tax year, that transfer cuts the recipient's income tax bill by up to £252 ($334). Couples who have never claimed can backdate by up to four years, bringing the total to roughly £1,260, MoneySavingExpert explained.
