Couples can claim up to £1,260 in overlooked tax savings after HMRC 'backdating'

Couples can claim up to £1,260 in overlooked tax savings after HMRC 'backdating'Around two million married couples are missing out on Marriage Allowance tax relief worth up to £252 per year - and you can backdate claims for up to four years to get £1,260 backCommentsMoneyAlex Evans Deputy Audience Editor and Niamh Kirk Lifestyle Writer14:10, 05 Apr 2026Updated 14:14, 05 Apr 2026View 2 ImagesCouples may be able to claim 'backdated' tax allowance(Image: coldsnowstorm via Getty Images)The tax-free Personal Allowance has remained frozen for years and will stay fixed at its paltry £12,570 threshold for at least another five years after the Government extended the freeze once again, including this Monday.‌It's been locked at its current rate since 2021 and won't budge until 2031. This means, due to 'fiscal drag', increasing numbers of workers will find themselves handing over more tax on their income, as salaries rise with inflation, dragging more earners into the tax net and resulting in heftier bills for everyone.‌The Personal Allowance is the sum you can earn before tax kicks in, and it sits at £12,570, where it's expected to remain until 2031 at the very earliest.‌READ MORE: DWP state pension age rises and payments increase from MondayView 2 ImagesPersonal Allowance remains at £12,570(Image: Getty)That means everything earned beyond that figure is taxed at 20%, while higher rate taxpayers face 40% on income above £50,270, and additional rate taxpayers are hit with 45% on earnings exceeding £125,000.However, there's one method to boost your tax-free Personal Allowance - though you must be married or in a civil partnership.‌Married couples or those in civil partnerships can increase their tax-free earnings by £252 annually and can even backdate their claim for an additional four years. By backdating the claim across up to four separate tax years, you could be in line for a rebate of as much as £1,260.HMRC will adjust you...