Marriage Allowance: How to Transfer Your Unused Tax Allowance

The UK Marriage Allowance is a valuable tax saving scheme designed for married couples and civil partners. It allows a spouse or civil partner who earns less than the tax-free Personal Allowance to transfer a portion of their unused allowance to their higher-earning partner. This simple adjustment can reduce the couple’s overall tax bill by up to £252 in the current tax year. Despite its simplicity, hundreds of thousands of eligible couples fail to claim this benefit every year.

Who is Eligible for Marriage Allowance?

To qualify for the Marriage Allowance, couples must meet the following strict criteria set by HMRC:

• You must be married or in a registered civil partnership (cohabiting couples who are not married are not eligible).
• One partner must have a taxable income below the Personal Allowance threshold (usually £12,570 or less).
• The other partner must be a Basic Rate taxpayer (earning between £12,571 and £50,270 in England, Wales, and Northern Ireland, or up to £43,662 in Scotland). Higher or additional rate taxpayers cannot receive the transfer.

How the Allowance Transfer Works

Under the scheme, the lower-earning partner transfers exactly 10% of the standard Personal Allowance, which equates to £1,260, to their spouse. This reduces the lower earner’s Personal Allowance by £1,260 and increases the higher earner’s Personal Allowance by the same amount. The higher earner now has an extra £1,260 of income taxed at 0% instead of 20%, generating a tax saving of £252 (£1,260 multiplied by 20% equals £252).

Backdating Your Claim for Extra Savings

If you were eligible for the Marriage Allowance in previous tax years but did not apply, HMRC allows you to backdate your claim for up to 4 tax years. This can result in a direct refund payment of up to £1,250 depending on your eligibility in those years. Once you apply, the allowance transfer will automatically continue every tax year until you cancel it or your financial circumstances change (for example, if the lower earner starts earning above the threshold).