Marriage Allowance Calculator
Find out if you’re eligible for Marriage Allowance and how much you could save on your tax bill.
Your Results
About Marriage Allowance
Marriage Allowance lets you transfer £1,260 of your Personal Allowance to your husband, wife or civil partner if they earn more than you. This could reduce their tax by up to £252 per year.
To be eligible, the lower earner must have income below the Personal Allowance (£12,570) and the higher earner must be a basic rate taxpayer (income between £12,571 and £50,270, or £43,662 in Scotland).
Marriage Allowance in the UK
Marriage Allowance is a tax benefit for married couples and civil partners in the UK. It allows a spouse or civil partner who earns less than the Personal Allowance (£12,570 for 2025-26) to transfer up to £1,260 of their unused allowance to their partner, potentially saving up to £252 per year in tax.
To be eligible, the higher-earning partner must be a basic rate taxpayer (earning between £12,571 and £50,270 in England, Wales, and Northern Ireland, or between £12,571 and £43,662 in Scotland). This scheme was introduced in 2015 and has helped millions of couples reduce their tax burden.
You can also backdate your claim for up to four previous tax years, potentially receiving a lump sum payment for any tax years you were eligible but didn’t claim.
How to Use the Marriage Allowance Calculator
Step 1: Enter Your Relationship Status
Select whether you are married or in a civil partnership from the dropdown menu. Remember, only couples who are legally married or in a civil partnership can claim Marriage Allowance.
Step 2: Input Income Details
Enter the annual income for both partners. The lower earner’s income should be below the Personal Allowance (£12,570), while the higher earner should be a basic rate taxpayer.
Step 3: Select Tax Year and Country
Choose the relevant tax year for your calculation and select your country of residence, as tax thresholds vary between England/Wales/Northern Ireland and Scotland.
Step 4: Review Your Results
After clicking the calculate button, review your potential tax savings. The results will show your annual and monthly savings, along with an explanation of how the calculation works.
Step 5: Check Backdated Claims
If you’re eligible, check the potential backdated claims section to see how much you could claim for previous tax years. You can backdate claims for up to four years, potentially receiving a significant lump sum payment.