Calculate how much you could save with the Marriage Allowance tax break.
Must be under £12,570
Must be a basic rate taxpayer (under £50,270)
Annual Tax Saving
£252.00
You are eligible
Transfer Amount
£1,260
Backdate (4 years)
£1,008
Lower PA
£11,310
Higher PA
£13,830
The Marriage Allowance is a UK tax break that allows a spouse or civil partner who earns less than the Personal Allowance (£12,570) to transfer a portion of their unused allowance to their higher-earning partner. This can reduce the higher earner's tax bill by up to £252 per year. It's a simple way for couples to lower their combined tax liability.
To be eligible, the higher-earning partner must be a basic rate taxpayer, meaning their income is between £12,571 and £50,270. At Calculator Site, we designed this tool to make it easy to see if you qualify and how much you could save. For more details on your earnings, see our Take-Home Pay Calculator.
Don't Miss Out: Backdate Your Claim
You can backdate your Marriage Allowance claim for up to four previous tax years. If you were eligible during that time, you could receive a lump-sum payment of over £1,000. It is free to apply and the process can be completed online via the official government website.
The figures for Marriage Allowance are set by the government each tax year. Here are the most important numbers for the current 2025/26 tax year.
£1,260
Allowance Transferred
£252
Max Annual Saving
4 Years
Can Be Backdated
Understanding these figures can help you plan your finances. You might also find our Salary Calculator useful for estimating your annual income and tax.
How to use this Calculator Site tool
Simply enter the annual income for both you and your partner into the fields provided. The calculator will instantly tell you if you are eligible for the Marriage Allowance and show the potential tax saving you could make for the year. The results are based on the current tax year rules.
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