Can Married Couples Pay Less Tax With Marriage Allowance?
Getting married or entering a civil partnership does not automatically reduce your Income Tax bill.
However, there is one tax break that some couples overlook: Marriage Allowance.
Marriage Allowance lets an eligible spouse or civil partner transfer £1,260 of their Personal Allowance to their partner in the 2026/27 tax year.
For qualifying couples, that can reduce the household’s Income Tax bill by up to £252 for the year.
And if you were eligible in previous years but never claimed, you may also be able to backdate your claim.
What is Marriage Allowance?
Most people have a Personal Allowance before they begin paying Income Tax.
For the 2026/27 tax year, the standard Personal Allowance is £12,570.
Marriage Allowance allows an eligible person to transfer £1,260 of that allowance to their husband, wife or civil partner.
For example:
- Your income: £10,000
- Your partner’s income: £30,000
- You have unused Personal Allowance
- Your partner is a basic-rate taxpayer
You may be able to transfer £1,260 of your allowance to your partner.
Their Income Tax bill could then fall by up to £252.
Who can claim Marriage Allowance?
Broadly, you need to be:
- Married or in a civil partnership
- In a position where one partner has unused Personal Allowance
- Within the relevant Income Tax bands
The recipient cannot be liable to Income Tax at the higher or additional rates.
This means Marriage Allowance is particularly relevant where one person earns little or nothing while the other is a basic-rate taxpayer.
You cannot claim just because you live together
This is an important distinction.
Marriage Allowance applies to:
- Married couples
- Civil partners
Simply living together as a couple does not qualify you.
This remains the case even if you:
- Have lived together for many years
- Own a home together
- Have children together
- Share your finances
For tax purposes, being unmarried is different from being married or in a civil partnership.
How much could you save?
For 2026/27, the transferable amount is £1,260.
Because the recipient is generally receiving basic-rate tax relief at 20%, the maximum annual tax reduction is:
£1,260 × 20% = £252
It may not sound enormous in isolation.
But if you have been eligible for several years without claiming, the total refund can become more meaningful.
Can you backdate Marriage Allowance?
Potentially, yes.
HMRC allows eligible couples to backdate Marriage Allowance claims for previous tax years within the permitted claim window.
As of the 2026/27 tax year, HMRC’s postal guidance states that eligible claims can currently be backdated as far as 6 April 2022, covering the 2022/23 tax year onwards.
You must have met the eligibility requirements in each year being claimed.
So if you have been eligible for several years but never applied, it is worth checking.
What if one partner does not work?
This is one of the clearest situations where Marriage Allowance may be relevant.
Suppose one spouse:
- Does not currently work
- Has little or no taxable income
while the other earns £35,000.
The non-working spouse may have unused Personal Allowance.
Rather than all of that allowance going unused, £1,260 may potentially be transferred to the working spouse.
What if one partner works part-time?
You do not necessarily need to have zero income.
Someone earning below their available Personal Allowance may still be able to transfer Marriage Allowance.
For example, someone earning £9,000 could potentially have unused Personal Allowance.
However, transferring the allowance reduces the transferor’s own Personal Allowance.
HMRC warns that this can occasionally mean the transferring partner has some Income Tax to pay, although the couple can still be better off overall.
What if your partner earns more than £50,270?
For taxpayers in England, Wales and Northern Ireland, the higher-rate threshold for 2026/27 is £50,270 where the standard Personal Allowance applies.
Marriage Allowance is not available where the receiving partner is liable to higher- or additional-rate Income Tax.
Scotland has different Income Tax bands, so Scottish taxpayers need to consider the Scottish thresholds separately.
What about dividends and savings?
This can make the calculation less obvious.
You should not look only at someone’s salary.
Income can also include:
- Savings interest
- Dividends
- Pension income
- Property income
- Self-employed profits
HMRC specifically notes that where either partner has other income, such as dividends or savings, you may need to work out carefully who should make the claim.
Does Marriage Allowance happen automatically?
No.
Being married does not automatically transfer part of your Personal Allowance.
A claim needs to be made.
Normally, it is the lower-income partner who applies to transfer part of their allowance.
Once accepted, HMRC can adjust the recipient’s tax position.
How does it affect your tax code?
For employees and pension recipients, HMRC may implement Marriage Allowance through tax codes.
HMRC states that:
- M at the end of a tax code indicates receipt of Marriage Allowance
- N indicates that part of the allowance has been transferred to a partner
For example, the recipient may see their tax-free allowance increase through their PAYE code.
What if you complete Self Assessment?
Marriage Allowance can also interact with Self Assessment.
If you are the person transferring your allowance, HMRC says you can complete the Marriage Allowance section of your tax return.
If both partners complete Self Assessment returns, HMRC advises that the transferring partner should submit their return at least three days before the recipient.
What happens after you claim?
Marriage Allowance normally continues into future years until it is cancelled or circumstances change.
This means you should review the claim if:
- Income increases
- One partner becomes a higher-rate taxpayer
- You separate
- You divorce
- The relationship legally ends
- Your tax circumstances change significantly
Do not assume that eligibility in one year guarantees eligibility forever.
What happens if your income increases?
If circumstances change and Marriage Allowance is no longer appropriate, you may need to cancel it.
HMRC states that where cancellation is because of an income change, the allowance generally continues until the end of that tax year.
Checking the position each year can prevent unexpected adjustments.
Marriage Allowance is not the same as Married Couple’s Allowance
The names are similar, but they are different tax reliefs.
Marriage Allowance involves transferring part of one person’s Personal Allowance to their spouse or civil partner.
Married Couple’s Allowance is a separate relief with different eligibility criteria, primarily relevant where at least one spouse or civil partner was born before 6 April 1935.
Do not confuse the two when checking your eligibility.
A quick example
Consider a married couple:
Partner A
Income: £8,000
Partner B
Income: £32,000
Partner A is not using all of their standard Personal Allowance.
If the eligibility conditions are met, Partner A could transfer £1,260 to Partner B.
Partner B could potentially reduce their Income Tax bill by up to:
£252
If the couple had also been eligible in previous tax years and had never claimed, they could investigate whether a backdated claim is available.
Is Marriage Allowance worth claiming?
If you qualify, there is little reason to knowingly leave the relief unused.
The annual saving may be relatively modest, but claiming can be particularly worthwhile for:
- Single-income married households
- Couples where one partner works part-time
- Parents who have stopped working temporarily
- Couples where one partner has retired
- People who have been eligible for several previous years
The main requirement is making sure you genuinely meet the conditions.
Frequently Asked Questions
How much is Marriage Allowance in 2026/27?
The transferable amount is £1,260 for 2026/27.
How much tax can Marriage Allowance save?
It can reduce the recipient’s Income Tax by up to £252 for the 2026/27 tax year.
Can unmarried couples claim?
No. You generally need to be married or in a civil partnership.
Can I claim if my spouse does not work?
Potentially, yes. This is one of the situations where Marriage Allowance can be particularly relevant.
Can higher-rate taxpayers receive Marriage Allowance?
No. The recipient cannot be liable to Income Tax at the higher or additional rates.
Can Marriage Allowance be backdated?
Yes, where you met the eligibility conditions in previous years and remain within HMRC’s claim deadline.
Final thoughts
Marriage Allowance is relatively simple, but it is also easy to overlook.
If one spouse or civil partner has unused Personal Allowance while the other pays basic-rate Income Tax, check whether a transfer is possible.
The maximum annual saving is £252, and a backdated claim could increase the total benefit.
At Merranti Accounting, we help individuals understand their personal tax position, available allowances and whether they are paying more tax than necessary.
Contact Merranti Accounting if you would like help reviewing your personal tax position.
Written by Stephen Watts ACMA
Accounting Director, Merranti Accounting
Stephen is Merranti Accounting’s Accounting Director and works with businesses and individuals on financial and accounting matters. Merranti also notes that he sits on the boards of a number of companies, giving him practical commercial experience alongside his accounting work.
Author image: Use Stephen’s existing Merranti headshot.
