Marriage tax allowance – Are you missing out on £1,150 (and how to claim)

9 min Read Published: 09 Mar 2020

What is marriage tax allowance?

Marriage tax allowanceMarriage tax allowance is a tax break that enables a married person (or someone in a civil partnership) to claim a proportion of their spouse's personal allowance. In this article, we explain how marriage tax allowance is calculated, how you can make a claim and how it is paid.

Additionally, marriage allowance can be backdated, which means married couples may be eligible to claim up to £1,150. Read on to find out how.

Marriage tax allowance - Am I eligible?

First things first - are you eligible? You may qualify for marriage tax allowance if all of the following apply:

  • You are either married or in a civil partnership
  • You were born after 6th April 1935
  • Either you or your spouse is a non tax payer (earning less than £12,500 per year)
  • Either you or your spouse is a basic rate tax payer (earning between £12,501 and £50,000)

How is marriage tax allowance calculated?

In order to qualify for marriage tax allowance, you need to be married or in a civil partnership and must have been born after 6th April 1935. Simply living together does not mean you qualify for marriage tax allowance and if you were born before 6th April 1935 then you would instead need to consider a different type of tax break called Married Couple's Allowance.

One of you will need to be a non tax-payer (earning less than £12,500 per year) and one must be a basic rate tax-payer (earning between £12,501 and £50,000).

Our table below shows how marriage tax allowance works.

Marriage tax allowance example 

Partner 1 Partner 2
Married? Yes Yes
Born after 6th April 1935 Yes Yes
Income £0 £32,000
Qualify for Marriage Tax Allowance? Yes Yes
Personal Allowance £12,500 £12,500
Allowable tax-transfer thanks to Marriage Tax Allowance -£1,250 +£1,250
Personal Allowance after transfer £11,250 £13,750
Tax Difference £0 -£250


The spouse who has an unused amount of personal allowance can transfer up to 10% of their personal allowance to their partner, which for 2019/20 is 10% of £12,500 = £1,250. By transferring up to £1,250, the higher earner will benefit from having a higher personal allowance and will pay less tax as a result.

If the lower earner earns between £11,250 and £12,500, and the higher earner earns at least £13,750, then the benefit will be tapered. We have provided a handy table below confirming roughly what you would receive as a tax break.

Don't forget: It is the non tax-payer who needs to apply to transfer their allowance, not the other way round.

Marriage tax allowance payable for 2019/20 if you earn between £11,250 and £12,500

Earnings Tax break Earnings Tax break
£11,250 £250 £11,900 £120
£11,300 £240 £11,950 £110
£11,350 £230 £12,000 £100
£11,400 £220 £12,050 £90
£11,450 £210 £12,100 £80
£11,500 £200 £12,150 £70
£11,550 £190 £12,200 £60
£11,600 £180 £12,250 £50
£11,650 £170 £12,300 £40
£11,700 £160 £12,350 £30
£11,750 £150 £12,400 £20
£11,800 £140 £12,450 £10
£11,850 £130 £12,500 £0


When can you apply for marriage allowance?

There is no cut off as such and so you can apply straight away and the good news is that it is relatively straight forward to do so. You can apply online via HMRC's Marriage Tax Allowance application page.

How to claim marriage tax allowance

Firstly, log onto HMRC's Marriage Tax Allowance application page. You'll be asked the standard screening questions so that HMRC can confirm that you qualify, such as whether you are married, whether you were born after 6th April 1935 and that you have earned less than £12,500. Once confirmed, you'll need to provide your first name, surname, date of birth and national insurance number.

If you experience any problems applying online, then you can apply over the phone, just call 0300 200 3300.

How many years can you backdate marriage tax allowance?

Once you have completed the application process (described above), you'll be notified that your application has been received and you will have the chance to apply for previous years' allowances retrospectively.

Of course, in order to qualify for the allowance for previous years, you will need to have met the criteria. Below we provide a simple table that confirms the maximum tax break available for each year, meaning you could claim up to £1,150 in tax breaks.

Marriage tax allowance maximum tax break available 2015 - 2020

Tax Year Max Tax Break
2015/16 £212 (must be submitted by Sunday 5th April LATEST)
2016/17 £220
2017/18 £230
2018/19 £238
2019/20 £250


As you can see from the table above, the deadline for claiming marriage tax allowance for the 2015/16 tax year is Sunday April 5th 2020. Don't leave it until after that date, because once the deadline has passed, you'll be unable to claim for that year.

How is marriage allowance paid?

In most cases, the allowance is paid by adjusting the higher earner's tax code, meaning they pay less tax over the remainder of the tax year. So, rather than receiving actual cash from HMRC or a marriage allowance rebate cheque, the higher earner will simply be paying less tax going forward. If the higher earner is self-employed then their tax bill will be adjusted accordingly via self-assessment.

How long does marriage allowance take to process?

It can take up to two months for HMRC to process the changes to the recipient's tax code. If the recipient is self-employed then the rebate should be processed when they file their tax return.

Do you have to apply for marriage tax allowance every year?

You do NOT have to apply every year. Your personal allowance will transfer automatically to your partner until one of you cancels the marriage allowance or you inform HMRC that your circumstances have changed, eg, because of divorce, employment pushing you into a higher-rate tax threshold or death.

Once you've applied, you (or your partner) will get the extra allowance either:

  • By changing the higher earner's tax code, which can take up to two months.
  • When they file their self-assessment tax return.

How do I stop marriage tax allowance

If you wish to stop marriage tax allowance it is relatively straight forward, you simply need to visit HMRC's marriage tax allowance page (in the same way that you apply for marriage tax allowance) and confirm that your circumstances have changed. You will need full name, date of birth and national insurance number and should take no longer than 5 minutes in total.

Marriage Tax Allowance: All you need to know

What is it?

A tax break that enables those that are married or in a civil partnership to claim a proportion of their spouse's personal allowance. In 2019/20 it is worth up to £250.

Marriage tax allowance calculator

You can check how much you could be owed by using HMRC's online marriage tax calculator

Contact numbers

You can contact HMRC and speak to them about marriage tax allowance by calling 0300 200 3300

Web addresses

To apply for marriage tax allowance visit HMRC's Marriage Tax Allowance application page

To cancel marriage tax allowance vistit HMRC's marriage tax allowance cancellation page

To use HMRC's marriage tax allowance calculator visit HMRC's online marriage tax calculator


You can claim marriage tax allowance retrospectively for up to 5 years, however you will need to check the deadline before you claim. We have confirmed the deadlines for each tax year below (assuming the rules do not change).

Tax year Max claim amount Deadline date
2015/16 £212 05/04/20
2016/17 £220 05/04/21
2017/18 £230 05/04/22
2018/19 £238 05/04/23
2019/20 £250 05/04/24


Looking for a financial adviser near you?

Do you need financial advice? An independent financial adviser can show you how to make the most
of your money. Find your nearest qualified and regulated adviser using this VouchedFor search tool.

Alternatively, Hargreaves Lansdown, one of the UK’s largest firms providing restricted financial advice, is offering a £200 John Lewis voucher* to new clients.