As long as you’re married or in a civil partnership with the same person for the whole or part of the tax year at the time the claim is made, you can choose to reduce your personal allowance.
You must also only be liable to pay income tax at the basic rate, dividend nil or ordinary rate or the basic or starting rate for savings after your personal allowance has been reduced by the transfer.
You must elect to use the marriage allowance within four years after the end of a tax year, and it will remain in force until you give notice to withdraw it.
However, an election made after the end of a tax year applies only to the year of election.
This is the easiest way for us to operate the allowance for you, as it can be made when your tax return is prepared and once we know your income and your partner’s for 2018/19.
Separation and divorce
If you and your spouse or civil partner separate between the end of a tax year and the date your tax return is due, there’s a slight chance you’ll lose your eligibility for the marriage allowance.
Cancelling the marriage allowance normally takes effect from the next tax year unless the marriage or civil partnership has come to an end through:
• divorce (decree absolute)
• order of judicial separation
• decree of nullity
• in the case of a civil partnership, a dissolution order, order of nullity or order of separation.
In these circumstances, the withdrawal of the marriage allowance can be backdated to the start of the tax year.
Death of a partner
If a spouse or civil partner dies, it’s possible to make a backdated claim for the marriage allowance providing the deceased spouse or civil partner was eligible for it when they were alive.
A claim can be made for any tax year in which you were both alive, including the tax year of death, although no claim can be made thereafter.