Introduction
With the current financial year drawing to a close at 11.59pm on 5 April 2026, married couples and those in civil partnerships are being reminded to review their entitlement to the Government's Marriage Allowance.
Financial planners warn that missing the upcoming deadline could mean households forgo up to £252 in tax relief for the year. The Marriage Allowance enables eligible couples to reduce their overall Income Tax bill, a step which can prove beneficial during an ongoing period of economic pressure in the UK.
Approaching end of tax year prompts financial planning
The end of the tax year marks an important deadline for individuals wishing to optimise their tax affairs. Financial experts highlight the significance for married couples and civil partners, as the window to claim or transfer certain tax benefits narrows.
Many households review their finances annually to ensure they are taking advantage of all available Government allowances before the reset in April. Failure to act on time can result in lost entitlements for the preceding year.
Understanding the Marriage Allowance
The Marriage Allowance is a targeted tax relief offered by the UK Government. It allows a lower-earning spouse or civil partner to transfer up to £1,260 of their unused personal tax allowance to their partner.
This transfer can reduce the couple’s combined Income Tax bill, providing tangible savings for eligible households. The relief was introduced to support families with imbalanced earnings, aiming to keep more money in households where one partner’s income falls below the personal allowance threshold.
Eligibility criteria for couples
To qualify for the Marriage Allowance, one partner must earn less than the annual personal allowance, currently £12,579, while the other partner must be a basic-rate taxpayer. The couple must be either married or in a registered civil partnership.
The allowance cannot be claimed if both partners are higher or additional rate taxpayers, or if both incomes exceed the threshold. According to HM Revenue and Customs (HMRC), millions remain eligible but have yet to apply for the relief.
Potential financial savings explained
By transferring £1,260 of unused personal allowance, a couple can reduce their annual tax bill by up to £252. This savings figure is set by HMRC and has been consistent in recent years.
Financial specialists emphasise that, for many, this sum is equivalent to additional cash in the household budget. The benefit is calculated to reflect the basic rate of Income Tax on the transferred allowance.
Backdating claims and missed opportunities
Taxpayers who may have missed applying in previous years are also able to backdate claims for Marriage Allowance by up to four years, subject to eligibility requirements in the earlier periods.
HMRC confirms that backdating could deliver a cumulative saving of more than £1,000 for some couples, depending on their circumstances. Claims can be completed online and typically require only basic identity and income details from both partners.
Final Summary
As the 2025/2026 financial year concludes, married couples and civil partners are being encouraged to act swiftly to secure potential savings through the Marriage Allowance.
Those who miss the 5 April deadline risk forgoing up to £252 in tax relief this year sums which, particularly when backdated, can provide over £1,000 in total benefit. Reviewing eligibility and acting in time ensures that households do not unintentionally overpay Income Tax. For practical tools to track tax relief and allowances, users may find the Pie app a useful resource for their financial planning needs.
