VALENTINES Day is the most romantic day of the year, but it can also be costly.

Buying presents, going out for dinner or even going away with your partner could set you back.

But, married couples and those in civil partnerships might be eligible for this underutilized cash boost worth £250.

HMRC says more than 1.7 million couples are already committed to the Marriage Allowance boost, but it is estimated more than two million are missing out.

If your claim is backdated, you could even receive up to £1,150. But, this is the last chance for eligible couples to backdate claims for the 2015/16 tax year as the deadline for doing so is April 5.

Angela MacDonald, HMRC’s Director General for Customer Services, said: “Applying for Marriage Allowance is a quick and easy way for married couples and people in a civil partnership to have £250 or more put back in their pockets.

“It’s fantastic to see so many couples have already put a few minutes aside to apply and we hope many more will sign up this Valentine’s Day to take advantage of this tax relief.”

Couples can find out more information and apply for Marriage Allowance at