Millions will miss out on HMRC cash from next month if they don't act now

April can be a tough month for many households up and down the country, with increases in council tax and utility bills cutting into budgets and making life even harder for millions struggling with the cost of living. But, there are some opportunities for people to claim some money back from the Exchequer that will close next month.

With a new tax year comes the end of a couple of tax rebates that millions are yet to claim. This April will see an end to claims for couples' tax relief valid in 2019, as well as on money gained through PPI claims.

Many tax allowances let you claim back tax from up to four years before the current tax year, which from April 6 will mean that any claims for the 2019/2020 tax year will no longer be valid. For some, this could mean missing out on payments of over £1000.

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Ever-watchful Money Saving Expert (MSE) Martin Lewis has been telling couples for months that they could be owed thousands from HMRC, estimating that there are around 2.1 million people eligible for the marriage tax allowance who are not claiming it.

One MSE reader said she had taken his advice and, after filling out a quick form, received a check for £1000 in the post.

If you are married or in a civil partnership and were in 2019, you could have qualified for the marriage tax allowance and not realised it. Couples that live together without being married or in a civil partnership do not qualify.

You can gain up to £252 per year through the tax allowance if one of the pair does not pay income tax, and the other just pays the 20 per cent basic rate. This works by the non-taxpayer shifting 10 per cent of their tax allowance to their