Are You Owed a Tax Refund? How to Check in Minutes

Here’s a quick one that could land a few hundred pounds back in your account, money that might already be sitting there with your name on it, waiting for you to claim it.

Every year, loads of people overpay tax without ever realising. And every year, a chunk of that money goes unclaimed simply because nobody tells you it’s there. Let’s fix that. This takes about five minutes to check.

How does tax get overpaid in the first place?

More easily than you’d think. It usually happens quietly, through no fault of your own. Common reasons:

You changed jobs, or had a gap between them, and got put on the wrong code for a while.
You started a job part-way through the year and were taxed as if you’d earn a full year’s salary.
You had two jobs at once and your tax-free allowance wasn’t split properly.
You were put on an emergency tax code when you started somewhere new.
You stopped working part-way through the year.

Any of those can mean you’ve handed over more than you owed. And the amounts aren’t small. Refunds of £200 to £500 are common, and some people are owed more than £1,000, especially if it’s been building up over a few years.

The letter to watch for: a P800

After each tax year ends in April, HMRC checks whether everyone paid the right amount. If they spot you’ve overpaid, they send a letter called a P800. These usually land over the summer, so it’s a good time of year to keep an eye out for one.

Here’s the really important bit, and it’s caught a lot of people out. HMRC no longer sends refund cheques automatically. The rules changed, and now if your P800 says you can claim online, you have to actually go and claim it. If you don’t, the money just sits on your record, unclaimed. Nobody chases you. So a P800 landing on the mat isn’t something to file away and forget, it’s money waiting for you to go and get.

How to check, in about five minutes

You don’t have to wait for a letter. You can check for yourself right now:

Go to your Personal Tax Account at gov.uk/personal-tax-account, or open the free HMRC app. You’ll sign in with a Government Gateway login (quick to set up if you haven’t got one).
Check your income tax summary. It shows what you’ve paid and whether your position for the year looks right.
If you’re owed money, claim it there and then and ask for it to go straight to your bank. It usually arrives within about five working days.
If you think you’ve overpaid but nothing’s showing, you can still put in a claim. HMRC doesn’t always spot every overpayment, especially things like work expenses, so it’s worth flagging it to them yourself.

You can go back four years

This is the part worth knowing. You’re not just limited to this year. You can claim back overpaid tax for up to four previous tax years. So if this has been quietly happening for a while, there could be more than one year’s worth waiting for you.

But those older years do eventually close off, so if you’ve had P800 letters in the past you never acted on, it’s worth digging them out and checking they’re still in the window.

One important warning

Tax refunds are a favourite of scammers, so keep this firmly in mind: HMRC will never text or email you to say you’re due a refund, and will never ask for your bank details that way. If you get a message like that, it’s a scam, every time. Don’t tap the link.

Always go directly to the official gov.uk website or the HMRC app yourself, rather than clicking anything in a message. A real refund is always claimed through your own account, never through a link someone sends you.

The five-minute version

Log in to your Personal Tax Account at gov.uk, or the HMRC app.
Check your income tax summary for any overpayment.
If you’re owed, claim it to your bank, it lands in around five working days.
Remember you can go back up to four years.
Ignore any refund text or email, always go to gov.uk yourself.

Five minutes for a possible few hundred quid you’d otherwise never have known about. Not a bad use of a tea break.

This is general information, not personal tax advice. If you’re unsure about your own situation, HMRC can talk it through with you for free.

— Emma