Check your HMRC UTR number

Are you wondering "how do I check my Unique Taxpayer Reference (UTR) number online?" Good news - untied's tool can help you. 

To use the UTR check, enter your number below and we'll tell you if it's a valid format. And read on for tips on how to find your UTR number if you've lost it.

Check your UTR

What's a UTR? Find out about your UTR number

Your UTR is your unique taxpayer reference. Your UTR is a ten digit code that HMRC uses to identify you. You will need it to file your tax return.

You'll get a UTR from HMRC when you register for self assessment. If you need help registering, you can do that by clicking here.

Sometimes HMRC or others may refer to it as a tax reference or a personal tax reference. Don't confuse it with your national insurance number (also called an NI number or NINO), which is a mix of letters and numbers.

Your UTR is a very important reference - it can be used to make filings to HMRC on your behalf. So don't share your UTR with anyone you do not intend to be representing you to HMRC. While some earning platforms request a UTR, we encourage them to find other ways to show that you are self-employed - it's a bit like sharing your debit card number to prove you have a bank account. If you use untied we can confirm that you file tax returns with us.

You will be able to find it in your HMRC personal tax account - and if you're an untied user, it will be in your profile screen.

Check my UTR number online

This check will tell you if your number is in the right format. And if you like it or have any questions ... let us know.

If you're thinking about your next job or want to check how much tax you might have to pay, why not also check out our take-home pay calculators?

Sign-up below to get access to more great tools like this.

Lost UTR? More on finding your UTR

If you're still asking yourself "how do I find my UTR?", some more suggestions:
  • The first place to find your UTR is on documents that HMRC have sent to you
  • Take a look for it on previous tax returns you have filed
  • If you have an HMRC login (also known as a government gateway login), you can find your Unique Taxpayer Reference number in your personal tax account.

Remember, your UTR is not the same as your NI number.

 

Telescope and ladder

Once you have your UTR, you can submit your self assessment tax return to HMRC.

untied is the UK's personal tax app. We help people save money, time, and effort on their taxes.

You can try untied for free using the button below - it's quick, simple, and easy.

Try it for free

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UTR tips

UTR tips

In some places, you may see the letter "K" after the UTR. This does not form part of your UTR but is used by HMRC for some payment references.

You can use untied to pay HMRC. We make it simple, quick and easy because your UTR and payment reference will automatically be populated in the untied app.

If your UTR looks like it's 13 digits long, then only include the last ten digits.

Don't have a UTR?

If you don't already have a UTR, untied can help get one by registering you with HMRC. We've made it easy to register in just a few simple steps - whether you're self employed, renting out property, a high-earner, or just need a UTR for anything else.

Need help with your taxes?

If you are worried about how much tax you need to pay, when you need to pay it, or even how you can reduce your tax bill, untied is here to help you.

untied is the UK's personal tax app. We help people save money, time, and effort on their taxes.

You can try untied for free using the button below - it's quick, simple, and easy. Check it out...and if you already have an accountant or bookkeeper, untied works perfectly with them too.

Try it for free

no credit card required

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