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.