What to do if you’ve lost your UTR number

Your UTR (Unique Tax Payers Reference) is a number given to you by HMRC when you register for self assessment.  It is unique to you just like your passport number or national insurance number is, so if you do find you have lost your UTR number then retrieving it will involve passing certain security checks and it isn’t something that HMRC can tell you over the phone.

Here are a few places you can check to find for your lost UTR number:

HMRC Correspondence

  • Your Tax Return;
  • HMRC Statement of Account;
  • Payment Reminders or Late Payment Letters;
  • Your SA250 which is a letter issued when you first registering for self assessment notifying you of your UTR number.

Online

Your UTR number can be found online in your Government Gateway account.  If you registered for self employment online, you will have been required to set up an online account to manage your registration process, personal tax returns, reminder and correspondence with HMRC.  You can generally find your UTR number within the self assessment section or the top right hand corner of your account summary.

By Phone

You can call HMRC on 0300 200 3310, where they will ask you to questions to confirm your identity and then post your UTR number to you (which can take up to 7 days to arrive).

Related:

What is a UTR Number?

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