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Your Unique Taxpayer Reference number (UTR number) is a ten-digit number that can be found on documents from HM Revenue & Customs (HMRC), such as:

  • Your previous tax return(s)
  • Notices to file a tax return
  • Your payment reminders

If you cannot find your UTR number and you are self employed or in a partnership, you can request your UTR number from the Self Assessment Helpline.

If you have lost your UTR number and you are a limited company, you will need to request your Corporation Tax UTR using the online form here.

Read our FAQ here on what is a UTR number.


Date published 6 May 2020 | Last updated 6 Sep 2021

This article is intended to inform rather than advise and is based on legislation and practice at the time. Taxpayer’s circumstances do vary and if you feel that the information provided is beneficial it is important that you contact us before implementation. If you take, or do not take action as a result of reading this article, before receiving our written endorsement, we will accept no responsibility for any financial loss incurred.


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