What is a UTR number and where do I find it?

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What is a UTR number and where do I find it? A UTR, or Unique Taxpayer Reference, is the 10-digit number HMRC gives you when you register for Self Assessment. It arrives by post about 15 days later. As at 16 October 2026, the HMRC app shows it too. 10. GOV.UK says it may just be called your tax reference on some HMRC letters. GOV.UK says you will usually get it by post around 15 days after you register for Self Assessment. It takes longer if you live overseas. No. Your National Insurance number covers your National Insurance record. Your UTR is your Self Assessment reference. A contractor verifying a sole trader under CIS needs both. Read the full answer, with every source, at rightotax.co.uk.

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Read the full answer, with every source

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Transcript

What is a UTR number and where do I find it? A UTR, or Unique Taxpayer Reference, is the 10-digit number HMRC gives you when you register for Self Assessment. It arrives by post about 15 days later. As at 16 October 2026, the HMRC app shows it too. 10. GOV.UK says it may just be called your tax reference on some HMRC letters. Read the full answer, with every source, at rightotax.co.uk.

Voice and visuals made with automated software, including AI.

This is general information to help you understand the rules. It isn't tailored to your circumstances, so check your own position before acting on it.

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