Taxd

What's a UTR and why do I need one?

Your UTR is your Unique Taxpayer Reference number. It's a 10-digit number that HMRC will assign to you to keep track of your tax records. Think of it as being similar to your National Insurance number, but specifically for your tax returns.

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Arjun Kumar
Founder
Oct 28, 2025
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You only need a UTR number if you need to submit a tax return to HMRC, the Self Assessment. You may need to submit a tax return if:

- You're self-employed
- You're a director of a limited company
- You owe tax from savings, dividends, or capital gains
- You earn over £100,000?

Note: What to do if you earn over £100,000

Okay, how do I get my UTR then?

You need to apply with HMRC to obtain a UTR, if you need to file a tax return. The UTR is not automatically provided to you, so you can register online, by phone, or by post. You can do this by visiting the HMRC Register for Self Assessment page. You'll need to provide the usual details about yourself. And, if appropriate and required, about your business.

I've got a UTR, but I can't find it...

If you've lost your UTR, you can speak to the HMRC Self Assessment helpline. They will be able to provide you with your UTR. Alternatively, you can find your UTR on previous letters or communication with HMRC. It will also be shown on your Government Gateway account once you log in.

Do I need my UTR to use Taxd?

In short, yes. That's because you need a UTR to be able to submit your tax return to HMRC. If you give us permission, we can also use your UTR to pull data from HMRC around your employment income, benefits, and taxes paid.

arj
Arjun Kumar
Founder
Arj is ATT qualified with over 8 years’ experience developing products and propositions, as well as leading global networks of technology teams. He’s a former manager at PwC.

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