Where Can I Find My Unique Tax Reference (UTR) Number?
In this guide, we’ll explain what your UTR number is, when you’ll need it, and most importantly — where to find it. We'll also cover what to do if you've lost it and how to keep it secure.
How to Find Your UTR Number
If you're self-employed, registering for Self Assessment, or setting up a limited company in the UK, you'll need your Unique Taxpayer Reference (UTR) — a vital 10-digit code used by HMRC to identify your tax records. But where exactly can you find it?
What Is a UTR Number?
A Unique Taxpayer Reference (UTR) is a 10-digit number issued by HM Revenue and Customs (HMRC). It's unique to you or your business and is used to track your tax obligations — such as filing Self Assessment tax returns, paying tax on dividends, or reporting income from freelance work.
🧠 Expert insight: Think of your UTR as your National Insurance number for tax — without it, HMRC can't link your tax records correctly.
When Do You Need a UTR Number?
You’ll need your UTR number in a variety of situations, including:
✅ Registering for Self Assessment
✅ Filing your tax return
✅ Working as a sole trader or partner in a business
✅ Receiving dividends from a limited company
✅ Corresponding with HMRC about your tax affairs
✅ Applying for certain mortgages or loans as a self-employed individual
Where Can I Find My UTR Number?
Your UTR number is issued automatically by HMRC when you:
Register for Self Assessment
Incorporate a limited company with Companies House (UTR sent to the company’s registered address)
You can find your UTR number in any of the following places:
📄 HMRC Correspondence
Look on the following documents from HMRC:
‘Welcome to Self Assessment’ letter (SA250)
Tax return reminder letters
HMRC registration letters or any tax-related notices
Look for a 10-digit number — often listed under “UTR” or “Tax Reference”.
🧾 HMRC Online Services
Log in to your HMRC online account at www.gov.uk/personal-tax-account or through the HMRC app.
Go to your Self Assessment section
Your UTR will be shown at the top of the page
💻 Business Tax Account (For Companies)
If you’ve set up a limited company, your company’s UTR will appear in your HMRC business tax account, typically a few days after incorporation.
📧 Through Your Accountant
If you use an accountant or tax advisor, they may have a record of your UTR number and can share it with you securely.
What Does a UTR Number Look Like?
A UTR number is made up of 10 digits — e.g., 12345 67890.
Sometimes, it may appear with a letter prefix such as "UTR:" but the number itself is always 10 digits long.
Lost Your UTR Number?
If you can’t find your UTR number:
Check your HMRC online account – it’s usually the fastest way.
Search past HMRC letters or tax returns – the number will be printed on these.
Call HMRC on 0300 200 3310 – be ready to confirm your identity.
🛑 Important: HMRC will not email or text your UTR for security reasons.
How Long Does It Take to Get a UTR Number?
If you’ve recently registered:
Self Assessment UTR: Usually issued within 10 working days (21 days if you’re abroad)
Company UTR: Usually arrives by post within 7-10 days of incorporation
Keep Your UTR Secure
Your UTR number is confidential — sharing it publicly could lead to fraud or identity theft. Only share it with trusted parties such as:
HMRC
Your accountant or tax advisor
Your mortgage lender (when self-employed)
Frequently Asked Questions (FAQs)
Is my UTR the same as my National Insurance number?
No — your UTR is a separate 10-digit number specific to tax returns and business records.
Can I get a UTR if I’m not self-employed?
Typically, only those required to complete a Self Assessment tax return will receive a UTR.
Can I have more than one UTR number?
No — you should only ever have one personal UTR. A company will have its own separate UTR.
Summary: Key Takeaways
| Detail | Explanation |
|---|---|
| 📌 What is it? | A 10-digit Unique Taxpayer Reference (UTR) |
| 🔍 Where to find it? | HMRC letters, online account, or HMRC app |
| 🧾 Who gets one? | Self-employed, company directors, landlords |
| ⏱️ How long to receive it? | 10 working days (UK), 21 days (abroad) |
| 🔐 Keep it safe? | Yes — it's a confidential tax identifier |
Need Help With Your UTR?
If you're struggling to locate your UTR or want help registering for Self Assessment, our team of experienced tax advisors can assist. Whether you're a sole trader, landlord, or company director, we offer expert support to ensure your tax affairs are compliant and stress-free.
📞 Contact us today or explore our Self Assessment tax services for more guidance.