Unique Taxpayer Reference (UTR): How to Get Yours

What Is a UTR?

A Unique Taxpayer Reference (UTR) is a 10-digit number issued by HMRC when you register for Self Assessment. It uniquely identifies you in the tax system and is used for:

• Filing your Self Assessment tax return
• Corresponding with HMRC about your tax affairs
• CIS verification (if you work in construction)
• Some mortgage applications and other financial checks

How to Get a UTR

Step 1: Register for Self Assessment

Register as self-employed on GOV.UK. You will need your National Insurance number, personal details, and information about your business.

Step 2: Wait for Your UTR

HMRC sends your UTR by post to the address on your registration. This typically takes:

• 10 working days for UK addresses
• Up to 21 working days for overseas addresses

The UTR arrives in a letter titled "Welcome to Self Assessment."

Step 3: Store It Securely

Your UTR does not change. Once you have it, keep it somewhere safe — you will use it for every interaction with HMRC.

Finding a Lost UTR

If you have lost your UTR:

• Check previous Self Assessment tax returns
• Check previous HMRC correspondence
• Log in to your HMRC online account (your UTR is displayed)
• Call HMRC's Self Assessment helpline on 0300 200 3310

Can You Get a UTR Faster?

HMRC does not offer expedited UTR delivery. If you need your UTR urgently (for example, for a CIS verification), register as early as possible and follow up with HMRC by phone if it has not arrived after 10 working days.

UTR for Limited Companies

Limited companies receive a separate UTR when they register for Corporation Tax. This is different from the director's personal UTR. The company UTR is used for the company's tax return and CIS registration.

Set up Accounted with your UTR and Penny will help you stay on top of all your HMRC obligations.

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Your UTR is your tax identity. Get it early and keep it safe. Sign up for Accounted and start building good financial habits from registration day.