Your UTR

Shortly after registering your limited company, HMRC will issue a UTR (Unique Taxpayer Reference) — a 10-digit identifier unique to your business. Think of it as your company’s fingerprint in the tax system.

Here’s an example of a UTR: 7256828241. In some cases, you might see an additional number at the end, but the core 10 digits remain the same.

Where can you find it?

• On the letter HMRC sends you after registration: It’s typically one of the first official pieces of correspondence you’ll receive.
• In your online HMRC account: Once you’ve set up access to HMRC’s digital services, you’ll find the UTR there.
• On official tax documents: Look for it on notices like your “Notice to deliver a Company Tax Return” or payment reminders.

Lost your UTR? Here’s what to do.

Misplaced your company’s UTR? Don’t panic. You can request a copy online through the GOV.UK website. HMRC will send it by post to your company’s registered office address, as listed on Companies House.

Can I use my personal UTR for my company?

In a word: No.

HMRC assigns personal UTRs to individuals for Self Assessment purposes, while businesses get their own UTR. These two numbers are entirely separate and serve different purposes.

Why is this distinction so important?

• When you register a company, it becomes a separate legal entity. That means it needs its own UTR to file its own tax returns, pay Corporation Tax, and interact with HMRC.
• Your personal UTR is tied to your individual tax responsibilities, such as paying Income Tax and National Insurance on your personal income.