If you’re planning to work as self-employed, a sole trader, or under the Construction Industry Scheme (CIS) in the UK, one of the first things you’ll need is a UTR number. This ten-digit number issued by HMRC is essential for filing your Self Assessment tax returns and getting paid properly especially in CIS jobs.
In this guide, we’ll walk you through how to apply for a UTR number in 2025, who needs one, and how Tax2u can help make the process easier.
What is a UTR Number?
A UTR (Unique Taxpayer Reference) is a 10-digit number issued by HMRC when you register for Self Assessment. It identifies you as a self-employed individual or someone who needs to file a tax return.
You’ll need your UTR number to:
- File your Self Assessment tax return
- Get paid correctly under CIS
- Claim back any tax refunds
- Manage your tax affairs with HMRC
Who Needs a UTR Number?
You’ll need to apply for a UTR number if you:
- Are self-employed
- Work under the Construction Industry Scheme (CIS)
- Are a sole trader
- Run a partnership
- Have untaxed income (e.g. from property or investments)
If you’re working in construction and want to be paid without emergency tax, getting a UTR number is essential.
How to Apply for a UTR Number in 2025
You can apply for your UTR number in two ways:
Option 1: Apply Online via GOV.UK
- Go to the HMRC website and select “Register for Self Assessment”
- Create a Government Gateway account (if you don’t have one)
- Provide your full name, National Insurance number, address, and date of birth
- Submit your form and wait up to 10 working days for your UTR number to arrive by post
Option 2: Apply with Help from Tax2u
Avoid the hassle of HMRC forms and delays we can handle the entire process for you in a few clicks.
Apply for your UTR number here
What You’ll Need to Apply
Here’s a quick checklist:
| Requirement | Needed? ✅ |
|---|---|
| National Insurance Number | ✅ |
| Home Address (UK) | ✅ |
| Date of Birth | ✅ |
| Contact Number/Email | ✅ |
| Business Details (if any) | Optional |
How Long Does It Take?
- Online via HMRC: 10 working days (up to 21 if there’s a delay)
- Via Tax2u: We’ll submit the application on your behalf and track it for you no confusing forms or missed steps
Common Delays and How to Avoid Them
- Incorrect personal details – Always double-check your NI number and address
- Moving homes recently – Make sure your current address matches HMRC’s records
- Not registering for Self Assessment first – A UTR is only issued once you’re properly registered
Why Apply Through Tax2u?
Thousands of CIS workers and sole traders trust Tax2u to get their UTR numbers quickly and without stress.
- Fast, simple online form
- We deal with HMRC for you
- CIS-compliant
- Full support from start to finish
Don’t wait for letters to get lost in the post or forms to be rejected.
Ready to Get Your UTR Number?
If you’re starting self-employment in 2025, don’t delay your tax setup. Apply for your UTR number with Tax2u today, and let us take care of the paperwork so you can focus on your work.