Hi wiylam1995,
To find your UTR you can:
Sign in to your personal tax account:
Personal tax account: sign in or set up
You can also find your Unique Taxpayer Reference on:
- Previous tax returns
- Emails from HMRC
- Other documents HMRC has sent you.
Your UTR is a 10-digit number and may also be called 'tax reference'.
If you've already registered for Self Assessment you can find out when you should receive your UTR:
Check when you can expect a reply from HMRC
Thank you