Companies House automatically notifies HMRC when a limited company or limited liability partnership is incorporated.
Soon after your business has been set up, you should receive a letter from HMRC at your registered office address advising you of the tax obligations and requirements. This letter will also contain your business Unique Taxpayer Reference (UTR).
What is a UTR number?
A company’s UTR is a distinct 10-digit number that HMRC issues to all new limited companies.
These UTR numbers are used to identify companies for all tax-related purposes.
How do I get my UTR number?
Companies House will notify HMRC once your company has been incorporated.
Within 14 days of the company formation, HMRC will send a letter to your registered office address with your UTR number.