When will HMRC send the company's tax reference?
Last updated: Oct 21, 2026, 17:46 (UTC+08:00)
HMRC posts the 10-digit Unique Taxpayer Reference (UTR) to the registered office after incorporation. If it has not arrived 15 working days after registration, you can request it online. The activation code for the online Corporation Tax service follows within 10 days, or 21 days if you live abroad.
Source: Set up a private limited company: set up your company for Corporation Tax, GOV.UK