7. Set up your company for Corporation Tax

You must give HM Revenue and Customs (HMRC) specific information about your company within 3 months of starting up in business. You may get a penalty if you don’t.

You can do this online once you’ve got your company’s Unique Taxpayer Reference (UTR).

HMRC will use this information to work out when your company must pay Corporation Tax.

Any business activity counts as starting up, eg buying, selling, employing someone, advertising or renting a property.

Your company’s Unique Taxpayer Reference

HMRC will send your company’s Unique Taxpayer Reference to your registered office address, usually within a few days of the company being registered (incorporated).

The letter tells you how to:

  • give HMRC the information they need about your company
  • set up your company’s HMRC online account for Company Tax Returns and Corporation Tax

What you must tell HMRC

You must tell HMRC:

  • the date you started in business
  • your company name and registered number
  • the main address where you do business from
  • what kind of business you do
  • the date you’ll make your annual accounts up to

If you’ve taken over a business

You must also tell HMRC the name and address of the:

  • company you took over
  • person you bought the company from

If your business is part of a group

You must also tell HMRC the name of your business’ parent company and the address of its registered office.