HM Revenue and Customs (HMRC) in partnership with Venture Labs provide an online tax registration service. The service is aimed at small businesses who need to tell HMRC they are a new business, new employer, or new to VAT.
You can register for the key taxes that are relevant to your business and be enrolled for the HMRC Online Services at the same time:
Important Note – If you have already told HMRC that you have started in business and have received your reference number, you do not need to do so again. If you have a Self Assessment or Corporation Tax Unique Taxpayer Reference (UTR), a VAT registration number or Employer reference you can sign up to use HMRC Online Services to deal with HMRC and file your tax return online.
Please note that HMRC's terms and conditions will apply when using the Online Tax Registration Service.