HMRC
Her Majesty’s Revenue and Customs
HMRC is the UK’s Tax, payments and customs authority.
For Self Employed businesses , HMRC regulates and collects Income Tax and National Insurance Class 2 and Class 4.
For Limited Companies, HMRC regulates and collects Corporation Tax, and PAYE for employees.
Useful links to the HMRC website:
Register for HMRC taxes and sign up for online services