If you’re running a company that provides your personal services then you need to be aware whether the IR35 rules apply.
Simply put, the IR35 rules mean that you have to pay yourself a salary rather than the much more tax efficient method of paying dividends.
Companies need to check on a contract by contract basis whether they’re affected.
To help HMRC have produced an online questionnaire that gives their view. Just answer the questions (honestly!) and get an opinion.