All limited companies that are not dormant for corporation tax purposes must file their corporation tax returns to HMRC and they must be filed online. The deadline for filing corporation tax returns is one year after the company’s year end. The year end for corporation tax must be the same as the accounts. There are penalties for not filing a company tax return by the deadline:
There are also penalties and interest charges for late payments.
All sole traders, self-employed and partnerships must register and file their tax returns, called self assessment tax return, every year that they are still trading. Company directors and employees who have other income such as rental income or dividend must also register and file their self assessment tax return each year. The deadline for self assessment registration is 5 October after the year end. The year end for a self assessment tax return is 5 April. The deadline for filing this self assessment tax return is:
The penalties for late filing a self assessment tax return are:
There are also penalties and interest for late payments.