Important Dates

This is a summary of the various dates and timings you should be aware of:
Once the Company is set up you need to register the Company for Corporation Tax with HM Revenue & Customs by completing form CT41G. This will usually be sent to the registered office approximately one month after incorporation.

Companies House

If your Company’s first accounts cover a period of more than 12 months, you must deliver them to Companies House within 21 months of the date of incorporation for private companies (within 18 months for public companies), or 3 months from the accounting reference date, whichever is the longer. In subsequent years a private company has 9 months from the end of the accounting reference period to deliver accounts.

Annual Return (363)

The annual return is prepared at the anniversary of the company’s incorporation, it is then due 28 days after this date. Failure to file the Return may result in your Company being struck off the register.

HMRC – Full Annual Accounts & Corporation Tax Return (CT600)

To be sent to HMRC within 12 months of the year end. (Earlier dates may apply to the first year).

Corporation Tax

Payment of Corporation Tax is due 9 months after the year end. (Earlier dates may apply in the first year).

VAT Returns and Payment

Due at the end of the month following each quarter.

As an example:
  • Quarter ending 31 March Due by 30 April
  • Quarter ending 30 June Due by 31 July
  • Quarter ending 30 September Due by 31 October
  • Quarter ending 31 December Due by 31 January


  • Forms P11D & P11D(b)
  • Due after the end of each tax year and should reach HMRC by 6 July.
  • Deductions from salary should be paid 14 days after the end of the period.

Assuming that the Company is eligible for quarterly payments they will be due by:

  • Quarter from 6 April to 5  July – payment due by 22 July
  • Quarter from 6 July to 5  October – payment due by 22 October
  • Quarter from 6 October to 5 January – payment due by 22 January
  • Quarter from 6 January to 5 April – payment due by 22 April


Relates to National Insurance Contributions on certain benefits in kind such as medical insurance, beneficial loans, company cars etc. If this applies this payment is due by 22 July following the end of the tax year.


Self Assessment Tax Return and first Payment on account

Due by 31 January

Second Payment on Account Due by 31 July.