Company accounts filing deadline
Deadline for filing your company tax return is 12 months after your accounting period for corporation tax ends.
Corporation tax return
Filing deadline for corporation tax return self-assessment form CT600 for period ended 31 December 2018 to be submitted to HMRC.
Corporation tax payment
Corporation tax payment due for year-end 31 March 2019, for those companies not liable to pay their liability by instalments.
CT61 payment
Due date for income tax for the CT61 quarter to 31 December 2019.
CT61
End of CT61 quarterly period.