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 January 2019 to be submitted to HMRC.

Corporation tax payment due for year end 30 April 2019, for those companies not liable to pay their liability by instalments.

Filing deadline for corporation tax return self-assessment form CT600 for period ended 31 December 2018 to be submitted to HMRC.

Corporation tax payment due for year-end 31 March 2019, for those companies not liable to pay their liability by instalments.