Corporation tax
End of corporation tax financial year.
Corporation tax return
Filing deadline for corporation tax return self-assessment form CT600 for period ended 31 December 2017 to be submitted to HMRC.
CT61 payment
Due date for income tax for the CT61 quarter to 31 December 2018.
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 2018 to be submitted to HMRC.