Tax and business calendar
Details of compliance and regulatory deadlines.
31 March 2023
End of corporation tax financial year.
End of CT61 quarterly period.
Corporation tax return
Filing deadline for corporation tax return self-assessment form CT600 for period ended 31 March 2022 to be submitted to HMRC.
Company accounts filing deadline
Deadline for filing your annual accounts is 9 months after your company’s financial year ends.