Tax and business calendar

Details of compliance and regulatory deadlines.

    31 March 2023

    • Corporation tax

      End of corporation tax financial year.

    • CT61

      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.