Tax and business calendar

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.