Dates and 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.

01 April 2023

  • Corporation tax payment

    Corporation tax payment due for year ending 30 June 2022

  • National Living Wage increase

    National Living Wage will increase to £10.42 an hour for over 23s.

06 April 2023

  • Start of tax year 2023/24

    Start of the new tax year.