Dates and deadlines

21 March 2023

• Intrastat

  Due date for payment of supplementary declarations for February 2023.

22 March 2023

• Monthly electronic PAYE/class 1 NICs/student loan payment

  If paying electronically, pay PAYE, class 1 NICs, student loan deductions and deductions from payments to subcontractors for the month up to the 5th of this month.

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.