Dates and deadlines

30 September 2021

  • CT61

    End of CT61 quarterly period.

  • Company accounts filing deadline

    Deadline for filing your annual accounts is 9 months after your company’s financial year ends.

  • Corporation tax return

    Filing deadline for corporation tax return self-assessment form CT600 for period ended 30 September 2020 to be submitted to HMRC.

01 October 2021

  • Corporation tax payment

    Corporation tax payment due for year end 31 December 2020, for those companies not liable to pay their liability by instalments.

05 October 2021

  • Income tax and capital gains

    Taxpayers who do not receive a self-assessment tax return to complete must notify HMRC by 5 October if they had income or capital gains in the previous tax year on which further tax is due.

07 October 2021

  • VAT return

    Due date for August VAT returns unless exempted.

14 October 2021

  • CT61 payment

    Due date for income tax for the CT61 quarter to 30 September 2021.

19 October 2021

  • Quarterly postal PAYE/class 1 NICs payment

    Q2 (2021/22) PAYE/NIC payment due where paid by cheque. The cheque must be with HMRC by this date in order to avoid automatic interest charge.

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

    If you pay by cheque through the post, pay PAYE, class 1 NICs, student loan deductions and deductions from payments to subcontractors for the month up to the 5th of this month.

  • Postal PAYE settlements

    You must pay any tax and national insurance owed under a PSA by 22 October after the tax year the PSA applies to (19 October if you pay by post).

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