Tax and business calendar

Details of compliance and regulatory deadlines.

To see expired deadlines, please use the following link: Expired deadlines

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14 Mar 2021

  • EC sales list

    Deadline for paper monthly or quarterly return filing.

19 Mar 2021

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

    If you pay by cheque through the post, monthly payments due for PAYE, class 1 NICs and student loan deductions from February 2021.

  • CIS return

    Construction Industry Scheme: monthly return due for period up to 5th of previous month.

21 Mar 2021

  • EC sales list

    Deadline for online monthly or quarterly return filing.

  • Intrastat

    Due date for payment of supplementary declarations for February 2021.

22 Mar 2021

  • 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 Mar 2021

  • 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 2020 to be submitted to HMRC.

  • Company accounts filing deadline

    Deadline for filing your company tax return is 12 months after your accounting period for corporation tax ends.

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Expired deadlines

Details of expired compliance and regulatory deadlines.

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