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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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31 Jul 2018

  • Deadline for self-assessment (payment on account)

    Deadline for second payment on account for tax year ended 5 April 2018.

  • Company accounts filing deadline

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

  • Corporation tax return

    Filing deadline for corporation tax return self-assessment form CT600 for period ended 31 July 2017 to be submitted to HMRC.

01 Aug 2018

  • Corporation tax payment

    Corporation tax payment due for year end 31 October 2017, for those companies not liable to pay their liability by instalments.

07 Aug 2018

  • VAT return

    Due date for June VAT returns unless exempted.

14 Aug 2018

  • EC sales list

    Deadline for paper monthly or quarterly return filing.

19 Aug 2018

  • CIS return

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

  • 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 July 2018.

21 Aug 2018

  • EC sales list

    Deadline for online monthly or quarterly return filing.

  • Intrastat

    Due date for payment of supplementary declarations for July 2018.

22 Aug 2018

  • 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 Aug 2018

  • Corporation tax return

    Filing deadline for corporation tax return self-assessment form CT600 for period ended 31 August 2017 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.

01 Sep 2018

  • Corporation tax payment

    Corporation tax payment due for year end 30 November 2017, for those companies not liable to pay their liability by instalments.

  • Advisory fuel rates

    New fuel rates come into force.

07 Sep 2018

  • VAT return

    Due date for July VAT returns unless exempted.

14 Sep 2018

  • EC sales list

    Deadline for paper monthly or quarterly return filing.

19 Sep 2018

  • 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 August 2018.

  • CIS return date

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

21 Sep 2018

  • EC sales list

    Deadline for online monthly or quarterly return filing.

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Details of expired compliance and regulatory deadlines.
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