Dates & deadlines

Key accounting dates and deadlines to remember

Each trading year brings with it a wealth of business opportunities, challenges and successes. Whether you’re new to the business world or a veteran, it’s important to keep key accounting dates in mind for the year ahead, and keep on top of your reporting duties to HMRC.

Here are all the major accounting dates and deadlines that you need to be aware of for the year ahead.

31 July 2021

  • Deadline for self-assessment (payment on account)

    Deadline for second payment on account for tax year ended 5 April 2020.

  • 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 2020 to be submitted to HMRC.

01 August 2021

  • Corporation tax payment

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

07 August 2021

  • VAT return

    Due date for June VAT returns unless exempted.

19 August 2021

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

21 August 2021

  • Intrastat

    Due date for payment of supplementary declarations for July 2021.

22 August 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 August 2021

  • Corporation tax return

    Filing deadline for corporation tax return self-assessment form CT600 for period ended 31 August 2020 to be submitted to HMRC.

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