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.