2021-09-19
CIS return
Construction Industry Scheme: monthly return due for period up to 5th of previous month.
2021-09-19
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.
2021-09-21
Intrastat
Due date for payment of supplementary declarations for August 2021.
2021-09-22
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.
2021-09-30
CT61
End of CT61 quarterly period.
2021-09-30
Company accounts filing deadline
Deadline for filing your annual accounts is 9 months after your company's financial year ends.
2021-09-30
Corporation tax return
Filing deadline for corporation tax return self-assessment form CT600 for period ended 30 September 2020 to be submitted to HMRC.
2021-10-01
Corporation tax payment
Corporation tax payment due for year end 31 December 2020, for those companies not liable to pay their liability by instalments.
2021-10-05
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.
2021-10-07
VAT return
Due date for August VAT returns unless exempted.
