1 August 2023 – Due date for corporation tax due for the year ended 31 October 2022.

19 August 2023 – PAYE and NIC deductions due for month ended 5 August 2023. (If you pay your tax electronically the due date is 22 August 2023)

19 August 2023 – Filing deadline for the CIS300 monthly return for the month ended 5 August 2023. 

19 August 2023 – CIS tax deducted for the month ended 5 August 2023 is payable by today.

1 September 2023 – Due date for corporation tax due for the year ended 30 November 2022.

19 September 2023 – PAYE and NIC deductions due for month ended 5 September 2023. (If you pay your tax electronically the due date is 22 September 2023)

19 September 2023 – Filing deadline for the CIS300 monthly return for the month ended 5 September 2023. 

19 September 2023 – CIS tax deducted for the month ended 5 September 2023 is payable by today.
 

Source:HM Revenue & Customs| 16-07-2023