1 October 2018 – Due date for Corporation Tax due for the year ended 31 December 2017.
19 October 2018 – PAYE and NIC deductions due for month ended 5 October 2018. (If you pay your tax electronically the due date is 22 October 2018.)
19 October 2018 – Filing deadline for the CIS300 monthly return for the month ended 5 October 2018.
19 October 2018 – CIS tax deducted for the month ended 5 October 2018 is payable by today.
29 October 2018 – Autumn Budget
31 October 2018 – Latest date you can file a paper version of your 2018 self-assessment tax return.
1 November 2018 – Due date for Corporation Tax due for the year ended 31 January 2018.
19 November 2018 – PAYE and NIC deductions due for month ended 5 November 2018. (If you pay your tax electronically the due date is 22 November 2018.)
19 November 2018 – Filing deadline for the CIS300 monthly return for the month ended 5 November 2018.
19 November 2018 – CIS tax deducted for the month ended 5 November 2018 is payable by today.
Source: HM Revenue & Customs | 20-09-2018 (updated 26-09-2018)
