7th December – Deadline for VAT returns and payments of the accounting quarter period ending 31 October 2023
19th December – Monthly deadlines for postal payments of CIS, NICs and PAYE to HMRC
22nd December – Monthly deadline for electronic remittance of CIS, NICs and PAYE to HMRC
31st December – The due date for payment of Corporation Tax for period ended 31 March 2023