19 January 2024
PAYE and NIC deductions due for month ended 5 January 2024 (postal)
19 January 2024
CIS tax deducted for the month ended 5 January 2024 (postal)
22 January 2024
PAYE and NIC deductions due for month ended 5 January 2024 (online)
CIS tax deducted for the month ended 5 January 2024 (online)
31 January 2024
Midnight deadline to submit online self-assessment tax returns for 2022/23
Midnight deadline to pay outstanding tax owed from 2021/22 unless formal agreement with HMRC to extend
First payment on account – Midnight deadline to pay half of any tax owed for 2022/23