1 March 2023 – Due date for Corporation Tax due for the year ended 31 May 2022.

2 March 2023 – Self-Assessment tax for 2021-22 paid after this date will incur a 5% surcharge unless liabilities are cleared by 1 April 2023, or an agreement has been reached with HMRC under their time to pay facility by the same date.

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

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

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

1 April 2023 – Due date for Corporation Tax due for the year ended 30 June 2022.

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

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

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

30 April 2023 – 2021-22 tax returns filed after this date will be subject to an additional £10 per day late filing penalty for a maximum of 90 days.