Important Tax diary dates March 2019

1 March 2019 – Due date for Corporation Tax due for the year ended 31 May 2018.

2 March 2019 – Self assessment tax for 2017/18 paid after this date will incur a 5% surcharge.

19 March 2019 – PAYE and NIC deductions due for month ended 5 March 2019. (If you pay your tax electronically the due date is 22 March 2019)

19 March 2019 – Filing deadline for the CIS300 monthly return for the month ended 5 March 2019.

19 March 2019 – CIS tax deducted for the month ended 5 March 2019 is payable by today.