1 March 2018 – Due date for corporation tax due for the year ended 31 May 2017.
2 March 2018 – Self assessment tax for 2016/17 paid after this date will incur a 5% surcharge.
19 March 2018 – PAYE and NIC deductions due for month ended 5 March 2018. (If you pay your tax electronically the due date is 22 March 2018)
19 March 2018 – Filing deadline for the CIS300 monthly return for the month ended 5 March 2018.
19 March 2018 – CIS tax deducted for the month ended 5 March 2018 is payable by today.
1 April 2018 – Due date for corporation tax due for the year ended 30 June 2017.
19 April 2018 – PAYE and NIC deductions due for month ended 5 April 2018. (If you pay your tax electronically the due date is 22 April 2018)
19 April 2018 – Filing deadline for the CIS300 monthly return for the month ended 5 April 2018.
19 April 2018 – CIS tax deducted for the month ended 5 April 2018 is payable by today.
30 April 2018 – 2016-17 tax returns filed after this date will be subject to an additional £10 per day late filing penalty.