- 1 June 2013 – Due date for Corporation Tax due for the year ended 31 August 2012.
- 19 June 2013 – PAYE and NIC deductions due for month ended 5 June 2013. (If you pay your tax electronically the due date is 22 June 2013.)
- 19 June 2013 – Filing deadline for the CIS300 monthly return for the month ended 5 June 2013.
- 19 June 2013 – CIS tax deducted for the month ended 5 June 2013 is payable by today.
- 1 July 2013 – Due date for Corporation Tax due for the year ended 30 September 2012.
- 6 July 2013 – Complete and submit forms P11D return of benefits and expenses and P11D(b) return of Class 1A NICs.
- 19 July 2013 – Pay Class 1A NICs (by the 22 July 2013 if paid electronically).
- 19 July 2013 – PAYE and NIC deductions due for month ended 5 July 2013. (If you pay your tax electronically the due date is 22 July 2013.)
- 19 July 2013 – Filing deadline for the CIS300 monthly return for the month ended 5 July 2013.
- 19 July 2013 – CIS tax deducted for the month ended 5 July 2013 is payable by today.