TAX DIARY JUNE & JULY 2021 24 May 2021 Share 1 June 2021 - Due date for Corporation Tax due for the year ended 31 August 2020. 19 June 2021 - PAYE and NIC deductions due for month ended 5 June 2021. (If you pay your tax electronically the due date is 22 June 2021) 19 June 2021 - Filing deadline for the CIS300 monthly return for the month ended 5 June 2021. 19 June 2021 - CIS tax deducted for the month ended 5 June 2021 is payable by today. 1 July 2021 - Due date for Corporation Tax due for the year ended 30 September 2020. 6 July 2021 - Complete and submit forms P11D return of benefits and expenses and P11D(b) return of Class 1A NICs. 19 July 2021 - Pay Class 1A NICs (by the 22 July 2021 if paid electronically). 19 July 2021 - PAYE and NIC deductions due for month ended 5 July 2021. (If you pay your tax electronically the due date is 22 July 2021) 19 July 2021 - Filing deadline for the CIS300 monthly return for the month ended 5 July 2021. 19 July 2021 - CIS tax deducted for the month ended 5 July 2021 is payable by today. Business Taxciscorporation taxnicp11dpaye CONTACT US