Your essential guide for all the key dates and deadlines in the UK accounting calendar for 2020/2021

We have compiled a list of business dates to remember: as well as the Covid-related deadlines, we have included the regular filing and payment dates. 
 

1 July
Due date for Corporation Tax due for the year ended 30 September 2020.

6 July
Complete and submit forms P11D return of benefits and expenses and P11D(b) return of Class 1A NICs.

19 July
Pay Class 1A NICs (by the 22 July 2021 if paid electronically).

19 July
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
Filing deadline for the CIS300 monthly return for the month ended 5 July 2021. 

19 July
CIS tax deducted for the month ended 5 July 2021 is payable by today.

1 August
Due date for Corporation Tax due for the year ended 31 October 2020.

19 August
PAYE and NIC deductions due for month ended 5 August 2021. (If you pay your tax electronically the due date is 22 August 2021)

19 August
Filing deadline for the CIS300 monthly return for the month ended 5 August 2021. 

19 August
CIS tax deducted for the month ended 5 August 2021 is payable by today.

Past Dates & Deadlines