Company accounts filing deadline

Deadline for filing your company tax return is 12 months after your accounting period for corporation tax ends, unless you have secured a three-month extension with Companies House due to COVID-19 disruption.

EC sales list

Deadline for online monthly or quarterly return filing.


Due date for payment of supplementary declarations for March 2020.

CIS return

Construction Industry Scheme: monthly return due for period up to 5th of previous month.