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.
Deadline for online monthly or quarterly return filing.
Due date for payment of supplementary declarations for March 2020.
Q4 (2018/19) PAYE/NIC payment due where paid by cheque. The cheque must be with HMRC by this date in order to avoid automatic interest charge.
Construction Industry Scheme: monthly return due for period up to 5th of previous month.