HMRC filing deadline for Corporation Tax Return Form CT600 for period ended 31st December 2016.
Companies House filing deadline for private companies with a year ended 31st March 2017.
End of quarter period for CT61 – Return of Income Tax for Company payments.
Last date to file your 2016/17 Tax Return electronically if you are an employee and wish to have a 2016/17 balancing payment of less than £3,000 collected through your 2018/19 PAYE code.
Monthly PAYE / NIC due date if payment is made electronically.
Deadline for online monthly return filing for EC Sales List.
Monthly PAYE / NIC due date if payment is made by cheque.