Tax and business calendar
Details of compliance and regulatory deadlines.
To see expired deadlines, please use the following link: Expired deadlines
30 Apr 2021
Company accounts filing deadline
Deadline for filing your company tax return is 12 months after your accounting period for corporation tax ends, unless Companies House grants a discretionary three-month extension.
Corporation tax return
Filing deadline for corporation tax return self-assessment form CT600 for period ended 30 April 2020 to be submitted to HMRC.