Corporation tax

End of corporation tax financial year.

Company accounts filing deadline

Deadline for filing your company tax return is 12 months after your accounting period for corporation tax ends.

Corporation tax return

Filing deadline for corporation tax return self-assessment form CT600 for period ended 31 March 2017 to be submitted to HMRC.

Disincorporation relief ends

Government will not extend disincorporation relief beyond the 31 March 2018 expiry date.

CT61 payment

Due date for income tax for the CT61 period to 31 March 2018.