31 January 2022
Personal tax returns (online)
Midnight deadline to submit online self-assessment tax returns for 2020/21.
Midnight deadline to pay any outstanding tax you owe from 2019/20.
First payment on account
Midnight deadline to pay half of any tax owed for 2020/21.
Corporation tax return
Filing deadline for corporation tax return self-assessment form CT600 for period ended 31 January 2021 to be submitted to HMRC.
Company accounts filing deadline
Deadline for filing your annual accounts is 9 months after your company’s financial year ends.