The deadline for sending most online 2020/21 Self Assessment tax returns to HMRC, and for paying the related tax, is 31 January 2022. This year, HMRC will not charge you penalties straight away if you are a bit late. But you should still try to sort out your tax by 31 January if you can.

Most CIS workers receive a tax refund (rebate) after they submit their Self Assessment tax return because they usually overpay towards their tax bill through CIS deductions at source. The 2020/21 tax year may be different because of the inclusion of the Self-Employment Income Support Scheme (SEISS) ...