1 January
Due date for payment of corporation tax for period ended 31 March 2021.
14 January
Due date for income tax for the CT61 quarter to 31 December 2021.
19 January
PAYE, Student loan and CIS deductions are due for the month to 5 January 2022. PAYE quarterly payments are due for small employers for the pay periods 6 October 2021 to 5 January 2022.
31January
Deadline for submitting your 2020/21 self assessment return (£100 automatic penalty if your return is late) and the balance of your 2020/21 liability together with the first payment on account for 2021/22 are also due.
Capital gains tax payment for 2020/21.
Balancing payment – 2020/21 income tax and Class 4 NICs. Class 2 NICs also due.