| 1 | Due date for payment of Corporation Tax for period ended 31 December 2019. |
| 5 | Deadline for notifying HMRC of new sources of taxable income or gains or liability to the High Income Child Benefit Charge for 2019/20 if no tax return has been issued. |
| 14 | Due date for income tax for the CT61 quarter to 30 September 2020. |
| 19 | Tax and NICs due under a 2019/20 PAYE Settlement Agreement. PAYE, Student loan and CIS deductions are due for the month to 5 October 2020. PAYE quarterly payments are due for small employers for the pay periods 6 July 2020 to 5 October 2020. |
| 31 | Deadline for submitting ‘paper’ 2019/20 self assessment returns. |