| 1 | Due date for payment of corporation tax for period ended 31 March 2017. |
| 14 | Due date for income tax for the CT61 quarter to 31 December 2017. |
| 19 | PAYE, Student loan and CIS deductions are due for the month to 5 January 2018. PAYE quarterly payments are due for small employers for the pay periods 6 October 2017 to 5 January 2018. |
| 31 | Deadline for submitting your 2016/17 online SATR (£100 automatic penalty if your return is late). Due date for HMRC to receive cleared funds for 2016/17 capital gains tax, class 2 NICs and balance of income tax and Class 4 NICs; and first payment on account for 2017/18. |
