|1||New Advisory Fuel Rates (AFR) for company car users apply from today.|
|19||PAYE, Student loan and CIS deductions are due for the month to 5 December 2017.|
|30||Online filing deadline for submitting 2016/17 self assessment return if you require HMRC to collect any underpaid tax by making an adjustment to your 2018/19 tax code.|
|31||End of CT61 quarterly period.
Filing date for Company Tax Return Form CT600 for period ended 31 December 2016.