19 January

PAYE cheque payments for month ended 5 January to reach HMRC by this date (22 January for electronic payments)

19 January

Deadline for filing online CIS return for month ended 5 January

31 January

Deadline for filing online personal tax self-assessment returns for 2016/17 to avoid a possible late filing penalty and extension of the enquiry window

31 January

Deadline for filing amended personal tax self-assessment returns for 2015/16 (see HMRC notice)

31 January

Deadline for paying personal self-assessment balancing payment and any CGT for 2016/17 and first payment on account for 2017/18

2 February 

Forms P46(Car) for quarter ended 5 January to reach HMRC 

5 February