14 January - Return and payment of CT61 tax due for quarter to 31 December 2014
	19/22 January - PAYE/NIC, student loan and CIS deductions due for month to 5/1/2015 or quarter 3 of 2014/15 for small employers
	31 January
	- 
		Deadline for filing 2014 Self Assessment personal, partnership and trust Tax Returns - £100 first penalty for late filing even if no tax is due or tax due is paid on time
- 
		Balancing self assessment payment due for 2013/14
- 
		Capital gains tax payment due for 2013/14
- 
		First self assessment payment on account due for 2014/15
- 
		Interest accrues on all late payments
- 
		Half yearly Class 2 NIC payment due
- 
		Further penalty of 5% of tax due or £300, whichever is greater for personal tax returns still not filed for 2012/13
- 
		5% penalty for late payment of tax unpaid for 2012/13 self assessment