1 – Due date for payment of Corporation Tax for the  year ended 31 March 2012

 14 – Return and payment of CT61 tax due for quarter  to 31 December 2012

 19/22 – PAYE/NIC and CIS deductions due for month to

 5/1/2013 or quarter 3 of 2012/13 for small employers

 31 – Deadline for filing 2012 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 2011/12.

 Capital gains tax payment due for 2011/12.

 First self assessment payment on account due for 2012/13.

 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 2010/11.

 5% penalty for late payment of tax unpaid for 2010/11 self assessment.