JANUARY 2012

• 1st  Corporation Tax due for accounting period ended 31 March 2011
• 31stLast day for filing private company accounts with the Registrar of Companies for accounting periods ended 30 April 2011
• 31st Filing deadline for Corporation Tax Return CT600 for accounting period ended 31 January 2011
• 31stDeadline for 2010/11 tax return submissions online
• 31st Balance of tax due under self assessment for 2010/11
• 31st First payment on account due under self assessment for 2011/12

FEBRUARY 2012

• 1stCorporation Tax due for accounting periods ended 30 April 2011
• 1st£100 penalty imposed where 2010/11 Tax Return has not been submitted
• 28thLast day for filing private company accounts with the Registrar of Companies for accounting period ended 31 May 2011
• 29thFiling deadline for Corporation Tax Return CT600 for accounting period ended 28 February 2011
• 29thLast day to pay any balance of income tax and capital gains tax due under self assessment for 2010/11 or 5% surcharge will be due

MARCH 2012

• 1st Corporation Tax due for accounting period ended 31 May 2011
• 31stLast day for filing private company accounts with the Registrar of Companies for accounting period ended 30 June 2011
• 31stFiling deadline for Corporation Tax Return CT600 for accounting period ended 31 March 2011

APRIL 2012

• 1stCorporation Tax due for accounting period ended 30 June 2011
• 5thEnd of 2011/12 Tax Year last day to maximise ISA Contributions
• 19th Last day to pay 2011/12 PAYE/NIC/CIS Tax before interest is charged
• 30thLast day for filing private company accounts with the Registrar of Companies for accounting period ended 31 July 2011
• 30th Filing deadline for Corporation Tax Return CT600 for accounting period ended 30 April 2011

MAY 2012

• 1st Corporation Tax due for accounting period ended 31 July 2011
• 1st £90 per day penalty imposed where 2010/11 Tax Return has not been submitted. Maximum £900. This is in addition to the first fixed penalty of £100
• 19thDeadline for 2011/12 PAYE Forms P14, P35, P38, P38A and Construction Industry Form CIS36
• 31stLast day for filing private company accounts with the Registrar of Companies for accounting period ended 31 August 2011
• 31st Filing deadline for Corporation Tax Return CT600 for accounting period ended 31 May 2011
• 31st Deadline for giving 2011/12 P60s to employees

JUNE 2012

• 1st Corporation Tax due for accounting period ended 31 August 2011
• 30thLast day for filing private company accounts with the Registrar of Companies for accounting period ended 30 September 2011
• 30thFiling deadline for Corporation Tax Return CT600 for accounting period ended 30 June 2011

JULY 2012

• 1stCorporation Tax due for accounting period ended 30 September 2011
• 6thDeadline for 2011/12 P11Ds, P11D(b)s and P9Ds
• 19thLast day for payment of 2011/12 Class1A NIC
• 31st Last day for filing private company accounts with the Registrar of Companies for accounting period ended 31 October 2011
• 31stFiling deadline for Corporation Tax Return CT600 for accounting period ended 31 July 2011
• 31stSecond payment on account due under self assessment for 2011/12
• 31stLast day to pay any balance of self assessment tax due for the 2011/12 year or further 5% surcharge will be levied

AUGUST 2012

• 1st Corporation Tax due for accounting period ended 31 October 2011
• 1st£300 or 5% of the tax due , whichever is higher, penalty imposed where 2010/11 Tax Return has not been submitted. This is in addition to the first fixed penalty of £100 and the second penalty of £900
• 31st Last day for filing private company accounts with the Registrar of Companies for accounting period ended 30 November 2011
• 31st Filing deadline for Corporation Tax Return CT600 for accounting period ended 31 August 2011
• 31st Last day to pay any balance of self assessment tax due for the 2010/11 year or further 5% surcharge will be levied

SEPTEMBER 2012

• 1stCorporation Tax due for accounting period ended 30 November 2011
• 30thLast day for filing private company accounts with the Registrar of Companies for accounting period ended 31 December 2011
• 30th Filing deadline for Corporation Tax Return CT600 for accounting period ended 30 September 2011

OCTOBER 2012

• 1st Corporation Tax due for accounting period ended 31 December 2011
• 31st Last day for filing private company accounts with the Registrar of Companies for accounting period ended 31 January 2012
• 31stFiling deadline for Corporation Tax Return CT600 for accounting period ended 31 October 2011

NOVEMBER 2012

• 1stCorporation Tax due for accounting period ended 31 January 2012
• 30thLast day for filing private company accounts with the Registrar of Companies for accounting period ended 28 February 2012
• 30thFiling deadline for Corporation Tax Return CT600 for accounting period ended 30 November 2011

DECEMBER 2012

• 1stCorporation Tax due for accounting period ended 28 February 2012
• 31stLast day for filing private company accounts with the Registrar of Companies for accounting period ended 31 March 2012
• 31stFiling deadline for Corporation Tax Return CT600 for accounting period ended 31 December 2011