Pay your estimated tax for 2012 using Form 1040-ES. You have until April 15 to file your 2012 income tax return (Form 1040). If you do not pay your estimated tax by January 15, you must file your 2012 return and pay any tax due by March 1, 2013, to avoid an estimated tax penalty.
File your 2012 income tax return (Form 1040) and pay any tax due. However, you have until April 15 to file if you paid your 2012 estimated tax by January 15, 2013.
December 10 (Employees who work for tips)
If you received $20 or more in tips during November, report them to your employer - Details
December 16 (Corporations)
Deposit the fourth installment of estimated income tax for 2013 - Details
December 25 (Everyone)
Federal Holiday (Christmas Day) - Details