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Farmers & Fishermen

January 17
Pay your estimated tax for 2011 using Form 1040-ES. You have until April 17 to file your 2011 income tax return (Form 1040). If you do not pay your estimated tax by January 17, you must file your 2011 return and pay any tax due by March 1, 2012, to avoid an estimated tax penalty.

March 1
File your 2011 income tax return (Form 1040) and pay any tax due. However, you have until April 17 to file if you paid your 2011 estimated tax by January 17, 2012.