THE DEADLINE TO FILE AN APPLICATION FOR EXTENSION TO FILE INCOME TAX RETURN IS APRIL 17, 2012.
Individual Income Tax Return:
Form 4468 Application for Automatic Extension of Time to File US Income Tax Return
Business Income Tax Return:
Form 7004 Application for Automatic Extension of Time To File Certain Business Income Tax, Information, and Other Returns
Other Tax Returns:
Form 5558 Application for Extension of Time to File Certain Employee Plan Returns
Form 8868 Application for Extension of Time To File an Exempt Organization Return.