What is Form 1040A?

Form 1040A is U.S. Individual Income Tax Return. It's one of the three in the 1040 series. The forms in the 1040 series are the main form for reporting your income information to the Internal Revenue Service. Form 1040EZ, only one page in length, is the simplest to fill out. Form 1040A is two pages but it's less complicated than Form 1040, because it allows a smaller number of attachments (forms and schedules).