the difference between 1040 forms
OVERVIEW. One of the three forms you can use to file your federal income tax return is IRS Form 1040A. The IRS Form 1040A is one of three forms you can use to file your federal income tax return. Form 1040A is a shorter version of the more detailed Form 1040, but is more complex than the simple 1040EZ form.he IRS Form 1040A is one of three forms you can use to file your federal income tax return.