JGlide, it appears that 1040A is a simplified 1040 and 1040 EZ is super simple version of 1040. There are filing restrictions and deduction restrictions. I'll paste the wikipedia link and paste below:
http://en.wikipedia.org/wiki/IRS_tax_forms#1040A1040A
The 1040A ("short form") is a shorter version of the Form 1040 U.S. individual income tax return. Use of Form 1040A is limited to taxpayers with taxable income below $100,000 who take the standard deduction instead of itemizing deductions.
A taxpayer who uses the 1040A tax return can only have income from the following sources:
* Wages, salaries, and tips.
* Interest and ordinary dividends.
* Capital gains distributions.
* Taxable scholarships and fellowship grants.
* Pensions, annuities, and IRAs.
* Unemployment compensation.
* Taxable social security and railroad retirement benefits.
* Alaska Permanent Fund dividends.
[edit] 1040EZ
1040EZ from 2005
The Form 1040EZ ("easy form"), Income Tax Return for Single and Joint Filers With No Dependents, is a simplified, six-section Federal income tax return, issued by the United States' Internal Revenue Service. Its use is limited to taxpayers with taxable income below $100,000 (as of tax year 2011[update]) who take the standard deduction instead of itemizing deductions.
Other restrictions include:
* Filing status must be single or married filing jointly.
* Filer must be under age 65 and not blind at the end of the tax year.
* Filers must not claim any dependents (other than themselves).
* No adjustments to income can be claimed.
* The only credit that can be claimed is the Earned Income Tax Credit (EITC).
* The only income to report for the tax year consisted of wages, salaries, tips, taxable scholarship or fellowship grants, unemployment compensation, or Alaska Permanent Fund dividends, and filer's taxable interest was not over $1,500. But if the filer earned tips, including allocated tips, that are not included in box 5 and box 7 of your Form W-2, filer may not be able to use Form 1040EZ.
* Filer did not receive any advanced EIC payments.
Form 1040EZ was introduced by the Internal Revenue Service for the 1982 tax year. The title of the 1982 form was "Income Tax Return for Single filers with no dependents."