The 1040EZ form is perhaps the simplest tax form that can be used to report your yearly earnings and taxes paid to the federal government. Because it is the simplest tax form, only people with fairly simple taxes can use the 1040EZ form to report their taxes. They must meet certain requirements, such as their yearly income being less than $100,000, no self-employment or alimony income, no dependents, and a filing status of single or married filing jointly.