TurboTax by Intuit is the easiest to use and passed all of our tests. TurboTax costs a bit more than others for eFiling, but it is the easiest to use and even inexperienced tax filers can be assured that they will receive all deductions and credits that they are eligible for. They also have a new way to file a 1040EZ with your iPhone or Android phone called SnapTax, you just simply take a picture of your W-2 with your phone and answer a few questions to verify your information and instantly file your state and federal return for $14.99. This is the easiest way by far for 1040EZ filers to prepare their returns. TurboTax is offered as boxed software or you can use their online eFile services for State and Federal returns.