This publication covers the general rules for filing a federal income tax return. It supplements the information contained in your tax form instructions. It explains the tax law to make sure you pay only the tax you owe and no more. How this publication is arranged. This publication closely follows Form 1040, U.S. Individual Income Tax Return. It is divided into six parts which cover different sections of Form 1040. Each part is further divided into chapters which generally discuss one line of the form. Do not worry if you file Form 1040A or Form 1040EZ. Anything included on a line of either of these forms is also included on Form 1040. The table of contents inside the front cover and the index in the back of the publication are useful tools to help you find the information you need.