This document discusses how to prepare for an IRS audit. It outlines the different types of audits, including mail-in, office, and field audits. It describes the audit process, including initial contact, information document requests, and the anatomy of an income tax audit. Key areas the IRS will examine include revenues, employee compensation, outside contractors, travel and meals, office expenses, and miscellaneous expenses. The document emphasizes being organized, only providing what is requested, and hoping for a "no change letter" at the end of the audit.