The prospect of being audited by the IRS is rather frightening, and many taxpayers do not know what to expect in a potential tax audit. However, only around 1 percent of people who file taxes are audited, and there is a great deal of confusion about what makes an audit likely. When filing a tax return, it is important to understand what the IRS looks for when deciding who to audit.
The DIF System
The IRS uses automated scoring known as the Discriminant Information Function (DIF) System to analyze tax returns. This system compares people’s incomes in a geographic area and looks at factors such as family size, how income is earned, and real estate property values to find any discrepancies that may require an audit. The IRS also uses an Unreported Income DIF (UIDIF) score to analyze whether a person is likely to have any income that was not reported correctly.
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