Tax Gap: IRS Could Significantly Increase Revenues by Better Targeting Enforcement Resources

A letter report issued by the Government Accountability Office with an abstract that begins "The Internal Revenue Service (IRS) spends most of its enforcement resources on examinations. Correspondence exams of individual tax returns, which target fewer and simpler compliance issues, are significantly less costly on average than the broader and more complex field exams. GAO estimated that the average cost (including overhead) of correspondence exams opened in 2007 and 2008 was $274, compared to an average of $2,278 for field exams. IRS spent almost 20 percent of the $1.6 billion per year that it devoted to exams on returns from taxpayers with positive income of at least $200,000, even though such returns accounted for only 3 percent of the 136 million individual returns filed per year. (Positive income, a measure that IRS uses to classify returns for exam planning purposes, disregards losses that may offset this income).