The Information Please Database indicates that 92,033 people worked for the Internal Revenue Service in 2007. The number of people employed by the IRS has declined over the years; in the 1990s, the number of people employed by the agency averaged above 110,000.
From 1990 to 2007, the Information Please Database shows the lowest number of people employed in a year was 91,717 in 2006. The peak for the number of employees was in 1992 at 116,673 employees.
With the number of people employed by the IRS in 2007, it cost taxpayers 40 cents per $100 collections, according to the Information Please Database. That amount has changed very little in recent years, ranging from 39 cents to 48 cents per $100 from 2000 to 2007.