This chart book provides background on the depletion of the IRS. For more on how to rebuild the IRS, see: Rebuilding IRS Would Reduce Tax Gap, Help Replenish Depleted Revenue Base. Introduction The IRS budget has been cut dramatically over the past decade, severely undermining the agency’s ability to perform its fundamental jobs of enforcing the nation’s tax laws and helping taxpayers navigate a tax system that relies on voluntary compliance. The agency’s workforce has been sharply reduced, and audit rates, especially for large corporations and high-income taxpayers, have plummeted. As a