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Today's IRS Organization

The IRS Restructuring and Reform Act of 1998 prompted the most comprehensive reorganization and modernization of IRS in nearly half a century. The IRS reorganized itself to closely resemble the private sector model of organizing around customers with similar needs.  

To support its structure and ensure accountability, the IRS is divided into three commissioner-level organizations:

Commissioner

Specialized IRS units report directly to the Commissioner's office. The IRS Chief Counsel also reports to the Treasury General Counsel on certain matters.

  • Commissioner, Internal Revenue — John Koskinen
  • Chief of Staff — W. Todd Grams
  • IRS Chief Counsel — William J. Wilkins
  • Taxpayer Advocate Service — Nina E. Olson, National Taxpayer Advocate
  • Appeals — Kirsten Wielobob, Chief
  • Equity, Diversity and Inclusion — Monica Davy, Executive Director 
  • Research, Analysis and Statistics — Rosemary Marcuss, Director
  • Communications and Liaison — Terry Lemons, Chief
  • Office of Compliance Analytics — Dean R. Silverman, Senior Advisor to the Commissioner (Compliance Analytics Initiatives) 

Deputy Commissioner for Services and Enforcement

The Deputy Commissioner reports directly to the Commissioner and oversees the four primary operating divisions and other service and enforcement functions:    

  • Deputy Commissioner for Services and Enforcement — John Dalrymple
  • Wage and Investment Division — Debra Holland, Commissioner
  • Large Business and International Division — Heather Maloy, Commissioner
  • Small Business/Self Employed Division — Karen Schiller, Commissioner
  • Tax Exempt and Government Entities Division — Sunita B. Lough, Commissioner
  • Criminal Investigation — Richard Weber, Chief
  • Return Preparer Office — Carol Campbell, Director
  • Office of Professional Responsibility —Karen L. Hawkins, Director 
  • Office of Online Services — Rajive Mathur, Director
  • Whistleblower Office — Stephen A. Whitlock, Director

Deputy Commissioner for Operations Support

The Deputy Commissioner reports directly to the Commissioner and oversees the integrated IRS support functions, facilitating economy of scale efficiencies and better business practices:

  • Deputy Commissioner for Operations Support — Peggy Sherry
  • Chief Technology Officer — Terence V. Milholland
  • Agency-Wide Shared Services — Dave Grant, Chief
  • Human Capital Officer — David Krieg, Chief
  • Chief Financial Officer — Robin Canady 
  • Privacy, Governmental Liaison and Disclosure — Mary J. Howard, Director

Organization Chart

See the basic structure of today's IRS in this picture of the IRS Organization Chart

At-a-Glance: IRS Divisions and Principal Offices

Get an overview of the four primary operating divisions and the other principal offices in the IRS organization.
 

 

Page Last Reviewed or Updated: 11-Mar-2014