Firm Profile

Ivins, Phillips & Barker, Chartered


1717 K Street, NW, Suite 600
Washington, DC 20006-5343
United States

Firm Details

Ivins, Phillips & Barker is exclusively engaged in the practice of federal tax, benefits and compensation and estate and gift tax law. Our lawyers are nationally recognized to be among the best and brightest, bringing years of government service and corporate experience to bear on our clients' tax problems. We provide seasoned counsel in all major areas of tax law, and we offer prompt and efficient attention, whether with respect to the most detailed and intricate of issues, or for rapid responses to emergency situations.

Founded by two of the original judges on the United States Tax Court in 1935, our decades of focus on the intricacies of the Internal Revenue Code and Department of Labor regulations have led numerous Fortune 500 companies, as well as smaller companies, tax-exempt organizations, and high net worth individuals to rely on us for answers to their most complicated and sophisticated tax planning problems as well as for complex tax litigation. Our experience has taught us that while the tax code is ever-evolving, for most taxpayers it remains dauntingly complex; we keep up on the latest developments in tax reform so that we can provide timely advice on how changes to the law will affect you and your business.

We believe our clients are best served by a practice environment in which lawyers concentrate on an area of specialization within the tax law, so that they see all the issues that come to the firm in that area. Unlike other firms that use unnecessarily large teams to solve simple problems, IPB keeps clients costs to a minimum with extreme efficiency, outstanding intellect, and practicality. 

We are committed to providing the highest-quality, timely responses to our clients’ needs. We also recognize an obligation to be forward-thinking and to bring potentially beneficial tax planning ideas to your attention, whether you're the Tax Director at a multinational corporation, or an individual taxpayer. 

Our loyal national and international clients know that they can rely on us for the finest, most timely tax advice and tax controversy services available anywhere in the United States.


Siobhan O'Connor
Chief Marketing Officer
Eric R. Fox
Managing Partner

About Our Clients

Allegheny Technologies, Inc.
Allied Universal Services
ASGN Incorporated
Bayer AG
Boston Properties
Capital Group Companies
Castle & Cooke
Chrysler Group
Comcast NBCUniversal
Con Edison
Dole Food Company
Dole Packaged Foods (Itochu)
Dominion Energy
Dresser/GE Oil & Gas
First American Financial Corporation
Franklin Resources
General Mills
General Motors Corporation
Girl Scouts of the USA
Grant Thornton
Hallmark Cards
Henkel of America
Inter-Con Security
International Cemetery, Cremation & Funeral Association
ITG Brands, LLC
Jacobs Engineering
Los Angeles Philharmonic
Merck & Company
Milliken & Company
National Fuel Gas Company
Nissan North America
Owens & Minor
Public Service Enterprise Group (PSEG)
Red Hat, Inc.
River and Mercantile Group
Saudi Arabian Oil Company (Saudi Aramco)
SC Johnson
Shiseido Company, Ltd.
Smithsonian Institution
Southern Wine & Spirits
The Cheesecake Factory
The Dixie Group
United States Golf Association
United Technologies
Vulcan Materials Company
Weather Analytics


Firm Practice Areas

  • Closely Held Companies and Family Businesses Law
  • Employee Benefits (ERISA) Law
  • Litigation and Controversy - Tax
  • Tax Law
  • Trusts and Estates

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Office Locations

United States

United States



Los Angeles, CA

1875 Century Park East, Suite 600

Los Angeles, CA 90067

United States


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District of Columbia

District of Columbia

Washington, DC

1717 K Street, NW, Suite 600

Washington, DC 20006-5343

United States


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