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Antitrust/Unfair Trade Practices

The Office of the Attorney General's Antitrust Division is responsible for enforcing the antitrust provisions of Washington's Unfair Business Practices-Consumer Protection Act. The Division also brings actions in federal court under Sections One and Two of the Sherman Act. The Antitrust Division investigates complaints about potential anti-competitive activity.

Our office looks for:

  • Price-fixing and other forms of collusion. Price-fixing includes an explicit agreement among competitors to raise, fix, or otherwise maintain the price at which their goods or services are sold to the detriment of either the competitive marketplace or consumers.
  • Business mergers and monopolistic practices that would result in reduced competition and harm to consumers.
  • For a more in-depth description of antitrust laws, read our guide.

NEW! Resources for Government Procurement Representatives: Learn how to detect and report antitrust violations.

Our  Gasoline Report helps explain factors that affect gasoline prices in Washington.

If you have any information that you think we should know about and your browser supports forms, please let us know. If your browser does not support forms, you may either e-mail us or print out the form and mail it to us at:

Office of the Attorney General
Antitrust Division
800 Fifth Avenue, Suite 2000
Seattle, WA 98104-3188

Telephone: 206-587-5510
Fax: 206-464-6338

Please include your address and telephone number so we may contact you for additional information. The Antitrust Division only processes complaints that involve either Washington State residents or businesses located in Washington State.

Additionally, please be aware that your complaint and any related documents that you submit will become "public records."  Under state law, public records are subject to public records disclosure requests and may therefore be seen by other people.  Please see the Open Government portion of the Attorney General website.

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