The United States Federal Trade Commission, joined by a bipartisan coalition of 22 state attorneys general, filed an antitrust and consumer protection lawsuit against Amazon.com Inc. on Monday, August 31, 2026. Filed in the U.S. District Court for the Western District of Washington, the complaint alleges that Amazon engaged in deceptive and unfair trade practices by secretly inflating prices in its online search advertising auctions over a period exceeding seven years.
The federal and state regulatory complaint claims that Amazon covertly and substantially increased the prices that over one million brands and third-party sellers were required to pay to advertise their products on the platform. According to FTC estimates, the alleged auction manipulation extracted over $20 billion in additional revenue from advertising customers since 2019. The legal challenge centers on Amazon's alleged misrepresentation of its second-price auction system, in which auction winners are ostensibly required to pay only one cent more than the second-highest bidder.
However, regulators assert that Amazon altered its auction methodology in 2019 by introducing an undisclosed surcharge referred to internally as a soft reserve price. According to the court filing, this mechanism resulted in advertisers paying their full bid amount an increasingly high percentage of the time. For Sponsored Products advertisements, the proportion of auctions where advertisers paid their full maximum bid rose from 30 to 40 percent in 2021, reached 70 percent in 2022, and climbed to approximately 80 percent in 2024.
The 22 states participating in the lawsuit alongside the FTC include Alaska, Arizona, California, Colorado, Florida, Idaho, Illinois, Indiana, Iowa, Kentucky, Louisiana, Maryland, Nebraska, New Jersey, New York, North Carolina, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Vermont, and Washington. The plaintiffs are seeking permanent injunctive relief, civil penalties, disgorgement of ill-gotten profits, and financial restitution.
Regulatory Statements and Allegations
FTC Chairman Andrew N. Ferguson addressed the filing by stating, "When one of the world's largest online retailers engages in unfair and deceptive conduct, the impact can be staggering. Amazon has millions of advertising customers who were misled into paying significantly higher prices. These higher costs were largely passed on to American consumers."
California Attorney General Rob Bonta echoed those points in a separate statement, noting, "For years, Amazon has misrepresented how it calculates the cost of advertising on its platform. Over the years, Amazon has rigged billions of ad auctions, inflating Amazon's profits at the expense of Americans who rely on Amazon's advertising to generate business."
The specific total amount of civil penalties or financial restitution being sought has not yet been determined, as those monetary remedies remain subject to judicial determination through the litigation process.
Amazon's Defense and Counter-Arguments
Amazon publicly rejected the allegations, characterizing the lawsuit as misguided and arguing that regulatory authorities fundamentally misunderstand how digital advertising auctions operate. In its defense, the company stated that average winning bids for sponsored product advertisements dropped by 50 percent between 2019 and 2025. Furthermore, Amazon argued that prioritizing ad relevancy over bid magnitude saved advertisers over $8 billion collectively from 2021 through 2025. The company maintains that reserve prices are standard industry practice in digital advertising auctions and that business users establish their own maximum billing limits when submitting bids.
Comparative Context and Prior Legal Actions
This legal filing compounds an existing series of regulatory disputes between Amazon and federal authorities. Amazon is concurrently defending a separate federal antitrust lawsuit concerning its core online retail operations, and previously reached a $2.5 billion settlement resolving regulatory allegations involving consumer subscriptions for Amazon Prime. Additionally, California Attorney General Rob Bonta previously filed an antitrust and unfair competition lawsuit against Amazon in September 2022, challenging pricing policies across online retail channels.
Downstream Stakes for Advertisers and Consumers
For the approximately 1.2 million advertisers utilizing Amazon's platform, which includes over 500,000 small- and medium-sized businesses, the lawsuit could prompt structural modifications to Amazon's advertising infrastructure, potentially fostering more transparent pricing mechanisms. Consumer advocates suggest that retail shoppers could also experience financial relief if reduced advertising overhead for sellers translates into lower retail prices on goods. For Amazon, the litigation introduces substantial financial exposure and the risk of court-ordered restructuring for its advertising division, which represents a high-margin business segment.
