More than one million brands and sellers who bought Sponsored Products, Sponsored Brands or Display ads on Amazon are covered by a lawsuit the Federal Trade Commission and 22 state attorneys general filed on August 31, 2026, alleging Amazon buried a surcharge in its ad auctions and charged advertisers their own top bid. Amazon strongly disagrees and calls the case misguided; no court has ruled, and there is nothing for anyone to claim.
Allegations Only · No Settlement Yet
This article describes a government enforcement complaint. The statements below are unproven allegations drawn from that complaint and from the FTC's announcement of it. Amazon has not been found liable, disputes the claims, and no court has decided anything. There is no class, no settlement and nothing to claim. This page is informational and is not legal advice.
What the FTC Says Amazon Did
The case is about a single sentence Amazon repeated for years: that the winner of one of its advertising auctions pays only about one cent more than the next highest bidder.The complaint alleges that stopped being true. Beginning in 2019, according to the FTC, Amazon quietly changed its auction rules to add an undisclosed surcharge it called internally a "soft reserve price," which raised what advertisers actually paid above the price the advertised auction format would have produced. The result, regulators allege, is that Sponsored Products advertisers were charged the full amount of their own winning bid close to 80% of the time — turning what was sold as a second-price auction into something functionally closer to a first-price one.
The FTC says the practice ran for more than seven years and likely extracted tens of billions of dollars from advertisers who did not know it was happening; reporting on the complaint has put the figure above $20 billion. The suit was filed in the U.S. District Court for the Western District of Washington on a 2-0 Commission vote, joined by the attorneys general of 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.
"Amazon has millions of advertising customers who were misled into paying significantly higher prices," FTC Chairman Andrew N. Ferguson said in announcing the case. "These higher costs were largely passed on to American consumers."
Why the Auction Format Is the Whole Case
The distinction at the center of this suit sounds technical and is not. It changes how much a rational bidder should bid.In a second-price auction — the generalized second-price, or GSP, format that became the industry standard for search advertising — the highest bidder wins the placement but pays only fractionally more than the runner-up. That design has a deliberate consequence: because you will never be charged your own number unless a rival actually pushed the price there, you can safely bid your true maximum. Bidding honestly is the optimal strategy.
In a first-price auction, the winner pays exactly what they bid. Bidding your true maximum guarantees you capture none of the value, so bidders shade downward, testing lower numbers over repeated auctions to find the minimum that still wins. This is called bid shading, and it is standard practice.
The alleged harm follows directly. If advertisers believe they are in a second-price auction, they bid high and do not shade. If the pricing is in fact charging them their own bid, that belief becomes expensive. The complaint alleges the share of Sponsored Products auctions where advertisers paid their own bid amount climbed from roughly 30% to 40% in 2021, to 70% in 2022, and to about 80% by 2024, and that Amazon applied larger increases on high-volume shopping days such as Prime Day and Black Friday.
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What the Complaint Quotes From Inside Amazon
The FTC's filing leans heavily on Amazon's own documents. Every quotation below is the agency's characterization of internal material, presented in a complaint that Amazon disputes, and none of it has been tested in court.The complaint alleges one internal document described the auction pricing as having "a surcharge hidden in it." It quotes the executive in charge of Amazon Ads saying the price advertisers pay "isn't set by an actual bidder" but is a "proxy 2nd price that we calculate," and states that another document acknowledged the use of an "invented auction participant" to raise prices — mechanisms the FTC characterizes as essentially shill bids. Another employee is quoted saying the surcharges let Amazon reach prices "beyond what [can] be achieved through advertiser competition."
On concealment, the complaint alleges Amazon understood that disclosure would trigger a backlash: internal material is quoted warning of "irrevocable damage to advertiser trust" and a "downward spiral" of advertisers reducing bids. It alleges employees observed that advertisers "are operating under the assumption that Amazon uses a GSP auction" and consequently "bid far higher than what they are willing to pay." Notes from a 2024 discussion among senior executives are quoted describing a "clever non-transparent way to charge first price" as an "incredibly effective way to drive revenue."
The FTC further alleges that Amazon gave false or misleading answers to advertisers who asked directly whether the auction format had changed. That allegation, if proven, is the one that would matter most legally — a deceptive practice under Section 5 generally requires a misrepresentation, and a direct denial to a customer is the cleanest form of one.
What Amazon Says
Amazon rejected the case on the day it was filed, saying it strongly disagrees with what it called a misguided lawsuit and that the FTC misrepresented how its advertising auctions work while cherry-picking its findings.The company's central defense is behavioral rather than technical: it argues the FTC's theory "fundamentally misunderstands how advertisers operate," because advertisers "adjust bids based on real-world performance, not descriptions of auction mechanics." In other words, Amazon contends sophisticated advertisers optimize against the results they observe — clicks, sales, return on ad spend — rather than against a published description of the auction, so a change in mechanics would show up in their own data and be priced in regardless of how it was labeled.
Amazon also said the quality of its advertising improved over the period while the average cost-per-click stayed flat once adjusted for inflation, and that it shared data with the FTC on multiple occasions.
Those are genuine factual disputes, not spin to be waved off. Whether advertisers actually relied on Amazon's description of the format, and whether they were measurably worse off, are questions a court will have to resolve on evidence.
Who This Reaches — Including Shoppers
The direct group is advertisers: more than a million brands and sellers, over 500,000 of them small and medium-sized businesses, bidding for Sponsored Products, Sponsored Brands and Display placements. For a small seller running ads on thin margins, an inflated cost-per-click is not an abstraction — it is the difference between a product line that works and one that does not.The FTC's second contention reaches much further. The agency says the higher advertising costs were largely passed on to American consumers, on the straightforward theory that sellers price advertising into what they charge. That is an economic argument rather than an established fact, and it is worth flagging that pass-through is one of the most contested questions in this kind of case. If it holds, though, the population affected is not a million sellers — it is anyone who bought an advertised product on Amazon over seven years.
Is There Actually Money at the End of This?
This is where a government case diverges from the settlements OCA usually tracks, and the answer is less straightforward than the headline number suggests.The FTC's own route to money is narrow. For years the agency obtained restitution directly in federal court under Section 13(b) of the FTC Act. In AMG Capital Management v. FTC (2021), a unanimous Supreme Court held that Section 13(b) does not authorize equitable monetary relief such as restitution or disgorgement. That pushed the FTC toward Section 19, which generally requires an administrative cease-and-desist order or a violation of an existing rule before consumer redress can be sought. A Section 5 deception case filed straight into district court therefore does not carry an automatic pot of money at the end.
The 22 states change the arithmetic. Each state joined under its own deceptive trade practices statute, and many state consumer protection laws do authorize restitution and civil penalties without the federal detour. The size of the state coalition here is not just political weight — it is a second, less constrained remedial track.
Private suits are the historical route to advertiser compensation. A high-profile enforcement complaint that quotes internal documents is, in practice, a roadmap for the plaintiffs' bar. Advertisers who believe they overpaid can bring their own claims, and a detailed public complaint makes those cases materially easier to plead. Nothing of the kind had been filed as of August 31, 2026, but this is the most likely path by which an individual seller ever sees a dollar.
Even on the fastest of those tracks, this is a multi-year story. For a sense of the distance between a filed complaint and money in hand, see our coverage of the FTC's earlier Prime enrollment case against Amazon.
What Happens Next
• Amazon's response. The company will answer or, far more likely, move to dismiss. Its public statement previews the defense: no reliance, no measurable harm.• The pass-through question. Whether advertising costs reached consumers is both the FTC's broadest claim and its hardest to prove. Watch whether it survives the pleadings.
• Follow-on private litigation. If advertiser class actions appear, they will likely be filed in the same district and may be related to this case.
• The separate antitrust case. This is not the FTC's monopolization suit against Amazon, which continues on its own schedule. Coverage that blends the two is describing different matters.
OCA will update this page as Amazon responds and as the docket moves.
Frequently Asked Questions
Is there a claim form or a payout for Amazon sellers?
No. This is a government enforcement complaint filed on August 31, 2026, not a class action settlement. There is no class, no settlement fund, no administrator, no claim form and no deadline. Nothing has been decided, and any site inviting sellers to file a claim over the Amazon ad surcharge is not describing anything that exists.
What is a second-price auction, and why does the difference matter?
In a second-price auction the highest bidder wins but pays only slightly more than the runner-up, so bidding your true maximum is safe — you will not be charged it unless someone else pushed the price that high. In a first-price auction the winner pays exactly what they bid, so bidders deliberately bid below their true value to avoid overpaying, a practice called bid shading. The complaint alleges Amazon told advertisers it ran the second-price format, which encouraged them to bid high, while its pricing increasingly charged them their own bid. Amazon disputes this characterization.
Who would have been affected by the alleged surcharge?
According to the complaint, more than one million brands and sellers who bid for Sponsored Products, Sponsored Brands or Display ad placements, including over 500,000 small and medium-sized businesses. The FTC also contends the higher advertising costs were largely passed on to American consumers through product prices, though shoppers are a step further removed from any recovery than the advertisers are.
If the FTC wins, does money go back to advertisers?
Not automatically, and the FTC’s own path to money is narrower than most people assume. In AMG Capital Management v. FTC (2021) the Supreme Court unanimously held that Section 13(b) of the FTC Act does not authorize equitable monetary relief such as restitution or disgorgement, leaving the agency to pursue money through Section 19, which generally requires an administrative cease-and-desist order or a rule violation first. The 22 state attorneys general are suing under their own consumer protection statutes, which in many states do allow restitution and civil penalties. Historically, the more direct route to compensation for advertisers would be their own private lawsuits.
What does Amazon say about the lawsuit?
Amazon strongly disagrees with the suit and has called it misguided. In a lengthy public statement the company said the FTC misrepresented how its ad auctions work and cherry-picked its findings, that the claim fundamentally misunderstands how advertisers operate because advertisers adjust bids based on real-world performance rather than descriptions of auction mechanics, and that the quality of its advertising improved while average cost-per-click stayed flat adjusted for inflation. Amazon also said it shared data with the FTC on multiple occasions. No court has ruled on any of it.
Is this the same as the FTC's antitrust case against Amazon?
No. This is a separate consumer protection case brought under Section 5(a) of the FTC Act and the deceptive trade practices statutes of the participating states, and it concerns advertising auction pricing rather than monopoly power. The FTC’s broader antitrust litigation against Amazon is a different matter on its own schedule.
Sources
• Federal Trade Commission — FTC, States Sue Amazon Over Secret Ad Surcharge Scheme (August 31, 2026)• Federal Trade Commission — Complaint, FTC and 22 States v. Amazon.com, Inc. (W.D. Wash., filed August 31, 2026)
• CNBC — FTC sues Amazon, accusing the e-commerce giant of misleading advertisers (August 31, 2026)
• CNN Business — FTC sues Amazon for allegedly overcharging advertisers on its platform (August 31, 2026) — includes Amazon's response
• NPR — U.S. sues Amazon over its advertising prices (August 31, 2026)
• U.S. Supreme Court — AMG Capital Management, LLC v. Federal Trade Commission, 593 U.S. ___ (2021)
• Congressional Research Service — AMG Capital Management v. FTC: Supreme Court Holds FTC Cannot Obtain Monetary Relief in Section 13(b) Suits
