- The Federal Trade Commission sued Amazon on Monday, alleging the company ran a secret ad pricing mechanism — internally described as a “floor price” system — that raised the minimum price advertisers had to pay for ad placements in Amazon’s auction system after bids had already been submitted; the FTC says the practice began in 2018 and caused advertisers to lose more than $20 billion, with consumers ultimately absorbing higher prices as sellers passed increased ad costs through to retail prices.
- Amazon responded that the lawsuit is “misguided” and that the FTC “fundamentally misunderstands how advertisers operate,” adding it looks forward to making its case in court — a response that signals Amazon will fight the case aggressively rather than seek a settlement, setting up a legal confrontation that could extend for years and reshape how online advertising auctions are regulated.
- Amazon’s advertising business has grown into one of the company’s most profitable divisions: Amazon Advertising generated more than $50 billion in revenue in 2025, with operating margins far exceeding those of the e-commerce and cloud businesses; the FTC lawsuit targets the core mechanics of that revenue engine, and a finding that the auction was manipulated could expose Amazon to both regulatory penalties and civil damages claims from advertisers.
- The FTC case adds to Amazon’s expanding legal exposure: the company already faces antitrust scrutiny over its marketplace practices and seller fee structures; the advertising suit opens a second front by arguing that Amazon abused its position as the dominant product search platform to extract above-market pricing from sellers who had no viable alternative to advertising on Amazon to reach consumers actively searching for products.
What Happened?
The FTC filed a federal lawsuit on Monday alleging Amazon deceived advertisers by secretly raising the minimum price floor in its ad auctions after bids had been entered — meaning advertisers paid more than their bids would have implied in a transparent auction. The practice allegedly began in 2018. The FTC says advertisers lost over $20 billion, and consumers paid higher prices as a result of sellers passing elevated ad costs through to retail pricing. Amazon called the lawsuit “misguided” and said it would contest the claims in court. Amazon shares fell 2.5% on the news.
Why It Matters?
Amazon’s advertising business is one of the most profitable in the world, and the FTC’s allegation — that it was built partly on a secret mechanism that extracted supra-competitive prices from advertisers with no viable alternative — is a direct challenge to the foundational legitimacy of that revenue. For advertisers (which include virtually every major consumer brand), the lawsuit validates years of private frustration with Amazon’s opaque auction mechanics and suggests there may be a legal path to recovering costs they overpaid. For Amazon investors, the $20 billion advertiser loss figure — which could inform damages claims — is the most concerning data point; even a fraction of that in civil damages would be material. For the broader digital advertising industry, the case signals that auction-based ad pricing systems — which are also used by Google, Meta, and others — are under heightened regulatory scrutiny as to whether their mechanics are genuinely transparent.
What’s Next?
Amazon will contest the case in court. The FTC’s lawsuit will go through discovery, where Amazon’s internal documents about the price floor system will become part of the evidentiary record — potentially revealing details about how widespread the practice was and which advertisers were most affected. Watch for advertiser coalitions to file parallel civil suits seeking damages once the FTC case establishes the factual predicate. The case also increases political pressure on the FTC to show enforcement wins in digital advertising ahead of the November midterms, which may accelerate the agency’s litigation timeline.
Source: The Wall Street Journal
