US Regulators Sue Amazon Over Alleged Hidden Advertising Surcharges

The Federal Trade Commission joined forces with twenty two states to file a major legal complaint against Amazon. The lawsuit claims the retail giant engaged in deceptive practices that secretly inflated costs within its online search advertising auctions. According to the filing, the company spent more than seven years covertly increasing the amounts that over one million brands and sellers had to pay to promote their products on the platform.

Regulators claim this alleged scheme extracted tens of billions of dollars from unsuspecting businesses. Advertisers depend heavily on these promotions, bidding to place their listings next to results that appear when shoppers search for specific items on the store. The legal action states that the retailer took advantage of this reliance by rigging the system.

Hidden Surcharges and Manipulated Auctions

The controversy centers around how the company handled its advertising sales. The retailer repeatedly told clients it ran a generalized second price auction. Under this industry standard model, the winning bidder is supposed to pay just one cent more than the second highest offer. Advertisers built their budgets and strategies around this specific promise.

The legal filing argues the reality looked much different. Regulators allege that beginning in 2019, the company altered its internal rules without notifying anyone. They added an undisclosed fee referred to internally as a soft reserve price. This addition forced winners to pay much more than the amount determined by a fair bidding process.

According to internal documents quoted in the complaint, executives made this surreptitious change because they were unhappy with the amount of money the advertising division was generating. One executive reportedly explained that the final cost was not set by an actual bidder, but was instead calculated by the company. Another document allegedly showed the company using an invented participant to push bids higher. The agency describes these actions as equivalent to using a shill bidder to artificially raise costs.

The Financial Impact on Advertisers

Over the past few years, the percentage of time that advertisers ended up paying their absolute maximum bid climbed drastically. The complaint notes that in 2021, sellers paid their maximum amount between thirty and forty percent of the time. By 2024, that figure jumped to roughly eighty percent. The agency attributes this massive jump directly to the hidden surcharges.

The legal team claims this system generated tens of billions of dollars in extra revenue. The company reportedly applied even steeper increases during busy shopping periods like Prime Day. Internal messages suggest executives knew this clever, non transparent method served as an incredibly effective way to increase their bottom line.

You can read more about how regulatory bodies are scrutinizing major technology platforms by reviewing recent technology updates from Reuters regarding ongoing antitrust investigations.

Covering Up the Strategy

The complaint also accuses the retailer of actively hiding the system from its clients. Executives allegedly provided misleading answers when advertisers asked if the auction format had changed. Internal notes revealed that management feared exposing the truth would cause irrevocable damage to client trust. They worried a downward spiral would occur where advertisers lowered their bids, leading to dramatic revenue losses.

Federal Trade Commission Chairman Andrew Ferguson released a statement highlighting the staggering impact of these actions. He noted that millions of advertising customers were misled into paying higher prices, and those extra expenses were largely passed down to American shoppers.

The Company Pushes Back

Representatives for the retailer strongly disagree with the allegations. They called the lawsuit misguided and argued that the agency completely misunderstands how modern advertising operates. According to their official statement, average winning bids for sponsored product ads actually dropped fifty percent between 2019 and 2025.

The company maintains that clients adjust their spending based on real world performance rather than detailed auction mechanics. They also stated that their system prioritizes relevance over sheer spending power. The retailer estimates this focus on relevance saved their clients over eight billion dollars during a four year span. The case will now move forward in the United States District Court for the Western District of Washington, where legal teams will debate exactly how the massive advertising machine operates behind closed doors.