Amazon Faces $20 Billion Lawsuit Over Alleged Ad Auction Price Manipulation

Quick Overview

Table of Contents

Federal regulators and 22 states launched legal action against Amazon Monday, alleging systematic inflation of advertising costs
The e-commerce giant allegedly manipulated minimum bid prices in online ad auctions without advertiser knowledge
Regulators claim more than $20 billion in excess charges to 1.2 million advertisers following 2019 policy changes
The complaint states Amazon directly interfered in as many as 80% of sponsored product advertising auctions
Federal authorities are pursuing damages in the “tens of billions”; Amazon firmly rejects all allegations

Federal regulators joined forces with 22 states from both political parties Monday to file legal action against Amazon, alleging the company orchestrated a multi-year operation to artificially inflate advertising costs for over one million businesses.

FTC & 22 STATES TO SUE $AMZN OVER ALLEGED SECRET AD PRICE HIKES

The FTC is expected to allege Amazon manipulated its ad auctions by inserting its own “soft reserve” bid above the runner-up bid, effectively raising the minimum price advertisers had to pay.

The practice… pic.twitter.com/ffXicNdmxx

— Wall St Engine (@wallstengine) August 31, 2026

The legal filing was submitted to the U.S. District Court for the Western District of Washington.

The Core Allegations Against Amazon

The lawsuit focuses on three advertising categories: sponsored products, branded advertisements, and display advertisements. These promotional placements surface next to search results when customers browse for items on Amazon.

Federal regulators allege Amazon modified its bidding system in 2019 and subsequently began covertly increasing the floor prices required to secure advertising positions.

The legal filing claims Amazon occasionally submitted its own competing bids within these auctions, artificially elevating expenses for other advertisers operating in the dark.

The FTC asserts that Amazon directly manipulated up to 80% of all sponsored product advertising auctions.

As advertisers faced higher costs, businesses compensated by raising product prices, ultimately passing those expenses onto shoppers, regulators contend.

Federal authorities estimate advertisers were excessively charged by no less than $20 billion and are pursuing total damages in the “tens of billions.”

Amazon’s Defense

The company rejected these claims in a statement released Monday on its corporate blog.

Amazon maintains its advertising framework prioritizes displaying the most pertinent ads to customers rather than artificially boosting expenses.

The tech giant reported that average cost-per-click metrics remained unchanged from 2019 through 2024, while conversion revenue from those clicks actually increased.

Amazon further stated it delivered approximately $8 billion in savings to advertisers spanning 2021 to 2025, noting that average successful bids for sponsored product search advertisements declined by 50% between 2019 and 2025.

“Amazon’s approach to pricing contradicts any suggestion of consumer harm,” the company said.

This represents the second major FTC legal challenge Amazon currently faces, with another lawsuit targeting alleged monopolistic pricing practices and third-party seller relationships scheduled for trial next year.

In a previous settlement last year, Amazon paid $2.5 billion to resolve FTC accusations of misleading customers into Prime membership subscriptions.

Amazon currently ranks as the third-largest digital advertising platform globally, trailing only Google and Meta. The company’s advertising revenue surged 26% during the second quarter of this year, reaching $19.8 billion.

Amazon stock declined approximately 2.5% Monday after the lawsuit became public.

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