Section 5 of the Federal Trade Commission Act, codified at 15 U.S.C. § 45, is the federal government’s broadest tool for policing commercial misconduct. It declares unlawful two separate categories of behavior: “unfair methods of competition” and “unfair or deceptive acts or practices” in or affecting commerce.1Office of the Law Revision Counsel. 15 USC 45 – Unfair Methods of Competition Unlawful The first is an antitrust tool aimed at anticompetitive business conduct; the second protects consumers from dishonest or harmful commercial practices. Together they give the Federal Trade Commission authority to act against everything from deceptive advertising to exploitative subscription traps, with per-violation civil penalties that now exceed $53,000.
The Two Prohibitions
Subsection (a)(1) of the statute contains both prohibitions in a single sentence.2Office of the Law Revision Counsel. 15 USC 45 – Unfair Methods of Competition Unlawful; Prevention by Commission They are distinct legal standards with different tests.
The consumer protection prong reaches deception and unfairness toward individual buyers. The competition prong functions as an antitrust enforcement tool, letting the FTC challenge business conduct that harms the competitive process even when no consumer was personally deceived. The Commission has used it against practices like invitations to collude and exclusive dealing arrangements that may not fit neatly under the Sherman Act or Clayton Act.
Who Section 5 Covers and Who It Does Not
The phrase “in or affecting commerce” gives Section 5 wide reach. It covers businesses, corporations, partnerships, and individuals engaged in trade across the country, and the vast majority of everyday commercial transactions fall within FTC jurisdiction.3Federal Trade Commission. About the FTC
Congress carved out specific industries. The statute itself excludes banks, savings and loan institutions, federal credit unions, common carriers regulated under transportation law, air carriers, and entities subject to the Packers and Stockyards Act.1Office of the Law Revision Counsel. 15 USC 45 – Unfair Methods of Competition Unlawful The insurance industry gets a separate exemption under the McCarran-Ferguson Act, which shields insurance activities from FTC jurisdiction to the extent those activities constitute “the business of insurance” and are already regulated by state law.4Federal Trade Commission. Opinion 03-1 Most nonprofits also sit outside FTC reach because the Act’s definition of “corporation” is limited to entities organized for profit.
These exemptions do not free the excluded industries to engage in unfair practices. Banks answer to the Consumer Financial Protection Bureau and other banking regulators that enforce the same standards. The carve-outs determine which agency does the enforcing, not whether the conduct is legal.
When a Practice Is Deceptive
The FTC applies a three-part test set out in its 1983 Policy Statement on Deception.5Federal Trade Commission. Deceptive and Unfair Acts and Practices Principles – Evolution and Convergence All three elements must be present for a practice to count as deceptive.
First, there must be a statement, omission, or practice likely to mislead consumers. The FTC does not have to prove anyone was actually deceived, only that the practice has the tendency to mislead. That can be an outright false statement about a product’s effectiveness or something subtler, like a checkout flow that hides key terms while making sign-ups effortless.
Second, the practice is evaluated from the perspective of a reasonable consumer acting under the circumstances. The FTC looks at the “net impression” of the entire advertisement or transaction, not the literal accuracy of isolated words. Fine print will not rescue a prominently misleading headline. When a practice targets a specific audience such as children or elderly consumers, the standard shifts to how a reasonable member of that group would perceive it.
Third, the misleading claim must be “material,” meaning it is likely to affect a purchasing decision. Claims about cost, quality, performance, health effects, or restrictions on use are inherently material, and the FTC presumes materiality for express claims and for anything touching health or safety. False weight-loss promises, bait-and-switch pricing, and hidden fees on a final checkout page are textbook material deception.
The FTC uses this same net-impression framework to evaluate “dark patterns” in digital commerce, including design tricks that fabricate scarcity, interfaces that bury fees, and checkout flows that enroll consumers in subscriptions without clear consent.6Federal Trade Commission. Bringing Dark Patterns to Light Staff Report A disclosure printed in light-gray text beneath a large green “Continue” button may be technically accurate and still deceptive.
The Substantiation Requirement
Tied closely to deception is a rule that trips up many advertisers. Companies must have a reasonable basis for objective claims before making them. Running an ad without adequate proof to back up its claims is itself a Section 5 violation under the FTC’s Policy Statement on Advertising Substantiation.7Federal Trade Commission. FTC Policy Statement Regarding Advertising Substantiation
A supplement company claiming its product “boosts immunity by 50%” needs competent scientific evidence supporting that specific claim in hand before the ad runs. Health and safety claims require competent and reliable scientific evidence; other claims may need less rigorous support. The baseline rule is the same for everyone: have the proof first, advertise second.
When a Practice Is Unfair
A practice can violate Section 5 without any deception if it is “unfair.” Congress codified the test at 15 U.S.C. § 45(n), and all three elements must be met.2Office of the Law Revision Counsel. 15 USC 45 – Unfair Methods of Competition Unlawful; Prevention by Commission
The practice must cause or be likely to cause substantial injury to consumers. That usually means monetary harm: unauthorized charges, billing for undelivered services, or data security failures that lead to identity theft. The injury does not have to be large for any one person; small charges extracted from millions of consumers add up to substantial injury.
The injury must be one consumers could not reasonably avoid. A company that buries a mandatory arbitration clause deep in a terms-of-service agreement, or that requires a phone call during limited hours to cancel a subscription, creates harm consumers cannot practically sidestep. The FTC does not expect people to hire lawyers or spend hours navigating deliberately confusing interfaces to protect themselves.
Finally, the harm must not be outweighed by benefits to consumers or competition. This balancing test rarely saves the practices the FTC challenges; data security negligence, coercive billing, and deceptive subscription traps do not generate meaningful offsetting benefits. The statute adds one caveat: the FTC may consider established public policies as evidence of unfairness, but public policy alone cannot be the primary basis for finding a practice unfair.1Office of the Law Revision Counsel. 15 USC 45 – Unfair Methods of Competition Unlawful
How the FTC Enforces Section 5
Before any action, the FTC investigates. Its primary investigative tool is the civil investigative demand under Section 20 of the Act, which can require a company to produce documents, answer written questions under oath, or give oral testimony.8Office of the Law Revision Counsel. 15 USC 57b-1 – Civil Investigative Demands Each demand must describe the conduct under investigation and the applicable law. A company has 20 days to petition the Commission to modify or set aside the demand, and if it refuses to comply, the FTC can go to federal court to enforce it.
Once a violation is confirmed, several paths are available.
Consent Orders
Most cases settle. A consent order is a negotiated agreement under which the company stops the challenged conduct and complies with specific requirements going forward, without admitting it broke the law. Consent orders are binding, and violating one triggers civil penalties.
Administrative Adjudication
If a company will not settle, the FTC can file an administrative complaint and litigate before an administrative law judge. A finding of violation produces a cease-and-desist order that legally compels the company to stop the practice and can impose affirmative obligations like corrective advertising or mandatory disclosures. Appeals run to the full Commission and then to a federal appeals court.
Federal Court Injunctions
When conduct is ongoing and consumers face immediate harm, the FTC can go directly to federal district court under Section 13(b) to seek a temporary restraining order or preliminary injunction, and in appropriate cases a permanent injunction.9United States Code. 15 USC 53 – False Advertisements; Injunctions and Restraining Orders Since the Supreme Court’s 2021 decision in AMG Capital Management v. FTC, Section 13(b) covers only forward-looking relief; it no longer supports orders requiring companies to pay money back to consumers.10Supreme Court of the United States. AMG Capital Management, LLC v. Federal Trade Commission
Penalties and Consumer Refunds
The financial consequences of a Section 5 violation depend on which pathway applies.
A business that violates a final cease-and-desist order, or knowingly violates a trade regulation rule, faces civil penalties of up to $53,088 per violation as of the January 2025 adjustment.11Federal Register. Adjustments to Civil Penalty Amounts Each instance of the unlawful practice counts as a separate violation, so a deceptive campaign that reaches millions of consumers can generate enormous aggregate penalties. The amount is adjusted for inflation every January.
The FTC also uses Section 5(m)(1)(B) to reach companies that have never been subject to a cease-and-desist order themselves. Under that provision, the Commission can seek civil penalties against any company that engages in conduct the FTC has already found to be unfair or deceptive in a prior administrative decision, provided the company knew the conduct was unlawful. To establish knowledge, the FTC sends “Notices of Penalty Offenses” listing specific prohibited practices drawn from past decisions.12Federal Trade Commission. Notices of Penalty Offenses Receiving a notice does not mean the FTC believes the recipient is currently breaking the law; it puts the company on notice so per-violation penalties can attach if the conduct occurs later.
To get money back into consumers’ pockets, the FTC relies on Section 19. That provision allows the Commission to sue in federal court for consumer redress after an administrative cease-and-desist order becomes final, but only if a reasonable person would have known the conduct was dishonest or fraudulent.13Office of the Law Revision Counsel. 15 USC 57b – Civil Actions for Violations of Rules and Cease and Desist Orders Respecting Unfair or Deceptive Acts or Practices Courts can order refunds, contract rescission, return of property, and damages, though not punitive damages. Section 19 also authorizes redress for violations of trade regulation rules without the “dishonest or fraudulent” showing.
Before 2021, the FTC routinely used Section 13(b) to obtain restitution directly in federal court, bypassing the slower administrative process. The Supreme Court shut that door in AMG Capital Management, holding unanimously that Section 13(b)’s authorization of “permanent injunctions” covers only forward-looking relief.10Supreme Court of the United States. AMG Capital Management, LLC v. Federal Trade Commission The Court reasoned that letting money flow through Section 13(b) would let the Commission bypass the conditions Congress built into Section 19. The ruling forced the FTC back to the administrative route for refunds and raised the strategic importance of penalty offense notices and trade regulation rules.
No Consumer Lawsuits Under Section 5
One thing Section 5 does not do is let consumers sue. Only the FTC can enforce the statute directly; there is no private right of action.14Federal Trade Commission. Follow-On State Actions Based on the FTCs Enforcement of Section 5 A consumer who believes a company engaged in deceptive practices cannot file a federal lawsuit citing Section 5. Consumers can file complaints with the FTC, which uses the data to identify patterns and prioritize investigations, but individual legal recourse comes from state law.
Nearly every state has its own consumer protection statute, often called a “Little FTC Act” because many were modeled on Section 5’s language. Around 29 states incorporate the FTC’s interpretation of Section 5 into the construction of their own statutes, so FTC enforcement actions and legal interpretations often ripple into state proceedings. Many state statutes provide the private right of action Section 5 lacks, some authorize doubled or trebled damages for willful violations, and a handful make treble damages mandatory. State attorneys general can also bring enforcement actions under their own statutes and often coordinate with the FTC on investigations targeting the same company.