| Primary federal consumer protection agency | Federal Trade Commission (FTC) |
| Standard cooling-off period (FTC Rule) | 3 business days (FTC Cooling-Off Rule (16 CFR Part 429)) |
| Law governing written product warranties | Magnuson-Moss Warranty Act (1975) (15 U.S.C. § 2301 et seq.) |
| Fair Credit Billing Act dispute window | 60 days from statement date (15 U.S.C. § 1666) |
| Lemon law coverage varies by | State — all 50 states have some form |
| Consumer complaints: where to report | FTC at reportfraud.ftc.gov |
Why These Terms Matter
Consumer protection law in the United States is a patchwork of federal statutes, agency rules, and state-level regulations. Together, they create a framework of rights that apply every time you buy a product or hire a service — but those rights only help you if you know they exist.
This glossary defines the core legal terms you're most likely to encounter when a purchase goes wrong, when you're reviewing a contract, or when you want to understand what a retailer's policy actually obligates them to do. Each definition reflects general legal usage; specific applications depend on your state and the facts of your situation.
For a practical look at how these rights apply in real scenarios, see when consumer law is clearly on your side.
Implied Warranty
An unwritten, automatic guarantee created by law rather than a written agreement. The most common form — the 'implied warranty of merchantability' — means a product must work for its ordinary intended purpose, even if the seller never made that promise in writing.
Express Warranty
A specific, stated promise about a product made by the seller or manufacturer, either orally or in writing. If a product fails to meet that promise, the consumer may have a legal claim. Advertising claims can sometimes constitute an express warranty.
Cooling-Off Period
A legally mandated window — typically three business days under the FTC's Cooling-Off Rule — during which a consumer may cancel certain purchases without penalty. It most commonly applies to door-to-door sales over $25 and some telephone sales, not to most retail store purchases.
Magnuson-Moss Warranty Act
A federal law governing written warranties on consumer products sold in the US. It requires that warranties be available before purchase, be written in plain language, and be designated as either 'full' or 'limited.' It also limits what sellers can do to disclaim implied warranties.
Lemon Law
State-level statutes that provide remedies — typically a replacement or refund — when a new vehicle has a substantial defect that the manufacturer cannot repair after a reasonable number of attempts. Rules vary considerably by state, and some states extend protections to used vehicles.
Chargeback
A reversal of a credit or debit card transaction initiated by the card-issuing bank, typically at the cardholder's request. Under the Fair Credit Billing Act, consumers have the right to dispute billing errors and, in some cases, unauthorized or undelivered charges.
Unfair or Deceptive Acts and Practices (UDAP)
A broad legal standard under Section 5 of the FTC Act prohibiting business conduct that is deceptive, misleading, or materially unfair to consumers. Most states have their own UDAP statutes, which sometimes offer stronger private remedies than federal law.
Right of Rescission
The legal right to cancel a contract within a specified period without penalty. Under the Truth in Lending Act, this right applies to certain home-equity loans and refinances, giving homeowners three business days to reconsider.
Class Action
A lawsuit in which a large group of consumers with similar claims sue a defendant collectively. Class actions allow individuals to pursue claims that would be economically impractical to litigate alone, and settlements can provide compensation or product remedies to affected consumers.
Arbitration Clause
A contract provision requiring disputes to be resolved by a private arbitrator rather than in court. Many consumer contracts include mandatory arbitration clauses; these can limit a consumer's ability to join a class action or appeal an unfavorable outcome.
Statute of Limitations
The legally set deadline by which a consumer must file a claim or lawsuit. After this window closes, the right to sue is typically lost regardless of the merits of the case. Timelines vary by claim type and state law.
FTC (Federal Trade Commission)
The primary federal agency responsible for enforcing consumer protection law in the US. The FTC investigates deceptive advertising, data privacy violations, and unfair business practices, and issues rules that govern many common consumer transactions.
At a Glance: Key Facts About Consumer Law
Before diving deeper, the quick-reference card below captures some grounding figures and context about the consumer protection landscape in the US.
| Primary federal consumer protection agency | Federal Trade Commission (FTC) |
| Standard cooling-off period (FTC Rule) | 3 business days (FTC Cooling-Off Rule (16 CFR Part 429)) |
| Law governing written product warranties | Magnuson-Moss Warranty Act (1975) (15 U.S.C. § 2301 et seq.) |
| Fair Credit Billing Act dispute window | 60 days from statement date (15 U.S.C. § 1666) |
| Lemon law coverage varies by | State — all 50 states have some form |
| Consumer complaints: where to report | FTC at reportfraud.ftc.gov |
For terms specific to retail promotions and markdowns, the glossary of discount terms and what they signal is a useful companion. And if your question centers on what a warranty document actually covers, warranty terms and what they actually cover breaks down the legalese clearly.
This Glossary Is Educational, Not Legal Advice
Definitions here reflect general legal usage under US federal and broadly applicable state frameworks. Consumer protection law varies significantly by state, and the facts of your specific situation will determine what rights apply. If you believe your consumer rights have been violated, consider consulting a licensed attorney or contacting your state attorney general's consumer protection office.
Understanding cooling-off periods deserves particular attention. The rules vary significantly by transaction type — how cooling-off periods work and when they don't apply covers the details and the key exceptions.