Summary. Advertising law is unusual: the same claim can be attacked by a regulator, a competitor, a consumer class, a self-regulatory body, and a platform, each applying a different standard and offering a different remedy. This toolkit organizes compliance around that reality — the substantiation file that must exist before a claim runs, the claim types that draw enforcement, the endorsement and review rules, pricing and negative option practices, channel-specific rules for email and text, promotions, comparative advertising, the internal review process, and what to do when a demand letter or civil investigative demand arrives.

What this toolkit is for, and who should use it

Marketing moves faster than legal review, which is why the compliance question is never "is this claim lawful?" in the abstract but "what does the organization do, routinely, before a claim runs?" A company that has a substantiation file, a review workflow, and an influencer contract template will make occasional mistakes. A company without them will make systematic ones, and systematic ones are what draw enforcement.

This toolkit is for in-house counsel, marketing leaders, and outside counsel advising consumer-facing businesses. It is US-focused, and it flags where a claim that is fine in one channel is not fine in another.

Roadmap at a glance

  1. The baseline — deception, unfairness, and who enforces.
  2. Substantiation — the file that must exist first.
  3. High-risk claim types.
  4. Endorsements, influencers, and reviews.
  5. Pricing, discounts, and negative option.
  6. Channels — email, text, calls, and platforms.
  7. Promotions — sweepstakes, contests, and giveaways.
  8. Comparative advertising and competitor claims.
  9. The internal review process.
  10. When a challenge arrives.

Stage 1 — The baseline

Section 5 of the FTC Act, 15 U.S.C. § 45, prohibits unfair or deceptive acts or practices. A claim is deceptive if it contains a representation, omission, or practice likely to mislead a consumer acting reasonably under the circumstances, and the representation is material — likely to affect a purchase decision. A practice is unfair if it causes or is likely to cause substantial injury that consumers cannot reasonably avoid and that is not outweighed by countervailing benefits, 15 U.S.C. § 45(n).

Two points drive most analysis. First, claims include what is implied, not just what is stated: the net impression of the whole advertisement governs, including images, sounds, product names, and juxtaposition. Second, disclosures must be clear and conspicuous — proximate to the claim, in the same medium, unavoidable, in plain language, and not contradicted by other content. A disclosure in a footnote that qualifies a headline claim is generally not a cure.

Then map the enforcers: the FTC; state attorneys general under state UDAP statutes, which frequently allow private suits with statutory damages and fee-shifting; competitors under Lanham Act § 43(a), 15 U.S.C. § 1125(a); consumer class actions; the National Advertising Division of BBB National Programs, whose process is fast and whose referrals to the FTC carry weight; and platform policies, which can remove an ad or an account without any legal process at all.

Resources

Stage 2 — Substantiation

The rule is simple and widely ignored: you must have the substantiation before the claim runs. Post hoc support does not cure an unsubstantiated claim.

For health, safety, and efficacy claims, the standard is competent and reliable scientific evidence — testing, analyses, research, or studies conducted and evaluated in an objective manner by qualified persons, using procedures generally accepted in the profession to yield accurate and reliable results. For many health claims, that means well-controlled human clinical testing, and consent orders in the space have required randomized, controlled human trials for specific claim types.

For performance claims, the support must match the claim as consumers understand it, in the conditions consumers will experience.

Build a claim substantiation file for each claim: the claim as it will appear, the interpretation the company believes consumers will take, the evidence, an expert's assessment where the claim is technical, and the approval. Keep it for as long as the claim runs plus the limitations period. It is the first thing an FTC civil investigative demand asks for.

Beware claim drift: marketing shortens "clinically shown to reduce the appearance of fine lines in 8 weeks" to "clinically proven to erase wrinkles," and the substantiation no longer supports what is being said.

Stage 3 — High-risk claim types

  • Health and wellness: disease claims can convert a product into an unapproved drug under the FDCA, bringing the FDA into a matter that started as an advertising question. Structure/function claims for supplements require the statutory disclaimer and substantiation.
  • "Made in USA": the FTC's standard is that all or virtually all of the product is made in the United States, and the Made in USA Labeling Rule authorizes civil penalties. Qualified claims must be accurate about the specific domestic content.
  • Environmental claims: apply the Green Guides. "Recyclable," "compostable," "biodegradable," "carbon neutral," and unqualified "green" or "eco-friendly" claims each have specific requirements, and general environmental benefit claims are difficult to substantiate.
  • Free: "free" requires that the consumer pay nothing and that the regular price of the accompanying purchase not be increased; all conditions must be disclosed clearly and near the word.
  • Guarantees and warranties: disclose the material terms, and comply with the Magnuson-Moss Warranty Act for written warranties on consumer products.
  • Earnings and income claims: business opportunity and franchise contexts carry specific disclosure obligations, and the FTC treats atypical results claims aggressively.
  • Country of origin, awards, certifications, and "clinically proven": each requires that the underlying fact be true and current.
  • AI claims: representing that a product uses AI, or that AI produces particular results, must be accurate and substantiated — "AI washing" is an active enforcement priority.

Stage 4 — Endorsements, influencers, and reviews

The revised Endorsement Guides, 16 C.F.R. pt. 255, and the FTC's rule on consumer reviews and testimonials reshaped this area.

  • Disclose material connections — payment, free product, employment, family relationship, or any other connection that would affect the weight consumers give the endorsement. Disclosure must be clear and conspicuous, in the endorsement itself, and understandable: "#ad" placed at the start is workable; "#sp" buried among thirty hashtags is not. In video, disclose in both audio and visual form for content that may be viewed either way.
  • Endorsements must reflect honest opinions and actual experience. An endorser who never used the product cannot endorse it.
  • Results claims in endorsements must reflect what consumers generally achieve, or disclose the generally expected performance — a disclaimer that "results are not typical" is no longer sufficient on its own.
  • Do not write, buy, sell, or suppress reviews. The FTC's rule prohibits fake and AI-generated reviews, reviews by insiders without disclosure, buying positive or negative reviews, review suppression through unfounded legal threats or selective publication, and misrepresenting that a review site is independent.
  • Employee reviews require disclosure of the employment relationship, and the company must train employees accordingly.
  • Incentivized reviews must disclose the incentive, and the incentive must not be conditioned on the review being positive.
  • Monitor your influencers. Advertisers are responsible for what their endorsers say, so contract for compliance, provide the disclosure language, and audit.

Resources

Stage 5 — Pricing, discounts, and negative option

Reference prices — "was $200, now $99" — require that the former price be a bona fide price at which the item was offered for a reasonably substantial period. Perpetual sales and invented list prices generate class actions in California and elsewhere with statutory remedies.

"Up to" claims require that a meaningful proportion of consumers achieve the stated maximum. Limited-time offers must actually be limited.

Drip pricing and junk fees. Disclose the total price, including mandatory fees, up front. Rules and state statutes increasingly require the advertised price to be the price a consumer can actually pay.

Negative option and auto-renewal. ROSCA, 15 U.S.C. §§ 8401-8405, and state auto-renewal statutes require clear disclosure of the material terms before obtaining billing information, express informed consent, and a simple mechanism to cancel. The direction of the law is consistent: cancellation must be at least as easy as sign-up, and in the channel used to sign up.

Dark patterns. Symmetric accept and decline options, no pre-checked boxes, no confirmshaming, no hidden costs, no obstructed cancellation, and no interface that makes the disfavored choice hard to find. This is now a named enforcement theory rather than a design critique.

Resources

Stage 6 — Channels

Email. CAN-SPAM, 15 U.S.C. §§ 7701-7713: accurate header and routing information, non-deceptive subject lines, identification as an advertisement where required, a valid physical postal address, a functioning opt-out honored within 10 business days, and responsibility for what affiliates send on your behalf.

Text and calls. The TCPA, 47 U.S.C. § 227, requires prior express written consent for marketing texts and autodialed or prerecorded marketing calls, with the consent disclosures the rule specifies. Honor opt-outs immediately. Scrub against the National Do Not Call Registry and internal lists. TCPA class exposure is severe because damages are statutory and per message — $500, trebled for willful violations.

Platforms and app stores impose their own advertising policies, which are often stricter than the law and enforced without notice. Read them for each channel you use.

Retargeting and adtech implicate privacy law as much as advertising law: honor opt-out signals, confirm tags are actually suppressed, and check that your consent management platform does what the privacy policy says. See State Consumer Privacy Laws.

Children. COPPA governs collection from children under 13; the CARU self-regulatory guidelines govern advertising directed to children; and several states impose age-appropriate design obligations.

Stage 7 — Promotions

Distinguish a sweepstakes (prize, chance, no consideration), a contest (prize, skill, consideration permitted in most states), and an unlawful lottery (prize, chance, and consideration together). Remove one element deliberately, usually consideration, through a genuine alternate method of entry given equal dignity.

Publish official rules with eligibility, entry period and method, odds, prize description and approximate retail value, winner selection and notification, publicity and privacy terms, and the sponsor's identity. Address registration and bonding in Florida and New York above the statutory prize thresholds, and Rhode Island's retail requirement. Confirm tax reporting for prizes at or above the reporting threshold, and address platform-specific promotion rules.

Stage 8 — Comparative advertising and competitor claims

Comparative advertising is lawful and useful, and it invites a Lanham Act § 43(a) suit from the target. The elements are a false or misleading statement of fact in commercial advertising, deception or a tendency to deceive, materiality, interstate commerce, and injury. Lexmark International, Inc. v. Static Control Components, Inc., 572 U.S. 118 (2014), sets the zone-of-interests and proximate-cause test for standing.

A literally false claim needs no consumer survey; a claim that is literally true but misleading requires evidence of actual consumer deception, usually a survey. Substantiate every comparison with head-to-head testing under the conditions the ad implies, and keep the protocol.

Use the competitor's trademark accurately and only as needed to identify the product — nominative use is permitted, disparagement of the mark is a different matter. Consider the NAD as a forum: it is faster and cheaper than litigation, and it takes both offense and defense seriously.

Resources

Stage 9 — The internal review process

Build a workflow that a marketing team will actually follow: a claim intake form; a risk tier that routes routine claims to a trained marketing reviewer and high-risk claims to counsel; a substantiation repository; approved claim language for recurring claims; templates for influencer agreements, sweepstakes rules, and disclosures; and a final-asset check confirming the approved language is what actually shipped.

Add training for marketing, social, and customer support, and a rule that no claim goes live without a recorded approval and a substantiation reference. Re-review claims annually and whenever the product, the evidence, or the law changes.

Stage 10 — When a challenge arrives

  • Demand letter from a competitor: preserve documents, assess the claim honestly, pull the substantiation file, and respond on a timeline that reflects the actual risk of injunctive relief.
  • NAD challenge: the process is fast and document-based. Participate; non-participation results in a referral to the FTC.
  • Civil investigative demand or state AG subpoena: engage counsel immediately, negotiate scope, issue a litigation hold, and produce carefully. Anything you say in response is a statement to a regulator.
  • Class action: expect claims under state UDAP statutes, express and implied warranty, and unjust enrichment, with a damages model tied to a price premium.
  • Platform removal: appeal through the platform's process, and fix the underlying claim rather than relaunching it elsewhere.

In every case, the first question is the same: produce the substantiation file. If it exists and supports the claim as consumers would understand it, the matter is usually manageable. If it does not, the strategy is remediation, not argument.

Resources

Stage 11 — Remedies and exposure, so the budget conversation is short

Marketing teams weigh compliance against speed. The weighing is easier when the downside is quantified.

FTC. After AMG Capital Management, LLC v. FTC, 593 U.S. 67 (2021), the Commission cannot obtain equitable monetary relief under Section 13(b), but it retains other routes: administrative proceedings with cease-and-desist orders, civil penalties for violating a rule or an existing order, redress under Section 19 following a rule violation, and the Penalty Offense Authority under Section 5(m)(1)(B), which the FTC has revived by sending notices of penalty offenses about deceptive endorsements, earnings claims, and money-making opportunities to hundreds of companies. A company that received such a notice and then engages in the conduct faces civil penalties per violation.

States. State UDAP statutes typically allow the attorney general to seek injunctive relief, restitution, and civil penalties, and most allow private suits with statutory minimum damages, and attorney's fees. That combination is what makes consumer class actions economically viable on small individual harms.

Competitors. Lanham Act remedies include injunctive relief, the defendant's profits, damages (which may be trebled), and, in exceptional cases, attorney's fees. Corrective advertising is available in some circuits. The injunction is usually the point: an order pulling a campaign mid-flight costs more than the judgment.

Class actions. The typical damages theory is a price premium — the difference between what consumers paid and what the product was worth without the misrepresentation — supported by conjoint analysis. Certification fights turn on whether the claim was uniformly conveyed and whether damages can be measured classwide under Comcast Corp. v. Behrend, 569 U.S. 27 (2013).

TCPA. $500 per violation, trebled to $1,500 for willful or knowing violations, per message. A single non-compliant text campaign to 50,000 numbers is a nine-figure theoretical exposure and a very real settlement.

Platforms. Account suspension or ad-account termination, imposed unilaterally and often without a meaningful appeal, which for a company that acquires customers through one channel is an existential rather than a legal problem.

Insurance. Check the general liability policy's "personal and advertising injury" coverage and its exclusions — most exclude breach of contract, failure to conform to statements of quality, and, importantly, claims arising out of the insured's own advertising of its goods. Media and technology E&O may respond where CGL does not. See Business Insurance and Coverage Disputes.

Illustration. A supplement company runs "clinically proven to boost immunity" across paid social for six months. A competitor files a NAD challenge; the FTC opens an inquiry after the NAD referral; a consumer class action follows within three weeks of the first press coverage; and the ad platform suspends the account under its health-claims policy. Four proceedings, four standards, one substantiation file — which either exists or does not.

Resources

Master resource index

Articles

Checklists

Related toolkits

External and primary sources

This toolkit is educational and not legal advice. Advertising rules differ by product category, channel, and state, and enforcement priorities change. Consult qualified counsel before launching a campaign that makes health, environmental, earnings, or comparative claims.