The settlement pairs a major payment with new teen-safety commitments and a financial incentive for rival platforms to adopt similar rules.

Meta has agreed to pay states up to $17.1 billion and change how teenagers use Facebook and Instagram, settling sweeping claims that its products were designed in ways that could be addictive and harmful to young people.

The agreement covers 47 states, the District of Columbia and three U.S. territories. Meta is set to pay an initial $12 billion over 10 years, with another $5 billion tied to whether YouTube, TikTok and Snap reach comparable settlements with states, accept similar financial penalties and adopt related youth-safety measures.

The deal calls for stronger age checks, tighter limits on young users’ time on the platforms and restrictions on nighttime use, among other protections. Meta said the framework would give parents more control and argued that it will be most effective if competing platforms participate.

That structure is central to why policy advocates see the settlement as potentially consequential beyond Meta. Rather than only resolving claims against one company, it attempts to establish a baseline for the broader social-media industry through litigation and negotiated terms.

Still, the settlement is not the same as a nationwide law. Digital-rights advocates have cautioned that rules such as age verification can create privacy and free-expression concerns if they require companies to collect additional information about users. Federal child-online-safety legislation has repeatedly stalled even as states have pursued their own restrictions.

The agreement also arrives after a series of court cases and settlements involving social-media companies and alleged harms to children. The public evidence produced in those cases, including internal company material, may inform future lawsuits and legislation. Whether the Meta deal becomes a durable industry standard will depend in part on enforcement, court processes and whether other major platforms accept comparable obligations.