Subclass
A subclass is a smaller group inside a class action that has its own representative because its members' claims or interests differ from the rest.
Also called: subclasses, sub-class
A subclass is a smaller group inside a class action that has its own representative because its members' claims or interests differ from the rest.
What it means
A subclass is a smaller group carved out of a larger class in a class action. Rule 23(c)(5) says that, when appropriate, a class may be divided into subclasses, and each subclass is treated as its own class under the rule.
Courts use subclasses when one group in the class has different claims, is governed by different laws, or has interests that clash with other members. Common dividing lines are the state where someone lives, the type of harm, or when they bought. Each subclass needs its own qualified representative and has to meet the Rule 23 requirements on its own. In Amchem Products v. Windsor (1997), the Supreme Court faulted a class in which people with different interests were all represented as one giant group instead of discrete subclasses.
In a settlement, subclasses often show up as different payment levels. For example, residents of a state with a strong privacy law may receive a larger share than everyone else because their claims are stronger.
What it means for you
If your notice says you are in a subclass, your payment may be calculated differently from other class members. Compare each subclass definition with your own situation, because the question is often where you lived or what you did, and the claim form may ask. You may fit more than one group, so read how the settlement treats overlaps. If you think you have been placed in the wrong group, the settlement website's contact page or the administrator's help line is where to ask. The court-approved settlement and notice control who gets what.
Example
Say a privacy settlement covers all U.S. users of an app. Users in one state also have a claim under that state's biometric privacy law. The court creates a subclass for those residents, with its own representative, and the settlement sets aside a bigger share for them. Everyone else is in the main class and gets the standard payment.
FAQ
Their claims may be stronger, weaker or governed by different laws. A court can approve different payment levels if the settlement treats class members equitably relative to each other, which Rule 23(e)(2) requires.
Related terms
- Fed. R. Civ. P. 23, Class Actions (Cornell Legal Information Institute)
- Amchem Products, Inc. v. Windsor, 521 U.S. 591 (1997) (U.S. Reports, Library of Congress)
Updated Oct 18, 2026. Plain-English definitions for general information — not legal or tax advice.