
What Is a Class Gift?
A trust says “to A’s grandchildren.” A grandchild is born every couple of years for the next two decades. Who counts? A class gift answers that question by letting membership expand and contract based on a shared description, rather than fixing a list of names on day one — and California has detailed rules for exactly when that flexibility ends.
A class gift is a gift to a group identified by relationship or status — “my children,” “my grandchildren who reach age 21” — rather than to named individuals. Each qualifying member shares in the gift, and new members can join the class until it closes under California’s rule of convenience.
Class Gift vs. Individual Gift
The threshold question on any trust instrument fact pattern is whether the drafter created a class gift or a set of individual gifts.
| Feature | Class Gift | Individual Gift |
|---|---|---|
| Language | “To A’s children” | “To John, Mary, and Sarah” |
| New members can join | Yes, until the class closes | No — fixed at drafting |
| Shares | Divided among however many qualify | Fixed per named person |
| Effect of a member’s death before vesting | Share typically stays in the class | Share may lapse or pass under an anti-lapse statute |
The Rule of Convenience: When Does a Class Close?
California follows the traditional rule of convenience to prevent a class gift from staying open forever, which would make distribution practically impossible. A class closes automatically at the earlier of:
- The first distribution to any class member, or
- The vesting of the last class member’s interest (when it becomes unconditional).
Once the class closes, later-born individuals who would otherwise fit the description are excluded — even if they are born the day after closure. For “to A’s children who reach age 21,” the class closes the moment the first child turns 21 and becomes entitled to a distribution; any child of A born after that date is shut out, no matter how well they otherwise fit the description.
Vested Subject to Open
Before a class closes, existing members hold interests that are vested subject to open — vested in the sense that their right to eventually receive something is secure, but subject to partial reduction (or “partial divestment”) as new members are born and join the class, shrinking everyone’s share. Once the class closes, all interests convert to fully vested shares that cannot shrink further.
The Fertile Octogenarian Problem
This is the doctrine most likely to appear as a Rule Against Perpetuities trap wrapped inside a class gift question. The classic setup: “to A’s children who reach age 30,” where A is still young (or even elderly — the law conclusively presumes anyone can have a child, regardless of age or medical reality, hence “fertile octogenarian”). If it is even theoretically possible for a class member to be born after the trust’s creation and take more than 21 years beyond a life in being to reach age 30, the gift threatens the rule against perpetuities.
Critically, infectious invalidity means that if even one hypothetical class member could vest too late, the entire class gift fails — not just that member’s share. This all-or-nothing consequence is one of the most heavily tested traps in California Bar Exam trusts questions.
Per Stirpes and Distribution by Representation
When a class member dies before the gift vests, California’s default distribution rule for “by representation” gifts sends that member’s share down to their own descendants, split at the generational level — a modified form of the traditional per stirpes approach. This differs from strict per capita distribution, where every surviving member at a given level takes an equal share regardless of how many children a deceased member left behind.
Worked Example
A trust provides: “Income to my son Marcus’s children who reach age 30, distributed as each turns 30.” At trust creation, Marcus has two children, Ivy (age 5) and Sam (age 3). Marcus, though already 60, is legally capable of having more children under the fertile octogenarian rule.
Because Marcus could theoretically have another child after the trust’s creation, and that hypothetical child could reach age 30 more than 21 years after every life in being at the trust’s creation has died, the gift risks violating the Rule Against Perpetuities. Under infectious invalidity, the entire class gift — not just a hypothetical later-born child’s share — fails, unless California’s “wait and see” or reformation-style perpetuities reforms save it in practice. Careful drafting (capping the age at 21, or using a “living children” limitation) avoids the trap entirely.
Drafting Lessons for California Practitioners
The safest class gift language ties vesting to a life in being rather than a fixed age above 21, or expressly limits the class to descendants living at the settlor’s death. Both approaches eliminate the fertile octogenarian problem before it can arise, without needing to rely on courts to save a defective gift after the fact.
FAQ
When exactly does a class gift close under California’s rule of convenience?
It closes at the earlier of the first distribution to any class member or the vesting of the last member’s interest — whichever happens first.
What happens if just one potential class member could vest outside the perpetuities period?
The entire class gift fails under the doctrine of infectious invalidity, not just the share belonging to the late-vesting hypothetical member.
Is “vested subject to open” the same as fully vested?
No. It means the class member’s interest is secure but can still shrink as new members are born and join before the class closes. Once the class closes, the interest becomes fully vested and can no longer shrink.
Key Takeaways
- A class gift is defined by description (“my children”), not by naming specific individuals, and its membership can expand until the class closes.
- California’s rule of convenience closes a class at the first distribution or when the last member’s interest vests, whichever comes first.
- “Vested subject to open” interests can shrink as new members join; once closed, all interests become fully vested.
- The fertile octogenarian problem can trigger infectious invalidity, killing the entire class gift under the Rule Against Perpetuities.
- Careful drafting — age caps at or under 21, or limiting the class to living descendants — avoids the trap.
This article is educational and is not legal advice. Consult a licensed California attorney about your situation.
Related guides
- rule against perpetuities
- will integration doctrine
- intestate succession in California
- trustee duties in California

