Should a foundation promise to last—or promise to close?

Should a philanthropic foundation exist forever, close on a predetermined date, or let future boards decide? Christian Jaag’s theoretical preprint argues that each arrangement can be preferable under different conditions. The central question is not how long generosity should last, but whose decisions a lifespan rule changes.

Foundations possess more than financial assets. They can build specialized teams, selection procedures, institutional memory and relationships. Those capabilities may lose their value when the organization closes. Yet future governors might also preserve an institution because they value its jobs, control or prestige, even after continued operation becomes socially harmful.

The paper uses mathematical models to separate these competing mechanisms. It does not estimate their size using foundation records or test which lifespan arrangement works best in practice.

Why flexibility comes first

The starting point favors leaving options open. Suppose one decision maker, acting entirely for the foundation’s social purpose, chooses both its early investment and whether it later continues. Future conditions may be favorable or unfavorable, and investment in organizational capacity can improve the value of operating.

Under those assumptions, discretion performs at least as well as a mandatory continuation rule. The decision maker can keep the foundation open whenever doing so is worthwhile, while retaining the option to close.

Importantly, investment does not overturn this result. A sufficiently large investment might make continuation worthwhile even under unfavorable conditions. A valid comparison must allow the discretionary decision maker to choose that investment, rather than assume in advance that the foundation will close in the bad state.

Permanent existence therefore needs an additional justification: the promise must change someone else’s behavior or address a governance problem.

When a promise to continue helps

Jaag introduces an earlier manager or specialist who invests effort in the foundation’s organizational capacity. That effort is costly and cannot be secured through an enforceable contract. The manager receives only part of the resulting social benefit, and receives that return only if the foundation continues.

In the baseline model, a later board pursues the social objective but cannot observe the manager’s effort. It decides whether to continue using the conditions it observes and its expectations about investment.

A credible perpetual mandate increases the manager’s expected return to effort because the organization will operate in both favorable and unfavorable conditions. The manager consequently invests more than under discretion, where closure remains possible.

For a specified range of model parameters, that extra investment produces enough social benefit to outweigh the loss from operating in the unfavorable state. The tradeoff is real: even with the higher investment, the socially aligned board would prefer to close in that state if it could.

An extension allows the board to observe effort. Perpetuity can still perform better under sufficient conditions, but the calculation must include whether the manager would invest enough to persuade a discretionary board to continue. The result is conditional, not a general argument against flexibility.

When a closing date helps

The opposite problem arises when future governors receive private benefits from keeping the institution alive. Their preferred survival decision can then diverge from the foundation’s social purpose.

A second model examines a sequence of operating periods. Early organizational investment remains useful over time, but its contribution fades. If later operation eventually has a persistently negative direct social value, a finite closing date can outperform indefinite operation sustained by sufficiently strong governance bias.

Choosing the date requires more than identifying when operating benefits decline. A longer guaranteed horizon also encourages greater investment at the outset. The optimal deadline balances both effects. The paper gives additional conditions under which that optimum is unique.

A framework, not a universal deadline

The analysis constructs environments favoring each of the three lifespan arrangements. It does not supply a single threshold that classifies all foundations, nor evidence that actual boards or managers respond by the modeled amounts.

It also separates institutional lifespan from payout rates, preservation of endowment capital and the duration of grant contracts. An enduring institution need not preserve its original capital indefinitely; a finite-lived one need not distribute everything immediately.

Legal enforceability and financial feasibility remain essential limitations. A charter cannot guarantee survival without resources, and actual dissolution rights depend on foundation law. This arXiv preprint offers a conditional theoretical framework, not an empirically validated prescription: restrict future authority only when an identifiable incentive problem makes that restriction worthwhile.