A financial endowment is a legal structure for managing, and in many cases indefinitely perpetuating, a pool of financial, real estate, or other investments for a specific purpose according to the will of its founders and donors. Endowments are often structured so that the inflation-adjusted principal or "corpus" value is kept intact, while a portion of the fund can be spent each year, utilizing a prudent spending policy.

A foundation is a type of nonprofit organization or charitable trust that usually provides funding and support to other charitable organizations through grants, while also potentially participating directly in charitable activities. Foundations encompass public charitable foundations, like community foundations, and private foundations, which are often endowed by an individual or family. Nevertheless, the term "foundation" might also be adopted by organizations not primarily engaged in public grantmaking.