Foundation, DAF, or Neither

A private foundation is your own 501(c)(3), funded by you, controlled by a board you appoint, investing its own assets and making its own grants. It is the vehicle people picture when they think about philanthropy at scale, and it buys three things a DAF cannot: genuine legal control rather than advisory privileges, the ability to pay family members reasonable salaries for real work, and the ability to make grants a DAF cannot — scholarships to individuals under an approved procedure, grants to foreign organizations, program-related investments.

It costs you the following, permanently:

A 1.39% excise tax on net investment income

under IRC §4940, “Excise tax based on investment income”. A DAF pays nothing.

A mandatory 5% annual payout

under IRC §4942, “Taxes on failure to distribute income”, measured on the fair market value of non-charitable-use assets. Miss it and the tax is 30% of the undistributed amount. A DAF has no payout requirement at all.

Worse deduction limits

— 30% of AGI for cash and 20% for appreciated property, against 60% and 30% for a DAF (section “Limits on Contributions”).

A public Form 990-PF

listing your assets, your grants, and your trustees’ compensation. DAF grants can be anonymous.

Real administration

— annual filing, investment management, minutes, and legal counsel. Below roughly $2–5 million of committed assets the overhead is hard to justify against a DAF that costs 0.6% and no effort.

The rule of thumb: choose the foundation when you need control, want to employ family, or intend to make grants a DAF structurally cannot. Choose the DAF for everything else, which is most cases. The two also compose — a foundation can grant to a DAF, and many families run a small foundation for the discretionary work alongside a DAF for the bulk giving.