ANALYSIS · Capital

Building a board of directors for a nonprofit after you sell: foundation or donor-advised fund?

A private foundation gives a newly liquid owner control, and the tax code responds with a payout clock, personal self-dealing taxes and tight limits on holding company stock.

Rendal Post Analysis Desk · Published November 11, 2026

An owner who has just turned a company into cash faces a philanthropic choice that looks like a tax question but, in our reading, is really about governance. A donor-advised fund lets you give through someone else's structure. A private foundation lets you build your own, including a board of directors for a nonprofit that you and your family can control. In our reading of the statute and IRS guidance, the case for the foundation rests on that control. The price is a set of excise taxes aimed at the insiders who will sit on the board: a distribution requirement whose penalty can reach the full amount left undistributed, self-dealing taxes that individuals pay themselves, and holding limits that are hardest on gifts of family business stock.

Control is the real choice

The IRS describes a donor-advised fund as a separately identified account that a section 501(c)(3) sponsoring organization maintains and operates, with each account built from contributions by individual donors. Once the gift is made, the sponsoring organization has legal control over it. The donor or a representative keeps advisory privileges over both grants and investments. Advice is not authority: you recommend, and the sponsor decides.

A private foundation works the other way. The IRS notes that a foundation deals with the agency throughout its existence, from applying for recognition of tax-exempt status to filing annual information returns and changing its mission. That is the cost of owning the decisions: paperwork, a permanent relationship with the regulator and, in our reading, rules written with the founder's own circle in mind.

A donor-advised fund still comes with rules. The IRS says it has seen organizations marketed as donor-advised funds that seemed designed to produce questionable charitable deductions and impermissible economic benefits to donors and their families. In those cases, the agency lists possible responses that include disallowing deductions under section 170, excise taxes under sections 4966 and 4958, and revoking the charity's exemption. Our takeaway is that the advisory privilege is real but narrow. Using it to send value back to the family invites the scrutiny the IRS describes.

The payout clock

A foundation cannot simply sit on the sale proceeds. Under the federal rule on failure to distribute income, an initial tax applies to a private foundation's undistributed income. If any of that income is still undistributed when the taxable period closes, a second tax of 100 percent of the remaining amount applies. The passages we reviewed for this piece do not state the annual payout rate, and we will not supply one from memory. Get the figure, and how it is calculated for your assets, in writing from counsel.

Counsel should also confirm whether the requirement is tied to asset values. If it is, the base moves with the market: for securities with readily available market quotes, the code says fair market value is set on a monthly basis, and a portfolio that rises after the sale would raise the amount the board has to give out.

There is some flexibility. The statute allows an amount set aside for a specific charitable project to count as a qualifying distribution if it meets further requirements. A foundation can also elect to treat certain distributions as coming from a designated prior year's undistributed income or from corpus. In our reading, these tools reward a board that plans grants over several years. They do little for a board that meets once a year to approve whatever grants the founder brings in.

The board and the self-dealing trap

Self-dealing is where the board question becomes personal. The code taxes every self-dealing transaction between a foundation and a disqualified person, its term for an insider, at 10 percent of the amount involved for each year or part of a year in the taxable period, and the disqualified person who participates pays it. If the act is not corrected within the taxable period, an additional tax of 200 percent of the amount involved is imposed on that person. Who counts as a disqualified person is defined in section 4946. The passages we reviewed refer to that section but do not reproduce it, so an owner should have counsel map exactly which relatives, trusts and companies it covers before the first board meeting.

Foundation managers face their own exposure, and counsel should confirm whether that term, which the passages we reviewed do not define, covers your directors. A foundation manager who knowingly takes part in self-dealing owes 5 percent of the amount involved unless the participation was not willful and had reasonable cause. A manager who refuses to agree to a correction faces a tax of 50 percent. The code caps each of those manager taxes at $20,000 for any one act. It also makes everyone liable under the same provision for a given act jointly and severally liable. In our reading, that means no one on the hook can assume someone else will pay the bill.

Correction is demanding. The statute defines it as undoing the transaction as far as possible and leaving the foundation no worse off than if the insider had acted under the highest fiduciary standards.

What does that mean for who sits on the board? The sources do not prescribe a board structure, so what follows is our own reading. A board made up only of the founder, a spouse and adult children puts every decision with people the statute may treat as insiders. Nobody on that board is positioned to question a deal that benefits the family before it closes. An independent director with fiduciary experience, plus outside counsel who reviews any transaction involving the family, gives the board someone whose job is to say no. A donor-advised fund avoids the question entirely. Because the sponsor holds legal control, there is no family board to staff, and for some owners that may be the main appeal.

When the gift is company stock

Owners who sold only part of the company, or who kept stock in a successor entity, may be tempted to fund the foundation with shares. The excess business holdings rule makes that costly. It imposes a tax of 10 percent of the value of any excess holdings in a business enterprise. If the excess is still there when the taxable period closes, a further tax of 200 percent of those holdings applies.

Excess holdings are measured as the stake the foundation would have to sell to someone other than a disqualified person to bring its position down to permitted levels. In our reading, selling the shares back to the family does not solve the problem. There is a small safe harbor. A foundation is not treated as having excess holdings in a corporation where it, together with certain related foundations, owns no more than 2 percent of the voting stock and no more than 2 percent by value of every class of outstanding stock combined.

The count goes beyond shares held in the foundation's own name. Stock held through a corporation, partnership, estate or trust is treated as owned proportionately by its shareholders, partners or beneficiaries. In our reading, that limits how far layered family structures can hide a stake, though the statute carves out certain income or remainder interests a foundation holds in some trusts. A donor-advised fund does not get around this either: for this section, the code says a donor-advised fund is treated as a private foundation.

The statute does include an exception for certain business enterprises that meet several requirements. One is that the company pays the foundation an amount equal to its net operating income within 120 days after the close of the taxable year. The other requirements are not in the passage we reviewed, so treat this as something to raise with counsel, not as a plan.

What to do with this

Start with the question of control, not tax. Maybe you want to give generously and have a say in where the money goes, without running an institution. In that case, a structure where the sponsor holds legal control and you keep advisory privileges may fit. If you want a family institution that outlasts you, the foundation is the vehicle, and you should budget for its obligations from the start.

Before funding a foundation, we would take four steps. First, have counsel write up a list of every person and entity likely to be a disqualified person under section 4946, and give it to every director. Second, set a distribution policy with a margin above the required amount, because income still undistributed at the end of the taxable period triggers a 100 percent tax. Third, adopt a rule that no transaction involving anyone on that list goes ahead without independent review. Correction has to leave the foundation as well off as if the insider had met the highest fiduciary standards, and, in our view, undoing a deal is harder than stopping one. Fourth, if company stock is part of the gift, model the 2 percent thresholds and the attribution rules before the transfer, not after.

Finally, choose the foundation's board with the same care you gave your operating company's board. In our reading, the most important person on a family foundation board is the one with the standing to tell the family no. The personal taxes the statute places on managers are a good reason to give that person both the seat and the authority to use it.