Donor-Advised Fund (DAF) Definition: What It Means for High-Earning Families

By Kevin Luu, Co-Founder and Chief Learning Officer. Reviewed on 2026-09-30.

A donor-advised fund (DAF) is a charitable giving account held at a public charity, called the sponsoring organization. You give cash or stock to the account, take the tax deduction in the year you give, and then recommend grants to the charities you choose, now or in later years. Federal law defines a DAF as a fund that is separately identified with your contributions, owned and controlled by the sponsor, and over which you keep advisory privileges for grants and investments (IRS: Donor-advised funds; 26 U.S.C. §4966(d)(2)).

In finance shorthand, “DAF” almost always means this account. For a high-earning W-2 family in California or Washington, it is the simplest way to give appreciated RSU shares instead of cash and to separate the tax decision from the giving decision.

What a DAF account actually is, in plain terms

Think of it as three steps that can happen years apart.

1. You contribute. The gift is irrevocable. Once the money or shares are in the DAF, they legally belong to the sponsor, not to you. That is why you get the deduction now.
2. The account is invested. You usually pick from the sponsor’s investment menu. Because the sponsor is a charity, growth inside the account is not taxed to you.
3. You recommend grants. You suggest a grant to a qualified charity, such as your children’s school, a hospital or a food bank. The sponsor checks the charity and almost always follows your advice, but it has the final say.

The term “donor-advised fund” was written into the tax code by the Pension Protection Act of 2006, which also added the rules on what a DAF can and cannot pay for (26 U.S.C. §4966 and §4967, added by Pub. L. 109-280).

DAF meaning versus a private foundation and direct giving

Families in the $750k to $3M income range usually choose between three options. The table shows the main differences for 2026.

Sources: deduction limits from IRS Publication 526; the 60% cash limit was made permanent by the 2025 tax law (P.L. 119-21); foundation payout rule (a 5% minimum investment return on non-charitable-use assets) from 26 U.S.C. §4942(e). A private foundation gives more control, including hiring family members for real work. For most W-2 families giving under a few hundred thousand dollars a year, a DAF does the same job with no extra entity to run.

What a DAF can and cannot pay for

• Can: grants to US public charities, including schools, hospitals, religious organizations and other DAFs.
• Cannot: grants to individuals (§4966(c)), such as a relative’s medical bill or a scholarship you pick yourself.
• Cannot: anything that gives you or your family more than an incidental benefit. That generally rules out private school tuition, the dinner portion of a gala ticket, auction items and membership perks (26 U.S.C. §4967).
• Cannot: getting the money back. If plans change, the money still has to go to charity.

The tuition point trips up many parents. A gift to your child’s school annual fund can come from a DAF. Tuition, or a donation that is really a condition of enrollment, cannot.

How the DAF deduction works for a family above $750k

A DAF gift is deductible only if you itemize. The new 2026 deduction for people who take the standard deduction ($2,000 of cash gifts on a joint return) excludes gifts to a DAF (P.L. 119-21). Two 2026 rules also reduce the benefit at this income. Giving counts only above 0.5% of AGI, and the 2/37 limit on itemized deductions means each dollar deducted saves about 35 cents of federal tax instead of 37 for a household inside the 37% bracket, which starts at $768,700 of taxable income for married couples filing jointly in 2026 (P.L. 119-21; Rev. Proc. 2025-32). Our guide to DAF deductibility walks through the limits, carryovers and timing in detail.

The main reason a DAF fits this reader is not the deduction itself. It is the ability to give long-held RSU or ESPP shares at full market value. You deduct the full value and nobody pays tax on the gain.

Worked example: a big vest year in San Jose

Assumptions (illustrative, 2026 federal rules, 2025 California rate schedule, the latest published): a married couple, both W-2 employees at a Bay Area tech company, children aged 3 and 7. AGI is $950,000 each year before any stock sale. They already itemize because of mortgage interest. They give about $25,000 a year to their children’s school, a food bank and a children’s hospital. They hold RSU shares that vested more than a year ago, now worth $125,000 with a cost basis of $45,000.

How the numbers work. Gain: $125,000 minus $45,000 = $80,000. Federal: the couple is above the $613,700 threshold for the 20% long-term rate and the $250,000 threshold for the 3.8% Net Investment Income Tax in 2026, so $80,000 x 23.8% = $19,040 (Rev. Proc. 2025-32; IRS). California taxes capital gains as ordinary income (FTB). Assuming $40,000 of California itemized deductions, the couple’s California taxable income before the sale is $910,000, above $891,542, the start of the 11.3% bracket on the 2025 joint schedule (FTB). The gain brings it to $990,000, still under the $1,000,000 line where California’s extra 1% Behavioral Health Services Tax starts, so $80,000 x 11.3% = $9,040. Floor: 0.5% x $950,000 = $4,750. In the sale year the $80,000 gain raises AGI to $1,030,000, so that year’s floor is $5,150. Five cash gifts of $25,000 leave $19,850 + (4 x $20,250) = $100,850 deductible; one $125,000 gift leaves $120,250, well under the 30% limit of $285,000. The extra $19,400 of deduction is worth roughly $6,790 federally at about 35 cents per dollar.

The result: about $34,900 less tax ($19,040 + $9,040 + $6,790) for the same $125,000 reaching charity, and the charities still get $25,000 a year as the couple recommends grants from the DAF. If the couple wants to keep exposure to the company, they can use the cash they would have given to buy back shares at a new, higher basis. That also helps if one employer’s stock is a large share of their net worth (see investment risk management).

The same family in Seattle

Washington has no tax on wages in 2026, so a DAF there saves federal tax but no state income tax on pay. Washington does tax long-term capital gains on stock at 7% above a standard deduction of $278,000 (2025, the latest published), rising to 9.9% on taxable gains above $1,000,000 (WA DOR). Giving shares can avoid that tax for families whose gains are above the deduction. A 9.9% Washington income tax on AGI over $1,000,000 takes effect in 2028 (WA DOR). Whether charitable gifts will reduce that tax depends on Department of Revenue guidance that is not final yet, so families near that line may want to revisit the timing of large gifts once the rules are published.

Common mistakes with a donor-advised fund

• Giving cash while holding appreciated shares. Selling first means paying tax on the gain, then deducting only the after-tax cash.
• Giving shares held one year or less. The deduction is limited to cost basis, which removes most of the benefit (Publication 526).
• Opening a DAF in a year you will not itemize. Without itemizing, the contribution gets no federal deduction.
• Using DAF grants for tuition or gala dinners. These are benefits to you, which DAF rules prohibit.
• Letting the account sit. No federal payout rule applies, but money parked for years helps no one. Set a grant rhythm each year.
• No successor named. Most sponsors let you name successor advisors. Without one, the sponsor’s default policy decides what happens to the account.

Using a DAF to teach your children how you give

A DAF is one of the few financial accounts a young child can understand: money set aside only for helping others. Many families let each child recommend one small grant a year, starting around age five, and write down why the family chose each charity. As Kevin Luu puts it: “Your kids don’t need to inherit your portfolio. They need to inherit your decision-making process.”

Write down three things: which causes the family supports and why, how much you give each year and how you decided, and who becomes successor advisor if something happens to both parents. Keep that note with your estate documents and your FamilyKnowledge® Library. Our family governance and Age Five Wealth Education work at Age Five Family Office™ builds that habit into the year, and estate planning helps keep the successor named at the DAF sponsor consistent with the will.

Questions families ask about DAFs

Is a DAF the same as a charitable fund at a brokerage?

Usually, yes. Most large brokerages run a separate public charity that sponsors DAFs, and community foundations and some universities sponsor them too. The account works the same way under federal law. Sponsors differ in minimum opening amounts, fees, investment menus and whether they accept private company stock, so compare those before choosing one.

Can I add more to the DAF later?

Yes. You can contribute again in any year, and each gift is deductible in the year you make it, subject to that year’s AGI limits. Many families add shares in years with a large RSU vest or bonus, when their income is highest, and then recommend grants at a steady pace in the years between.

Can my children take over the DAF?

At most sponsors, yes. You name your children as successor advisors, and they take over grant recommendations after you, often once they reach adulthood. Some sponsors limit how many generations can advise, so check the policy. This is general education, and the right move depends on the family’s full picture.

Next step

Before opening a DAF, list your RSU and ESPP lots held more than a year with their cost basis, and pick the lots with the largest gain. That one list tells you how much a DAF gift could save. If you want help sequencing it with your vest schedule and estate plan, our tax management team covers it in the Tax & Wealth Assessment.

Written by

Kevin Luu

Co-Founder and Chief Learning Officer, Bright Advisers

Kevin has advised high-income W-2 tech and biotech families since 2015, and leads the education-first Age Five Family Office from Brea, California.

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