Donor-Advised Fund or Foundation: Control, Cost, and 2026 Tax

A donor-advised fund lets you recommend grants; a private foundation lets you make them. That distinction, advice against control, shapes nearly everything else: how much of a gift you can deduct, what you must disclose, what the structure costs to keep, and who carries the work forward when you step back.

If you are weighing a commitment large enough to deserve its own structure, perhaps the proceeds of a business sale, this guide sets out the federal rules for each vehicle as they stand in 2026, including this year’s changes to itemized charitable deductions. It should let you see which structure fits the giving you intend, and bring sharper questions to your attorney, tax adviser, and any sponsor you interview. If you have not yet settled a budget and method, begin with a charitable giving plan built with structure.

Advisory privileges are not ownership

The IRS describes a donor-advised fund as a separately identified account maintained and operated by a section 501(c)(3) sponsoring organization. Once you contribute, the sponsor has legal control. You, or a representative you name, keep advisory privileges over grants and investments. Your recommendations are exactly that.

Publication 526 says you cannot deduct a contribution to a donor-advised fund without a contemporaneous written acknowledgment that the sponsor has exclusive legal control over what you gave. The IRS also warns that some arrangements promoted as donor-advised funds appear designed to generate questionable deductions and impermissible benefits for donors and their families, and that it may disallow those deductions and impose excise taxes on sponsors, fund managers, or donors.

A private foundation is your own tax-exempt entity, governed by the people you place on its board. It can hire staff, write its own grant guidelines, run programs, and carry a family name for decades. Control is the point, and control comes with federal rules that bind the foundation, its managers, and in some cases you.

Control is the foundation’s great advantage, and it arrives with a public return, an annual payout, and a rulebook that reaches your family.

What you can deduct, and against how much income

Publication 526 sorts recipients into two groups. The first, called 50% limit organizations, includes publicly supported charities; a sponsoring organization cannot by law be a private foundation. The second includes private nonoperating foundations, which the IRS notes are often called grant-making foundations. Measured against adjusted gross income (AGI), the general limits are:

• Cash to a public charity, including a fund at a publicly supported sponsor: up to 60% of AGI.
• Appreciated long-term property to a public charity: fair market value, up to 30% of AGI, or 50% if you elect to deduct only your basis.
• Cash to a private nonoperating foundation: up to 30% of AGI.
• Appreciated long-term property to a private nonoperating foundation: up to 20% of AGI, and generally only your basis.

Amounts above a limit can generally be carried forward for five years. The main exception to the basis rule for foundations is qualified appreciated stock: publicly traded shares with readily available market quotations, deductible at fair market value even when given to your own foundation, except to the extent you and your family have contributed more than 10% of the value of the company’s outstanding stock. So closely held shares or land given to your foundation generally produce a deduction measured by what you paid; given to a donor-advised fund, the same asset can generally be deducted at appraised value.

Art needs separate care: Publication 526 generally limits the deduction for tangible personal property to basis when the recipient puts it to an unrelated use, or sells an item claimed at more than $5,000 in the year of the gift without certifying an exempt use.

The 2026 changes: a floor and a trim

The One Big Beautiful Bill Act, Public Law 119-21, made two changes that matter here, and both apply whichever vehicle you choose.

The first is a floor. Beginning in 2026, itemizers can deduct charitable contributions only to the extent they exceed 0.5% of AGI. Suppose your AGI is $3 million: the first $15,000 of the year’s gifts produces no deduction.

The second is a trim. For 2026, if your taxable income, figured before subtracting itemized deductions, exceeds $640,600 as a single filer, or $768,700 filing jointly or as a qualifying surviving spouse, your itemized deductions are reduced by 2/37, about 5.4%, of the lesser of your total itemized deductions or the excess over that threshold. The single threshold is also where the 37% bracket begins in 2026, so for someone well inside the top bracket, a dollar of deduction is worth somewhat less than 37 cents.

Neither rule favors one vehicle; both bear on timing. Because the floor applies year by year, concentrating several years of giving into one year, for example through a donor-advised fund, can reduce how much falls beneath it. In a year when you take the standard deduction instead, the new deduction for cash gifts by non-itemizers, up to $1,000, or $2,000 for married couples filing jointly, does not extend to gifts to a donor-advised fund. Our guide to the 2026 charitable deduction rules works through the arithmetic.

What a private foundation must do every year

Every private foundation files Form 990-PF annually, and an exempt foundation that fails to file for three consecutive years automatically loses its exemption.

A nonoperating foundation must pay out its distributable amount as qualifying distributions, such as grants, by the end of the following tax year. That amount starts from the minimum investment return: 5% of the fair market value of assets not used for charitable purposes, less acquisition debt, with adjustments. An undistributed shortfall faces a 30% excise tax for each year or partial year it remains uncorrected; if the deficiency is not corrected within the statutory correction period after IRS notice, an additional tax equal to 100% of the remaining shortfall applies. Paying the tax does not replace the distribution. Suppose your foundation holds $20 million of noncharitable-use investments with no acquisition debt: its minimum investment return starts near $1 million, regardless of what the portfolio earned, before the taxes and other adjustments used to calculate the distributable amount.

A tax-exempt foundation also generally pays an excise tax of 1.39% on its net investment income. The 2025 legislation did not change that rate: the IRS page on the tax, updated in September 2026, still gives 1.39% for tax years beginning after December 20, 2019, and the Code section carries no 2025 amendment.

A donor-advised fund account has no comparable federal rule requiring that particular account to distribute 5% each year. The sponsor may still impose minimum-grant, inactivity, or succession policies, and the sponsor (not the donor)decides whether a recommended grant is permissible. A distribution to an individual is generally a taxable distribution, and advice that produces more than an incidental benefit for the donor, an advisor, or related persons can trigger excise taxes. Ask the sponsor for those policies before contributing, because the gift cannot be reclaimed if its rules later feel too restrictive.

Self-dealing reaches your family

Disqualified persons include substantial contributors (almost certainly you), foundation managers, their family members, and entities more than 35% owned by them. The IRS lists what is generally self-dealing between a foundation and a disqualified person: selling, exchanging, or leasing property; lending money; providing goods, services, or facilities; paying compensation or reimbursing expenses; and transferring foundation income or assets to, or for the benefit of, a disqualified person. Indirect self-dealing is covered too. Exceptions exist, and they are technical.

So the foundation should not rent space in your building, lend to the family company, or pay for anything that benefits your household unless counsel has confirmed an exception. The excise taxes fall on the self-dealer personally, and on managers who knowingly take part.

Privacy, cost, and the people who do the work

A foundation’s Form 990-PF, with its schedules and attachments, must be made public by both the IRS and the foundation. It lists officers, directors, and trustees and their compensation, reports grants paid, and includes a schedule of anyone who gave $5,000 or more in the year.

A foundation needs formation documents under state law, which varies, plus recognition of exemption, annual returns, investment management, and advisers fluent in the private-foundation rules; staff come later, if at all. A donor-advised fund is an account the sponsor maintains and operates, so your costs are its administrative fees and the fees on its investment options. Ask for the complete schedule, grant minimums, and investment menu in writing.

Governance and succession

A foundation outlives its founder only if someone runs it. Decide early who will sit on the board, how successors are chosen, and whether the foundation should exist in perpetuity or spend down by a set date. Relatives who serve become disqualified persons in their own right, so paying them requires care.

With a donor-advised fund, succession is whatever the sponsor’s policy permits. Ask whether you can name successor advisors, how far the privilege can pass, and what happens when no advisor remains. Coordinate the answers with your will and trusts; our guide to charitable bequests that still work covers the drafting.

Starting with a donor-advised fund

If you are undecided, a donor-advised fund is the lower-commitment first step. It accepts cash and appreciated assets on public-charity terms, allows the deduction in the year you contribute, perhaps the year of a large sale, and gives you time to learn what kind of philanthropist you intend to be.

One caution: what you give is owned and controlled by the sponsor, so treat it as committed to charity, not as a reserve for a foundation you might form later. A foundation remains available afterward, funded with new assets, if your giving grows into programs, staff, or a family institution that needs genuine control.

Questions to settle before you choose

1. Which decisions do you want to own outright: grantees, investments, staff, programs, the name on the door?
2. Will you give cash, public stock, private shares, real estate, or art, and what can each earn you as a deduction?
3. How will your projected income for 2026 and later years interact with the 0.5% floor and the top-bracket reduction?
4. Are you comfortable with a public Form 990-PF naming officers, compensation, grants, and major contributors?
5. Who will calculate the minimum investment return and confirm each year’s distributable amount is paid on time?
6. Which relatives will serve, and how will you keep property, business dealings, and pay clear of self-dealing?
7. What are the sponsor’s fees, investment options, grant minimums, and successor-advisor rules?
8. If you step back or die, who files the return, chairs the board, or advises the fund?

This article provides general U.S. educational information and is not legal, tax, accounting, or investment advice. Confirm current rules with the IRS and with an attorney and tax adviser who know your facts and your state’s law.