How to Change a Private Foundation to a Public Charity

To change a private foundation to a public charity, you follow one of two paths under Section 507(b)(1) of the Internal Revenue Code: transfer all of the foundation’s net assets to an existing qualifying public charity, or keep the assets and operate as a publicly supported organization for a continuous 60-month period while meeting the public support test. Either route requires proper IRS filings, and skipping the statutory procedure exposes the foundation to a termination tax that can equal every tax benefit it and its donors have ever received.¹

Choose Your Conversion Path

Section 507(b)(1) offers two ways out of private foundation status without triggering the termination tax.

The first is a complete asset transfer under Section 507(b)(1)(A). The foundation distributes all of its net assets to one or more organizations that already qualify as public charities under Section 509(a)(1) and have held that status for at least 60 consecutive months before receiving the transfer.¹ Once the transfer finishes, the foundation is considered terminated. No advance notice to the IRS is required, and the termination tax does not apply. This works when the founders are willing to give up control of the assets entirely.

The second path is an operating conversion under Section 507(b)(1)(B). The foundation keeps its assets but changes how it operates, shifting from private grant-making to functioning as a publicly supported organization. It must meet the requirements of Section 509(a)(1), (2), or (3) for a continuous 60-month period.² Most organizations that want to continue their charitable work under a more favorable tax structure choose this route.

The Public Charity Category You’ll Need to Qualify Under

Before starting, decide which category of public charity your organization will fit. The IRS recognizes several types under Section 509(a).³

Section 509(a)(1) covers organizations that receive substantial support from government sources or the general public, including churches, schools, hospitals, and organizations broadly supported by public contributions. Section 509(a)(2) covers organizations that draw more than one-third of their support from contributions, membership fees, and mission-related revenue combined, while receiving less than one-third from investment income.⁴ Section 509(a)(3) covers supporting organizations that operate exclusively to benefit one or more existing public charities.

The 33 1/3% Public Support Test

For most converting foundations, the critical hurdle is the public support test. Organizations qualifying under 509(a)(1) with Section 170(b)(1)(A)(vi) status must show that at least one-third of their total support over a five-year measurement period comes from public sources: individual donors, corporations, other public charities, and government grants.⁵ A foundation that has relied on a single donor or family will need to diversify its funding sources substantially to clear this bar.

An organization that receives at least 10% but less than one-third of its support from public sources can still qualify under a facts-and-circumstances test, if it can show a broad-based governing board, services to the general public, and active solicitation of a wide range of donors.⁶ The IRS has real discretion here, so most converting foundations aim to clear the one-third threshold outright.

Filing Form 8940 and Notifying the IRS

If you’re taking the operating conversion route, the 60-month clock is the centerpiece of the process, and it starts with notification. You file Form 8940, Request for Miscellaneous Determination, electronically through Pay.gov.⁷ The same form handles reclassification of foundation status and requests for an advance ruling on a 60-month termination period.⁸ At its discretion, the IRS may issue an advance ruling that the organization can reasonably be expected to meet public charity requirements during the transition.⁹

Notification must be made before the 60-month period begins.¹⁰ Along with the form, submit financial data showing that the organization meets, or can reasonably be expected to meet, the applicable public support test. Support is measured over the current year plus the four years immediately preceding it.¹¹

A user fee applies when filing Form 8940. The IRS updates fee amounts annually in its Revenue Procedure. If the organization’s purpose or activities have fundamentally changed, the IRS may also require a new Form 1023 application, which carries a separate $600 user fee.¹²

What Happens During the 60-Month Window

During the 60 months, the foundation works to satisfy the public support test by broadening its donor base, increasing public fundraising, and shifting operations toward direct charitable activities instead of pure grant-making. Meet the Section 509(a)(1), (2), or (3) requirements for the entire period, and the organization is treated as a public charity retroactively for the full stretch.²

Fail to meet the requirements for the full 60 months, and the conversion itself fails; the organization remains a private foundation going forward. The result isn’t catastrophic, though. The private foundation rules and Chapter 42 excise taxes do not apply during any individual tax year within the 60-month period where the organization did meet the public charity requirements.

Avoiding the Section 507 Termination Tax

This is the reason the statutory procedure matters. When a private foundation terminates outside the safe harbors of Section 507(b)(1), it faces a termination tax equal to the lesser of the foundation’s net assets or its aggregate tax benefit, which is essentially the total value of every tax break the foundation and its donors have ever received.¹ That aggregate includes the income tax savings from every charitable deduction taken by substantial contributors, the income tax the foundation would have paid if it hadn’t been tax-exempt, and interest on those amounts running back to the date each benefit was first received.¹³

For a foundation that has existed for decades, the aggregate tax benefit can exceed the current value of the foundation’s assets. The only reliable protection is following Section 507(b)(1) precisely: transfer all assets to a qualifying public charity, or complete the 60-month conversion with proper IRS notification filed before the period begins. Skipping notification or falling short of the public support test for the full 60 months leaves the foundation exposed.

Staying a Public Charity After You Convert

Conversion isn’t one-and-done. After the transition, your organization must continue to satisfy the public support test, and the IRS monitors this through the annual information return.

Public charities report their support data on Schedule A, attached to Form 990.⁵ The calculation uses a rolling five-year window: the current tax year plus the four years immediately before it. An organization that passes for a given year is treated as a public charity for that year and the following year. If it fails for two consecutive measurement years, the IRS reclassifies it as a private foundation at the start of the second year, bringing back all the excise taxes and restrictions the organization worked to escape.¹¹

Filing also changes. Public charities file Form 990, Form 990-EZ, or Form 990-N depending on size, instead of the Form 990-PF that private foundations file.¹⁴ Public charities must also stay within the limits on lobbying activity and avoid political campaign intervention to maintain 501(c)(3) status. A foundation used to its old operating structure may not have governance policies that address either.

What Changes Financially After Conversion

The payoff is why organizations go through this process.

Private foundations pay a 1.39% excise tax on their net investment income every year, along with the Chapter 42 penalty tax framework covering failure to distribute income and excess business holdings.¹⁵¹⁶¹⁷ Public charities are not subject to those excise taxes. The mandatory 5% annual distribution requirement also disappears. Public charities have no minimum payout obligation, which gives them more flexibility in managing and deploying resources over time.

Donors benefit too. Cash contributions to public charities can be deducted up to 50% of a donor’s adjusted gross income, while cash gifts to private foundations are capped at 30%.¹⁸ Appreciated property donations follow a similar pattern, with higher deduction limits for gifts to public charities. For an organization courting major gifts, that difference is a real fundraising advantage.

Plan your fundraising strategy before you file. The organizations that fail after converting are almost always the ones that didn’t build a sustainable public support pipeline during the transition. If your donor base still looks like a private foundation’s after the 60-month period ends, the math will catch up with you on Schedule A.

1
Internal Revenue Service. IRC 507(c), Imposition of Tax Upon the Termination of a Private Foundation
2
Office of the Law Revision Counsel. 26 U.S. Code 507 – Termination of Private Foundation Status
3
Internal Revenue Service. Determine Your Foundation Classification
4
Office of the Law Revision Counsel. 26 U.S. Code 509 – Private Foundation Defined
5
Internal Revenue Service. Exempt Organizations Annual Reporting Requirements – Form 990, Schedules A and B: Public Charity Support Test
6
Internal Revenue Service. Exempt Organizations Annual Reporting Requirements – Form 990, Schedules A and B: Facts and Circumstances Public Support Test
7
Internal Revenue Service. Form 8940 for Miscellaneous Determination Requests
8
Internal Revenue Service. About Form 8940, Request for Miscellaneous Determination
9
Internal Revenue Service. Operation as a Public Charity
10
Internal Revenue Service. Termination of Private Foundation Status
11
Internal Revenue Service. Advance Ruling Process Elimination – Public Support Test
12
Internal Revenue Service. Form 1023 and 1023-EZ: Amount of User Fee
13
eCFR. 26 CFR 1.507-5 – Aggregate Tax Benefit; In General
14
Internal Revenue Service. Exempt Organization Annual Filing Requirements Overview
15
Internal Revenue Service. Tax on Net Investment Income
16
Office of the Law Revision Counsel. 26 U.S. Code 4942 – Taxes on Failure to Distribute Income
17
Office of the Law Revision Counsel. 26 U.S. Code 4943 – Taxes on Excess Business Holdings
18
Internal Revenue Service. Charitable Contribution Deductions