Donor Confidentiality Laws: IRS Rules, States, and Exceptions

Donor confidentiality laws in the United States turn almost entirely on what kind of organization receives the money. Give to a 501(c)(3) public charity, and your name and address stay shielded from the public by federal statute. Give to a private foundation, a political action committee, or a federal campaign, and your identity becomes part of the public record. Everything else is a variation on that basic split.

Public Charities: Reported to the IRS, Hidden From the Public

A 501(c)(3) public charity files an annual Form 990, and that return is a public document. Anyone can see the organization’s revenue, expenses, and executive pay. The donor list is different. Charities must report names and addresses of anyone who gives $5,000 or more in a tax year on Schedule B, which is attached to the 990.¹ Schedule B is not public.

The confidentiality rule sits in 26 U.S.C. § 6104. The statute prohibits the IRS from disclosing the name or address of any contributor to an organization other than a private foundation or a Section 527 political organization, and it bars charities themselves from being required to include contributor identities in the copy of the return they make available for public inspection.² The public sees the total raised. The public does not see who gave.

The wall runs between the charity and the general public, not between the charity and federal regulators. Charities must keep full donor records internally and produce them if the IRS audits or investigates.

Private Foundations Are the Exception

Private foundations play by different rules. Their contributor information is public as part of the Form 990-PF, and the IRS has confirmed that identities of contributors to a private foundation are not exempt from disclosure.³ Section 6104 explicitly carves them out of the confidentiality protection that covers public charities.²

The reasoning is that a small number of donors typically control a private foundation, and the public interest in knowing who funds and directs it outweighs the privacy interest a public charity’s donors would have.

Political Committees and Campaigns: Public by Design

When money moves into politics, confidentiality goes away. Section 527 political organizations, including PACs and campaign committees, must publicly report contributors. They file on Form 8872 with the IRS and, for federal elections, with the Federal Election Commission.⁴ Section 6104 excludes these organizations from the contributor confidentiality protection.²

The FEC threshold is low. Once your contributions to a federal committee aggregate more than $200 in an election cycle, your name, mailing address, occupation, and employer become part of a searchable public database. The stated rationale is that voters have a right to know who is funding the candidates and causes on the ballot.

One boundary worth naming: foreign nationals cannot make political contributions at any level, and this is a flat prohibition, not a disclosure question. It covers foreign citizens who are not lawful permanent residents, foreign governments, foreign parties, and corporations organized under foreign law. Even helping facilitate a foreign national’s contribution violates the law. Green card holders are the sole exception.⁵

Social Welfare Organizations and the “Dark Money” Middle Ground

Section 501(c)(4) social welfare organizations sit between charities and political committees, and their disclosure rules reflect that. Since 2018, they no longer report contributor names and addresses to the IRS on Schedule B.⁶ They still report contribution amounts over $5,000 and must keep internal records of who gave, available to the IRS on request.¹

Because 501(c)(4) groups can engage in some political activity without publicly identifying donors, they have become a common vehicle for issue ads and election-related advocacy. Critics call this dark money spending. The IRS has not set a hard percentage on how much political activity a social welfare organization can undertake before losing its exempt status; the general practitioner understanding is that political campaign activity cannot be the group’s primary purpose. Groups operating near the line face real uncertainty about where it sits.

State Registration and What States Can Demand

Roughly 40 states require a charity to register with a state agency before soliciting donations from that state’s residents.⁷ Registration usually means filing a copy of the Form 990 and paying a fee, and requirements vary by state.⁸

The harder question has been whether a state can also demand the confidential Schedule B. Some states used to require charities to submit the unredacted donor list as part of registration, arguing the information helped them investigate fraud. In 2021, the Supreme Court in Americans for Prosperity Foundation v. Bonta struck down California’s blanket version of that requirement. The Court held that mass collection of donor identities burdened First Amendment associational rights and was not narrowly tailored to the state’s interest in policing charity fraud. States can still subpoena donor information for a specific investigation. They cannot demand the list upfront from every registered charity.

The ruling reaches beyond California. Any state with a similar blanket policy faces the same constitutional problem, and multi-state charities have stronger footing to push back on routine demands for contributor lists.

The Constitutional Backstop

The constitutional foundation for donor privacy is NAACP v. Alabama from 1958. Alabama had demanded the NAACP’s membership list. The Supreme Court unanimously held that forced disclosure of an organization’s supporters can suppress the freedom of association protected by the First and Fourteenth Amendments, because people are less willing to join or give when they fear retaliation.⁹

Courts now evaluate compelled disclosure under “exacting scrutiny,” which requires that the disclosure serve a sufficiently important government interest and be narrowly tailored to that interest.¹⁰ Fraud enforcement and electoral transparency have both been recognized as important enough interests to justify targeted disclosure. Broad, untargeted collection typically fails, because the government usually has narrower ways to get what it actually needs.

What Charities Owe You Back

Confidentiality rules govern what the public can learn about you. A separate set of rules governs what the charity must send back to you, and these exist mainly to support your tax return. For any single contribution of $250 or more, you need a written acknowledgment from the charity to claim a federal deduction. The acknowledgment must state the cash amount, describe any property, and indicate whether the charity provided anything in return, along with a good-faith estimate of that value if it did.¹¹

For donors focused on privacy, the strongest confidentiality protection under current law remains giving to a 501(c)(3) public charity. Give to a private foundation, PAC, or campaign, and expect your name in the record.

1
Internal Revenue Service. Instructions for Schedule B (Form 990)
2
Office of the Law Revision Counsel. 26 US Code 6104 – Publicity of Information Required From Certain Exempt Organizations and Certain Trusts
3
Internal Revenue Service. Public Disclosure and Availability of Exempt Organizations Returns and Applications: Requirements for Private Foundations
4
Internal Revenue Service. Political Organization Filing and Disclosure
5
Federal Election Commission. Foreign Nationals
6
U.S. Department of the Treasury. Treasury Department and IRS Announce Significant Reform to Protect Personal Donor Information to Certain Tax-Exempt Organizations
7
Internal Revenue Service. Charitable Solicitation – Initial State Registration
8
Internal Revenue Service. Charitable Solicitation State Requirements
9
Justia. NAACP v. Alabama Ex Rel. Patterson
10
Legal Information Institute. Donor Disclosure Requirements
11
Internal Revenue Service. Charitable Contributions