Advocacy organizations: how to read a nonprofit’s public records

Start with the organization’s mission and activities

To evaluate advocacy organizations, begin with the organization’s mission and the activities it reports as its largest program services. The IRS requires Form 990 filers to describe their mission as adopted by the governing body, or to enter “None” if no such mission has been adopted or ratified. The return must also describe the organization’s three largest program services by total expenses. If it has three or fewer program service activities, it must describe each one. Read those sections together: the mission describes the organization’s stated purpose, while the program-service descriptions show how it says it pursued that purpose during the reporting period. (IRS Form 990 instructions)

The IRS instructions call for specific measures where available, such as clients served, sessions or events held, days of care provided, or publications issued. They also ask organizations to describe an activity’s objective and longer-term goal when the output is intangible, such as research. Treat these descriptions as the organization’s reported account of its work for that tax year, not as an independent assessment of impact. (IRS Form 990 instructions)

Confirm which records are available

An exempt organization must make its exemption application and annual return available for public inspection and copying. The annual-return materials can include Form 990, Form 990-EZ, Form 990-PF, certain Form 990-T filings, and related schedules, attachments, and supporting documents filed with the IRS. The IRS states that returns must generally be available for a three-year period beginning with the later of the return’s due date, including extensions, or the date it was actually filed. (IRS public-disclosure guidance)

When comparing years, check the accounting period at the top of each return. The 2025 Form 990 instructions explain that a 2025 return can cover a calendar year or a fiscal year that began in 2025 and ended in 2026. That distinction matters when matching reported activities to a particular period. (IRS Form 990 instructions)

Read contributor information with care

Public records do not necessarily identify every donor. The IRS says tax-exempt organizations generally are not required to publicly disclose contributor names or addresses listed on an annual return, including Schedule B. The stated general exclusion does not apply to private foundations or political organizations described in section 527. Contributor names and addresses on an exemption application are subject to disclosure. (IRS contributor-disclosure guidance)

Accordingly, an annual return can help you examine reported programs and other filed materials without providing a complete public list of supporters. Keep that limitation in mind before drawing conclusions about an organization’s funding or relationships.

Separate advocacy from lobbying registration

Advocacy can include asking public officials to take a position or act on a policy. Modern Action describes lobbying as including requests that Congress pass, change, or reject legislation, while noting that writing to a representative about an issue does not by itself make someone a registered professional lobbyist. Federal disclosure law uses a narrower definition tied to paid work and the extent of that work. (Modern Action: what lobbying means)

Use the organization’s stated mission and reported program services to understand what it says it does. Do not treat every policy-related activity as proof that the organization is a registered lobbyist, and do not treat a public filing as a complete account of every supporter.

Compare the records

Choose one organization and record its mission, reporting period, three largest listed program services, and any measurable outputs described in Part III or Schedule O. Then compare those entries with the organization’s public explanation of the issue you care about.

If the records point you toward a legislative question, Modern Action can show the relevant bill or subject action page when one is available, ask where you stand and why, and draft a constituent message for you to review and edit before sending. (Write to Congress with Modern Action)