If your family foundation is planning to amplify social change or support policy reform, you'll quickly discover that federal law limits how much your foundation can spend on lobbying and political activity. Understanding these restrictions isn't just legal housekeeping—it directly shapes which causes you can fund and how you fund them.
What the IRS Actually Restricts
Private foundations operate under strict rules found in IRC Section 4945. The IRS prohibits foundations from making grants for direct lobbying (pushing specific legislation) or engaging in political campaigns (supporting or opposing candidates). Violating these rules triggers excise taxes on the foundation and, in some cases, on the foundation managers who approved the grants.
Direct lobbying is the clearest violation: funding an organization specifically to lobby Congress or state legislatures. Political campaign activity is equally prohibited—no funding for candidate campaigns, voter mobilization tied to candidates, or ballot initiatives that explicitly name candidates.
The Grassroots Lobbying Gray Zone
Grassroots lobbying sits in murkier territory and presents the biggest compliance headache for foundation boards. This involves funding organizations that encourage the public to contact legislators about specific legislation. Many family foundations don't realize their education grant or community advocacy award might cross this line.
The line moves depending on whether you fund general issue education (permitted) versus orchestrated campaigns urging constituents to call their representatives about a specific bill (restricted). If your foundation funds environmental education, that's clean. If you fund an organization specifically to mobilize supporters for a pending climate bill, expect IRS scrutiny.
Permitted Activities Your Foundation Can Fund
Not everything is off-limits. Foundations have meaningful latitude:
- Nonpartisan issue research and analysis – funding think tanks or universities to study gun violence, healthcare systems, or education policy
- Voter registration and education – supporting organizations that register voters and explain how to vote, as long as it's nonpartisan
- Public interest legal work – funding litigation on constitutional issues or civil rights, even if it affects pending legislation
- General advocacy and public education – grants supporting organizations that raise public awareness about issues without targeting specific legislation
- Charitable activities – direct service, research, and institutional grants that serve public welfare
Calculating Your Foundation's Lobbying Ceiling
If your foundation elects the expenditure test (available to most private foundations), you can spend up to 20% of your first $500,000 in annual adjusted net income on permissible lobbying, declining on larger income amounts. A foundation with $1 million in adjusted net income can typically spend up to $100,000 annually on lobbying activities under this test.
Without the expenditure test election, your foundation falls under the "insubstantial part" standard—vague language meaning lobbying cannot be a substantial activity, with the IRS deciding after the fact. This is riskier and why most foundations elect the expenditure test and file Form 4720 accordingly.
Due Diligence When Reviewing Grants
Before approving grants to advocacy organizations, your board should:
- Request grant applications and final reports specify the organization's lobbying strategy and spending
- Review Form 990-N filings (publicly available) to see how much the nonprofit spends on lobbying
- Include grant restrictions explicitly prohibiting the organization from using your funds for grassroots lobbying campaigns
- Confirm the nonprofit understands your foundation's restrictions and can track restricted funds separately
- Ask directly: "Will this grant fund activities to encourage the public to contact legislators about specific bills?"
This diligence protects your foundation from excise tax liability (currently 10% on disqualified expenditures) and protects your board from personal responsibility.
Working with Compliance Specialists
Most family foundations benefit from annual compliance reviews with a tax advisor experienced in private foundation law. Costs typically range from $1,500 to $5,000 annually, depending on grant volume and lobbying complexity. If your foundation makes more than 20 grants per year or regularly supports advocacy work, this investment pays for itself in avoided penalties and cleaner board meetings.
Mercoly helps family foundation boards find and compare specialized advisors and compliance providers that understand private foundation restrictions, so you're not guessing about what's permitted.
Frequently Asked Questions
Q: Can my family foundation fund an organization's general operating budget if part of that budget goes to lobbying? A: Only if the organization segregates restricted funds and can demonstrate your grant didn't subsidize the lobbying portion; most foundations avoid this complexity by restricting grants to specific programs.
Q: Does funding a nonprofit that later engages in unexpected lobbying expose my foundation to penalties? A: Not if your grant agreement explicitly prohibited the lobbying activity and the organization violated its terms; you're liable only if you knowingly funded the restricted activity.
Q: What's the difference between a foundation funding a ballot measure and a nonprofit doing it? A: Foundations cannot fund ballot measures at all; nonprofits can under specific IRS rules, but this is completely off-limits for private foundations regardless of whether the measure names candidates.
Find trusted advisors and compliance specialists for your family foundation on Mercoly.