Form 990 Schedule C is the attachment that tax-exempt organizations file with Form 990 or Form 990-EZ to report political campaign activities and lobbying. If you answered “Yes” to the political activity or lobbying questions in Part IV of your core return, Schedule C is required, and it travels with the rest of your 990 package through the IRS electronic filing system.1Internal Revenue Service. Schedule C (Form 990) – Political Campaign and Lobbying Activities
The schedule is split into parts because different rules apply to different kinds of exempt organizations. A 501(c)(3) public charity faces a total ban on campaign intervention and a ceiling on lobbying; a 501(c)(4) social welfare group can do political work as long as it isn’t the primary purpose; a Section 527 political organization exists to do political work. Schedule C sorts them into the right lines.
Which Parts of Schedule C You Complete
Two broad categories of organizations file Schedule C: Section 501(c) groups of every subtype, and Section 527 political organizations.2Internal Revenue Service. Instructions for Schedule C (Form 990) Which parts you fill in depends on your classification and what you actually did during the year.1Internal Revenue Service. Schedule C (Form 990) – Political Campaign and Lobbying Activities
- Part I-A is for every organization that engaged in political campaign activity, regardless of subtype.
- Part I-B is only for 501(c)(3) organizations, and it discloses any Section 4955 excise taxes owed on political expenditures.
- Part I-C is for other 501(c) organizations and Section 527 groups reporting political campaign spending.
- Part II-A is for 501(c)(3) organizations that filed Form 5768 to elect the expenditure test; they report lobbying against their calculated limits here.
- Part II-B is for 501(c)(3) organizations that did not make the 501(h) election, using the substantial part test.
- Part III is for 501(c)(4), 501(c)(5), and 501(c)(6) organizations reporting on dues notices related to lobbying and political spending.
Section 527 political organizations complete only Part I-A. They do not fill in the lobbying parts.
Deadline and Electronic Filing
Schedule C rides with Form 990, so it shares the same due date: the 15th day of the 5th month after the organization’s tax year ends. For a calendar-year filer, that is May 15. A six-month extension pushes the deadline to November 15 for calendar-year organizations.3Internal Revenue Service. Return Due Dates for Exempt Organizations: Annual Return
Since the Taxpayer First Act, Form 990 and Form 990-EZ must be filed electronically. Paper is not an option, and the older waiver process no longer applies to these returns.4Internal Revenue Service. E-file for Charities and Nonprofits Confirm your e-file software supports Schedule C before you start the return.
Political Campaign Activity: What Triggers Part I
Section 501(c)(3) organizations are prohibited from participating or intervening, directly or indirectly, in any political campaign for or against a candidate for public office.5Internal Revenue Service. Restriction of Political Campaign Intervention by Section 501(c)(3) Tax-Exempt Organizations There is no de minimis threshold. Any amount of intervention violates the rule.
Prohibited conduct includes donating to a candidate, endorsing or opposing a candidate publicly, distributing materials that favor one candidate, and providing below-market facilities for campaign events. Nonpartisan voter registration and candidate forums where all candidates are invited on equal terms are generally allowed, but any hint of bias toward a candidate crosses the line.6Internal Revenue Service. Frequently Asked Questions About the Ban on Political Campaign Intervention by 501(c)(3) Organizations: Overview
Other 501(c) organizations, like 501(c)(4) social welfare groups and 501(c)(6) trade associations, are not subject to that absolute prohibition. They may engage in political activity so long as it is not the primary purpose of the organization, and they report their spending on Part I-C rather than Part I-B.
Lobbying: The Two Tests
Lobbying means attempting to influence legislation. It is not banned for 501(c)(3) organizations, but it cannot make up a “substantial part” of the organization’s activities.7Internal Revenue Service. Lobbying How you measure that depends on whether you made the 501(h) election.
Direct lobbying is communication with legislators, their staff, or other government officials who take part in the legislative process, expressing a position on specific legislation. Grassroots lobbying targets the general public, urging people to contact their legislators about a bill or proposal. Both count toward the total, and grassroots lobbying carries a tighter cap under the expenditure test.
The Substantial Part Test
This is the default for 501(c)(3) organizations that have not filed Form 5768. It asks whether lobbying is a substantial part of the organization’s activities based on all facts and circumstances, taking into account volunteer time, paid staff time, and dollars spent.8Internal Revenue Service. Measuring Lobbying: Substantial Part Test No regulation sets a specific percentage, which is why the test is hard to plan around.
An organization that fails the test can lose exempt status. On top of that, Section 4912 imposes a 5% excise tax on the disqualifying lobbying expenditures, and any manager who knowingly approved the spending owes a separate 5%.9Office of the Law Revision Counsel. 26 USC 4912 – Tax on Disqualifying Lobbying Expenditures of Certain Organizations Reporting for this test goes on Part II-B.
The Expenditure Test (Section 501(h))
Public charities that lobby regularly often prefer the expenditure test, which replaces the vague standard with fixed dollar limits. You elect it by filing Form 5768; the election takes effect at the start of the tax year in which it is filed and stays in place until revoked. Private foundations cannot make this election.10GovInfo. 26 CFR 1.501(h) – Expenditures by Public Charities to Influence Legislation
The limit is calculated on a sliding scale tied to your exempt purpose expenditures:11Office of the Law Revision Counsel. 26 USC 4911 – Tax on Excess Expenditures to Influence Legislation
- Up to $500,000 in exempt purpose expenditures: 20% of that amount.
- $500,001 to $1,000,000: $100,000 plus 15% of the amount over $500,000.
- $1,000,001 to $1,500,000: $175,000 plus 10% of the amount over $1,000,000.
- Over $1,500,000: $225,000 plus 5% of the amount over $1,500,000.
The lobbying nontaxable amount is capped at $1,000,000 no matter how large the budget. Grassroots lobbying is limited to 25% of the total lobbying nontaxable amount. An organization with $500,000 in exempt purpose expenditures could therefore spend up to $100,000 on lobbying overall, with no more than $25,000 on grassroots.
Exceeding the limit in a single year triggers a 25% excise tax on the excess. If average lobbying expenditures across a four-year period exceed 150% of the calculated limit, the organization loses 501(c)(3) status. Electing organizations report on Part II-A.
Dues Notices for 501(c)(4), (5), and (6) Organizations
Organizations classified under Sections 501(c)(4), 501(c)(5), and 501(c)(6) that collect membership dues have an added obligation. If any portion of dues funds lobbying or political activities, the organization must notify members that the corresponding share is not deductible as a business expense.12Internal Revenue Service. Proxy Tax: Tax-Exempt Organization Fails to Notify Members That Dues Are Nondeductible Lobbying/Political Expenditures
Skip or botch the notice and the organization owes what the IRS calls a “proxy tax,” equal to the highest corporate rate under Section 11 (currently 21%) applied to the amount that should have been disclosed.13Office of the Law Revision Counsel. 26 USC 6033 – Returns by Exempt Organizations The proxy tax itself is reported on Form 990-T, but the underlying dues-notification data belongs on Schedule C, Part III.
Tracking the Numbers That Go on Schedule C
The IRS does not mandate a particular recordkeeping system, but it does require a method reasonable enough to produce accurate totals. Staff time is usually the trickiest piece: when an employee splits time between lobbying and program work, the organization has to allocate salary and benefits accordingly.
Two approaches are common. A timesheet method logs hours by activity. An incident-report method has employees fill out a form each time they lobby, noting time spent and whether the work was direct or grassroots. Preparation and research time counts too. Under the expenditure test, prep time starts counting once the primary purpose of the research shifts to lobbying; under the substantial part test, time spent formulating positions counts even earlier. Beyond staff time, track printing, postage, advertising, and travel for legislative meetings, plus a reasonable allocation of overhead. Those totals feed directly into Schedule C.
Penalties for Getting It Wrong
The consequences run from excise taxes to loss of tax-exempt status, and the structure differs by which rule was broken.
Political Campaign Intervention
A 501(c)(3) that intervenes in a campaign faces potential revocation. Section 4955 also imposes a two-tier excise tax. Initial taxes are 10% of the political expenditure on the organization and 2.5% on any manager who knowingly approved it, with the manager’s tax capped at $5,000 per expenditure. If the violation is not corrected within the taxable period, a second tier kicks in at 100% of the expenditure on the organization and 50% on any manager who refused to agree to correction, capped at $10,000 for the manager.14Office of the Law Revision Counsel. 26 USC 4955 – Tax on Political Expenditures These taxes are disclosed on Schedule C, Part I-B.
Lobbying
Under the expenditure test, exceeding the limit costs 25% of the excess. A four-year average above 150% of the allowed amount costs 501(c)(3) status. Under the substantial part test, the Section 4912 tax is 5% on both the organization and any knowing manager, and the organization can lose exempt status if the IRS deems lobbying substantial. The clarity of the expenditure test is a large part of why organizations that lobby seriously tend to elect it.
Late or Incomplete Filing
Filing Form 990 late, or filing it without Schedule C when Schedule C was required, triggers penalties under Section 6652. For organizations with gross receipts below $1,208,500, the penalty is $20 per day, up to $12,000 or 5% of gross receipts, whichever is less. For organizations above that threshold, the penalty rises to $120 per day, capped at $60,000.15Internal Revenue Service. Exempt Organizations Annual Reporting Requirements – Filing Procedures: Late Filing of Annual Returns These figures are adjusted periodically for inflation.
The IRS can waive late-filing penalties for reasonable cause. To request abatement, attach a written statement signed under penalties of perjury explaining why the return was late, what prevented an extension request, how the organization exercised ordinary business care, and what steps are in place to prevent a repeat.16Internal Revenue Service. Exempt Organizations Annual Reporting Requirements – Filing Procedures: Abatement of Late Filing Penalties Forgetting or not knowing about the requirement is unlikely to qualify. The IRS wants to see something outside the organization’s control and a responsible response once the problem surfaced.