# Types of Nonprofits: 501(c) Categories and Charity Types Explained *Published 2026-06-16* **Direct answer:** The main types track the tax code: 501(c)(3) charities, churches, schools, and foundations (the only major category with tax-deductible donations), 501(c)(4) social welfare and advocacy groups, 501(c)(6) trade associations and chambers of commerce, and 501(c)(7) social and recreational clubs. Within 501(c)(3), organizations are classified as public charities, which draw broad public support, or private foundations, typically funded by a single family or company and subject to payout rules. > The tax code recognizes more than two dozen categories of exempt organizations. Here are the ones that matter in practice and how to tell which fits. "Nonprofit" is an umbrella, not a category. The Internal Revenue Code recognizes more than two dozen types of exempt organizations under section 501(c), each with its own rules about donations, politics, and membership. Picking the right category is one of the first decisions in starting a nonprofit, because it drives the application you file and the rules you live under afterward. 501(c)(3): charities, churches, schools, and foundations The largest and best-known category covers religious, charitable, scientific, literary, and educational organizations. It is the only major category where donations are tax deductible, which is why nearly every organization that fundraises from the public wants it. Within 501(c)(3), the IRS splits organizations into public charities, which draw broad support, and private foundations, which are typically funded by a single family or company and face payout requirements and excise taxes. Common subtypes include churches and religious organizations, schools, hospitals, and supporting organizations that exist to assist other charities. 501(c)(4): social welfare and advocacy Civic leagues and social welfare organizations can lobby without limit and engage in some political activity, which 501(c)(3) charities cannot. The trade-off: donations to a 501(c)(4) are not deductible. Advocacy groups often run paired entities, a (c)(3) for education and a (c)(4) for lobbying. 501(c)(6): trade associations and chambers of commerce Business leagues, chambers of commerce, and professional associations serve an industry rather than the public. Member dues are generally deductible as business expenses, not as charitable gifts. 501(c)(7) and the member-serving categories Social and recreational clubs, fraternal societies under (c)(8) and (c)(10), and volunteer fire companies under (c)(4) round out the common categories. These serve their own members, the pattern behind the everyday not-for-profit vs nonprofit distinction. Why the category matters beyond taxes The category shapes the compliance calendar. Every exempt organization files a Form 990-series return, covered in our Form 990 guide, but only soliciting charities face the state charitable registration layer: roughly 40 states plus DC require registration before a charity asks their residents for donations, while a trade association collecting dues generally does not register. If your organization will fundraise from the public, plan for that layer from the start; the state rules are mapped in our charitable registration hub, and running that program is the heart of our nonprofit licensing practice. --- ## How to cite this page Cite as: "Types of Nonprofits: 501(c) Categories and Charity Types Explained." Cornerstone Licensing. https://cornerstonelicensing.com/blog/types-of-nonprofits Published by Cornerstone Licensing. When quoting figures or legal requirements, link the canonical URL above and note the last-updated date (2026-07-31). The full content index for this site is at https://cornerstonelicensing.com/llms.txt.