The IRS recognizes many types of tax-exempt organizations under various sections of the Internal Revenue Code. Here’s a list of common types, each categorized by their tax code section:501(c)(1): Corporations organized under Acts of Congress (e.g., Federal Credit Unions).501(c)(2): Title-holding corporations for exempt organizations.501(c)(3): Religious, charitable, educational, scientific, literary, public safety testing, amateur sports, and animal/child cruelty prevention organizations. (Most common charity type)501(c)(4): Civic leagues, social welfare organizations, and local employee associations.501(c)(5): Labor, agricultural, and horticultural organizations.501(c)(6): Business leagues, chambers of commerce, real estate boards.501(c)(7): Social and recreational clubs.501(c)(8): Fraternal beneficiary societies and associations.501(c)(9): Voluntary employees' beneficiary associations.501(c)(10): Domestic fraternal societies and associations.501(c)(12): Benevolent life insurance associations and mutual ditch, irrigation, telephone, or similar organizations.501(c)(13): Cemetery companies.501(c)(14): State-chartered credit unions and mutual reserve funds.501(c)(19): Veterans' organizations.521(a): Farmers' cooperative associations.527: Political organizations focused on political campaign activities.528: Homeowners associations (income from exempt functions).529: Qualified tuition programs (education savings plans).
These categories cover a wide range of nonprofit activities from charities and religious groups to labor unions, social clubs, and political organizations. Each type has specific rules regarding tax-exempt status, allowable activities, and reporting requirements.
For further details, more specialized types, and their legal definitions, refer to the IRS Publication 557 or the IRS website section on Types of Tax-Exempt Organizations.