When most people say "nonprofit" they mean a 501(c)(3), the charitable type whose donors can deduct their gifts. That is the most common path, and for good reason. But it is not the only tax-exempt type, and choosing the wrong one is an expensive mistake to unwind. This is a quick, side-by-side look at the types a small organization is most likely to consider.
The short version: only gifts to a 501(c)(3) are tax-deductible as charitable donations. The other types are still nonprofits, but a payment to a 501(c)(4), (c)(5), (c)(6), or (c)(7) is not a deductible charitable gift.
How the common types compare
| Requirement | 501(c)(3) Public Charity | 501(c)(3) Private Foundation | 501(c)(4) | 501(c)(5) | 501(c)(6) | 501(c)(7) |
|---|---|---|---|---|---|---|
| Who it is for | Charitable, religious, educational, or scientific work serving the public | A 501(c)(3) funded by one source, usually a family or company, that mostly makes grants | Social-welfare and advocacy groups, civic leagues | Labor, agricultural, and horticultural groups | Business leagues, trade and professional associations, chambers of commerce | Social and recreational clubs for members |
| Donations deductible to the giver? | Yes, as a charitable gift | Yes, at lower income limits | No | No (member dues may be a business expense) | No (dues may be a business expense to the payer) | No |
| Exemption application form | Form 1023 or 1023-EZ | Form 1023 | Form 1024-A (plus Form 8976 notice) | Form 1024 | Form 1024 | Form 1024 |
| Annual return | Form 990, 990-EZ, or 990-N by size | Form 990-PF every year | Form 990, 990-EZ, or 990-N by size | Form 990, 990-EZ, or 990-N by size | Form 990, 990-EZ, or 990-N by size | Form 990, 990-EZ, or 990-N by size |
| Lobbying | Limited (insubstantial part, or 501(h) election) | Effectively not allowed | Unlimited, can be the main activity | Unlimited, if germane to purpose | Unlimited, if germane to purpose | Limited |
| Political campaign activity | Prohibited | Prohibited | Allowed if not the primary activity | Allowed if not the primary activity | Allowed if not the primary activity | Not its purpose |
| Member-dues treatment | Not a dues model in most cases | Not applicable | If dues fund lobbying or politics, must disclose the nondeductible share or pay a proxy tax | Dues may be a business expense; lobbying-dues disclosure applies | Dues may be a business expense; must disclose the nondeductible lobbying share or pay a proxy tax | Member-funded; dues are personal, not deductible |
- Every type needs an EIN, even with no employees.
- 990-series size guide: generally the 990-N e-Postcard when gross receipts are normally $50,000 or less, the 990-EZ when gross receipts are under $200,000 and assets under $500,000, otherwise the full 990. Private foundations always file the 990-PF.
- Only 501(c)(3) public charities use the public-support test, which separates a public charity from a private foundation.
- Charitable-solicitation registration is a state-by-state requirement, mainly for organizations that solicit donations from the public. Check your state.
- Donor deduction limits for 501(c)(3) gifts (commonly up to 60 percent of income for cash to a public charity, lower for a private foundation or for appreciated property) are donor-side rules that can change.
Two kinds of private foundation: grant-making vs operating
The private foundation column above describes the common non-operating foundation: a grant-maker, usually funded by one family, company, or individual, that mostly writes checks to other charities. A non-operating foundation must pay out roughly 5 percent of the value of its non-charitable-use assets each year or owe an excise tax on the shortfall, and its donors deduct gifts at the lower private-foundation income limits (generally 30 percent of adjusted gross income for cash).
A private operating foundation is different. Instead of mainly making grants, it actively runs its own charitable programs, for example a museum, research institute, or historic site that the foundation itself owns and operates. To qualify under section 4942(j)(3) it must meet an income test (spending at least 85 percent of the smaller of its adjusted net income or its minimum investment return directly on the active conduct of its own programs) plus one of three further tests based on its assets, its endowment, or its public support. In exchange it is not subject to the 5 percent annual payout excise tax, and its donors receive the more favorable public-charity-level deduction limits (generally 50 percent of adjusted gross income for cash). Both kinds still file Form 990-PF and follow the private-foundation rules. This is general education, not legal or tax advice.
The contrast that matters most: 501(c)(3) vs 501(c)(6)
If you are weighing a charity against a trade or professional association, this is the line. A 501(c)(3) exists for a public charitable purpose, its donors deduct their gifts, it applies on Form 1023, and it cannot intervene in political campaigns at all. A 501(c)(6) business league exists to promote a shared business interest, its members' payments are generally a business expense rather than a charitable deduction, it applies on Form 1024, and it may lobby freely on matters germane to its purpose. That single deductibility difference is why a chamber of commerce and a food bank send very different receipts.
Which might you be?
If your work serves the broad public and you want donors to deduct their gifts, you are almost certainly looking at a 501(c)(3). If you are organizing a trade or professional association or a chamber, look at 501(c)(6). A members-only social or recreational club is usually a 501(c)(7). An advocacy or civic-betterment group that wants to lobby without limit may be a 501(c)(4). When you are not sure, that is exactly the moment to ask a qualified professional before you file, because the type drives your form, your return, and how your money is treated.
If a 501(c)(3) is your path, the Nonprofit Formation (in the Formation Suite) walks you through it and drafts your state filings and IRS application, all 50 states. Already formed and tracking your obligations? The Compliance Tracker keeps your filings on schedule.