You verify a nonprofit’s 501(c)(3) status by looking it up in the IRS Tax Exempt Organization Search using its Employer Identification Number, then confirming the listing shows the organization as eligible to receive deductible contributions. The whole check takes under five minutes and costs nothing. Everything else, from charity rating sites to the badge on a donation page, is secondary to that one federal record. The process, step by step, with a worked example:
Step 1: Get the EIN, not just the name
Names are unreliable. Many organizations share similar names, some deliberately, and the IRS database matches on exact legal names that often differ from what a group calls itself publicly. The Employer Identification Number is a nine-digit federal tax ID, written in the form 12-3456789, and it is unique.
Legitimate nonprofits publish their EIN. Look in the website footer, the donation page, the annual report, or the receipt from a prior gift. If an organization asking for money will not give you its EIN, stop there.
Step 2: Search the IRS database
Go to the IRS Tax Exempt Organization Search. Choose the search-by-EIN option and paste in the number. The tool draws on several IRS data sets. The one that matters for donors is Publication 78, the list of organizations eligible to receive tax-deductible charitable contributions.
A result in the Pub. 78 data with a deductibility code of PC means the organization is a public charity and contributions are generally deductible up to the standard percentage limits. Other codes exist for private foundations and other exempt types, and the IRS explains each code on the same site. If the EIN returns nothing in the Pub. 78 data, the organization may be exempt under a different section of the tax code, may be too new to appear, or may not be exempt at all. None of those is a reason to assume deductibility.
Step 3: Check for revocation
The same search tool includes the automatic revocation list. Organizations that fail to file a required annual return for three consecutive years lose their exemption automatically. A group can have had 501(c)(3) status in the past and not have it now. If the EIN appears on the revocation list without a later reinstatement, gifts made after the revocation date are not deductible.
Step 4: Read the Form 990
Most 501(c)(3) organizations above a small revenue threshold file an annual Form 990 with the IRS, and the search tool links to filed copies. Very small organizations file a short electronic postcard instead, and new organizations may not have filed one yet. A 990 tells you the organization’s revenue, expenses, program spending, and the names of its officers. You do not need to read the whole thing. Confirm the organization exists, has filed, and describes activities that match what its website claims.
Step 5: Confirm state registration if you want a second check
Many states require charities that solicit donations to register with the state attorney general or a charities bureau, and most of those offices run public lookups. This is optional for a federal deductibility check, but it catches organizations that have federal status and are not registered to solicit where you live.
Worked example
Suppose you are considering a gift to Fight For A Living Wage, a nonpartisan grassroots 501(c)(3) that works on affordability. The organization publishes its EIN, 99-1097858, on its site. That is the number you paste into the IRS search. You then confirm three things on the results page: that the EIN returns a record, that the record appears in the Pub. 78 data with a public charity deductibility code, and that the EIN does not appear on the automatic revocation list. If all three check out, the federal record supports treating a cash gift as a deductible charitable contribution, subject to the rules that apply to your own return.
Run that same check on any organization, from a national charity to a local food pantry. The process does not change.
What verification does not tell you
Exempt status means the IRS recognizes the organization as a charity for tax purposes. It does not rate effectiveness, efficiency, or governance. A poorly run organization can be fully exempt. Status verification is the floor, not the ceiling, of due diligence. For questions about how an organization spends money, the Form 990 and the organization’s own annual report are the next documents to read.
How deductibility works, in general terms
A gift to a registered 501(c)(3) public charity is generally deductible, but how much of it reduces your tax depends on how you file. The IRS explains in Topic No. 506 that, beginning with tax year 2026, taxpayers who do not itemize may deduct up to $1,000 ($2,000 if filing jointly) of cash contributions to certain qualified organizations. Taxpayers who itemize claim charitable gifts on Schedule A, and for 2026 returns a new floor applies to itemized charitable deductions, so a small portion of an itemizer’s gifts may not count. The percentage-of-income limits and the details of that floor are set out in IRS Publication 526 for the applicable tax year.
Two record-keeping rules apply regardless of how you file. Any cash gift needs a bank record or a written receipt from the organization. Any single gift of $250 or more needs a contemporaneous written acknowledgment from the charity stating the amount and whether you received anything in return.
Those are the mechanics. Whether a particular gift lowers your own bill is a question for your return and, if the amounts are large, for a tax professional. For a longer treatment of whether a gift to a nonprofit is deductible and what the 501(c)(3) designation does and does not guarantee, the organization’s own explainer covers the same ground from the donor’s side.
The five-minute checklist
Get the EIN from the organization. Search it in the IRS Tax Exempt Organization Search. Confirm a Pub. 78 listing with a public charity code. Confirm the EIN is not on the revocation list. Glance at the most recent Form 990 if one exists. Keep the receipt. That sequence protects you from the two failure modes that matter: giving to an organization that is not what it claims, and claiming a deduction the IRS will not honor.
