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ProPublica Nonprofit Explorer - Tax Data

Search nonprofits and extract IRS tax filing data from ProPublica Nonprofit Explorer. Get revenue, assets, expenses, EIN, NTEE codes, and 990 filings for 1.8M+ organizations.

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ProPublica Nonprofit Explorer - Tax & Financial Data

Search and extract nonprofit organization data from ProPublica's Nonprofit Explorer, covering 1.8M+ tax-exempt organizations with IRS 990 filing data.

Features

1.8M+ nonprofits: Search the full IRS tax-exempt organization database
Financial data: Revenue, income, assets, expenses from IRS 990 filings
Tax filings: Optionally fetch detailed 990 filing breakdowns with PDF links
NTEE classification: National Taxonomy of Exempt Entities codes with human-readable categories
Tax-exempt status: 501(c)(3), 501(c)(4), and other subsection classifications
Free API: Uses ProPublica's free public API — no authentication needed

Input Parameters

Parameter	Type	Default	Description
`searchQuery`	string	(required)	Organization name search (e.g., 'Red Cross')
`state`	string	(empty)	US state filter (e.g., 'CA', 'NY')
`nteeCode`	string	(empty)	NTEE category code (e.g., 'P' for Human Services)
`includeFilings`	boolean	false	Fetch detailed IRS 990 filing data (slower)
`maxResults`	integer	100	Max organizations to return (0 = all)

Output Example

{
    "name": "American National Red Cross",
    "ein": "53-0196605",
    "city": "Washington",
    "state": "DC",
    "nteeCode": "P210",
    "nteeCategory": "Human Services",
    "subsectionCode": "501(c)(3) - Charitable",
    "income": 4400554903,
    "revenue": 3804377344,
    "assets": 4565143729,
    "url": "https://projects.propublica.org/nonprofits/organizations/530196605"
}

Use Cases

Grant researchers: Find organizations by category, size, and location
Nonprofit benchmarking: Compare revenue and asset data across similar organizations
Donors & foundations: Due diligence research on nonprofit financials
Journalists: Investigate nonprofit spending and compensation patterns
Academic researchers: Analyze the nonprofit sector at scale
Compliance professionals: Verify tax-exempt status and filing history

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