Search 1.9 million IRS-registered tax-exempt organizations — verify 501(c)(3) status, look up by EIN, and compare nonprofits by sector, location, or assets.
For: Foundations, grant officers, donor-advised fund admins, compliance teams running 501(c)(3) verification, fundraising and prospect research
No account needed. Chat with AI to query the data instantly.
Search and verify 1.9M+ IRS-registered tax-exempt organizations. EIN lookup, fuzzy name search, location browse, 501(c)(3) verification, and financial data. Updated daily from the IRS Exempt Organizations Business Master File.
The IRS Exempt Organizations Business Master File (BMF), refreshed daily. Every IRS-recognized tax-exempt organization in all 501(c) subsections is included — 501(c)(3) charities, 501(c)(4) social welfare, 501(c)(6) trade associations, and the rest.
It confirms IRS recognition as of the last BMF refresh. For a tax deduction or grant decision, also pair it with the IRS Tax Exempt Organization Search (Pub 78) which covers deductibility specifically. Revoked organizations remain in the BMF with a revocation date.
Summary fields from the BMF — gross receipts and asset amounts in coded ranges — plus references that link out to detailed Form 990 financials in the IRS-990 dataset. Use the IRS-990 dataset directly for line-level financials, officer compensation, grants paid, and program expense ratios.
Tokenized matching with normalization for legal suffixes ('Inc', 'Foundation', 'Trust') and common abbreviations. Filters by state, city, NTEE code, and subsection are available on the same call to narrow results.
Same dataset, exposed as a Model Context Protocol server. Drop the URL into Claude Desktop, Cursor, VS Code, Cline, Windsurf, or any other MCP client.
Model Context Protocol lets AI tools call external capabilities securely through a single URL. This bundle groups tools behind an MCP endpoint that many clients can use.
Skip the manual setup! Use the .mcpb file format for one-click installation. Check the Claude Desktop tab for setup instructions.
Select ChatGPT, Cursor, Claude Code, or another tab for copy-paste config.
No sign-up required. Chat with AI and run live queries instantly.