IRS Exempt Organizations Business Master File

Downloadable IRS extract listing every registered U.S. tax-exempt organization with EIN, classification and filing details.

Visit IRS Exempt Organizations Business Master File Docs

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Category	Nonprofit & Charity APIs
Authentication	No auth
Pricing	Free
Website	https://www.irs.gov/charities-non-profits/exempt-organizations-business-master-file-extract-eo-bmf
Docs	https://www.irs.gov/charities-non-profits/exempt-organizations-business-master-file-extract-eo-bmf
Last checked	2026-10-14
As JSON	/api/v1/directory/irs-exempt-organizations-business-master-file.json