Every US 501(c) tax-exempt organization in the IRS BMF. **1,264,157 unique nonprofits** with EIN (Employer Identification Number), legal name, address, NTEE classification code (A-Z major group: Arts, Education, Health, Human Services, Religion, etc), 501(c) subsection (03=public charity, 04=social welfare, 06=business league, 07=social club, 08=fraternal, 09=VEBA, 14=credit union, etc), exemption ruling date, deductibility status, private-foundation code, organization type (Corp / Trust / Co-op / Partnership / Association), most recent return tax period, and financial summary fields (total revenue, total assets, total income). Sourced from irs.gov/pub/irs-soi/eo{1,2,3,4}.csv (4 regional CSVs: NE, MW, S, W). Foundational layer for any US nonprofit lookup — joins to ProPublica Nonprofit Explorer for full Form 990 financial history.
The listed URL identifies a referenced source; it does not by itself document the ingestion endpoint. Referenced source URL: https://www.irs.gov/charities-non-profits/exempt-organizations-business-master-file-extract. Source-specific terms apply. US federal employee-authored works are generally public domain under 17 USC 105; non-federal and third-party material retains source terms. Free or keyless access does not alter source terms. Metadata and normalization authored by MORVS (AI Analytics LLC) are CC0 only where expressly stated.