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.
Every record in this dataset can be traced back to its primary source at https://www.irs.gov/charities-non-profits/exempt-organizations-business-master-file-extract. Underlying content is a US federal government work (public domain under 17 USC §105); our derived data is licensed CC0 1.0.