Search every US tax-exempt organization

One box for everything. Paste a name, a city, or an EIN (with or without the dash) and we'll resolve it against the full IRS Exempt Organizations Business Master File.

Or browse by…

Map

Map-first browse of geocoded organizations, filterable by NTEE category and state.

Open Map

Data Health

Coverage counts, ingest cycles, and dataset provenance for the whole mirror.

View Data Health

Changes

Field-level change log across monthly IRS cycles, keyed by EIN.

Open Feed

API Docs

Scalar reference for search, organization bundles, compliance, history and admin routes.

Read API Docs

Building something? Use the REST API or the EXEMPTORGS service binding.