NCCS Data Web: IRS Business Master File


  • All organizations registered as tax exempt with IRS
  • 1.4 million (May ’06)
  • Files available for 1989, 1995-2006
  • Basic descriptive information
    • Mostly from Form 1023 Application for Exemption
    • Gross receipts, assets, tax period from most recent Form 990


  • Missing years in early 1990s
  • 21% of orgs couldn’t be located in a 1990s survey
  • Only the most basic descriptive information
  • Addresses may be out-of-date
  • Some errors on finances
  • Only partial (and probably not representative) coverage of religious organizations

Click on the NCCS Data Web heading to access the database through the Libraries' Databases list.

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