The National Taxonomy of Exempt Entities (NTEE) system is used by the IRS and NCCS to classify nonprofit organizations. It is also used by the Foundation Center to classify both grants and grant recipients (typically nonprofits or governments). NCCS and the IRS use the NTEE-CC system, described below, while the Foundation Center uses a slightly different version with more codes, as well as "population/beneficiary" codes to indicate the type of population served and "auspice" codes to indicate religious or governmental affiliation.
Listed below are the major NTEE Codes. Clicking on each of these will take you to the subcode under that sections with details.