Using NTEE to classify non-profit organisations: an assessment of human service and regional applications

The National Taxonomy of Exempt Entities (NTEE) constitutes a major contribution to the field of non-profit research, but is beset by conceptual and practical problems. The application of the taxonomy to the list of charitable organisations recognised by the US Internal Revenue Service (IRS) is also an important resource for research, although it has limitations as well, especially for industry-specific and regional analyses. Using survey data from the Chicago metropolitan region, I show that regional estimates for human services based on only those charitable organisations which are required to file tax returns may miss over 40 per cent of the total number of organisations and under-estimate total revenues by almost half. Finally, I point to conceptual, technical and institutional challenges that must be addressed if the NTEE is to gain maximum utility.