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The information on this page (the dataset metadata) is also available in these formats.


via the DKAN API

National Center for Charitable Statistics (NCCS) Core Files

National Center for Charitable Statistics (NCCS) consolidations of the IRS Return Transaction File, containing all organizations of the given type (public charity, private foundation, or other tax exempt organization) filing a Form 990 or 990-EZ.

These fields are compatible with DCAT, an RDF vocabulary designed to facilitate interoperability between data catalogs published on the Web.
Release Date
Homepage URL
Temporal Coverage
1989-01-01 05:00 to 2019-12-31 05:00
Contact Name
Thiyaghessan Poongundranar
Data Dictionary Type
HTML - See resource link above
Contact Email
Public Access Level
Harvested from CNP Datasets CSV
Harvest Source TitleCNP Datasets CSV
Harvest Source URI
Last Harvest Performed2019-03-12 10:20
These fields are specific to Urban Institute.
Geographic Level
Units of Observation
Universe Target Population
The population represents all active and reporting tax exempt organizations filing a Form 990 or 990-EZ for the given fiscal year, or the most recent fiscal year if information for the given fiscal year is not available.
Data Quality or Limitations

Financial fields are provided by the IRS and are subject to verification. "Estimate" fields represent NCCS calculations for fields appearing on the Form 990 but are not provided by the IRS. Estimates are calculated based on financial proportions for organizations of similar type (NTEE code) and size (expenses) and are intended only for us in large aggregations; for highly specific research, NCCS recommends referring directly to the Form 990 images. NCCS also recommends users exclude all cases which are flagged "Out" on the field "OUTNCCS," as these represent organizations deemed out of scope by NCCS.

Urban Publications
Usage Limitations

Contains information for all tax exempt organizations filing a Form 990 or 990-EZ. Note that this will exclude organizations falling below the minimum filing threshold for the Form 990-EZ (<$50,000 in gross receipts), as well as organizations not required to register with the IRS (organizations with <$5,000 in gross receipts, and religious congregation). File will contain all the returns received by the IRS in a certain calendar year as well as returns of organizations that have filed in the preview two years, but do not appear in the present year's files.

Citation Requirements

Urban Institute, National Center for Charitable Statistics, Core Files ([Public Charities, Private Foundations, or Other 501(c ) Organizations], Year)