Welcome to the National Center for Charitable Statistics

NCCS is a research center and open data platform dedicated to advancing the knowledge and understanding of the nonprofit and charitable sector.

NCCS is part of the Center on Nonprofits and Philanthropy at The Urban Institute
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A11y description

Datasets

The data catalog contains a broad array of data on the nonprofit sector including IRS 990 tax data, survey panels, and political action committees.

Census Crosswalks

A framework for seamlessly adding census data to your nonprofit panel.

census spatial crosswalks

NCCS Core Series

A comprehensive panel of nonprofit organizations that file IRS form 990

990 financial-trends nonprofits 990

IRS 990 Efilers

A comprehensive panel of nonprofit organizations that file IRS form 990.

990 financial-trends nonprofits 990

Form 990-N ePostcard Filers

A database of small nonprofits that do not file full 990 forms.

990N grassroots orgs

Pub78 - Nonprofits Eligible to Receive Tax Deductible Donations

The catalog of all nonprofits currently eligiable to receive tax-deductible donations.

charities 501c3 sampling framework

Revocations Database

Database of all nonprofit entities that have had their tax exempt status revoked

revocations

SOI Exempt Organizations Microdata

The statistics of nonprofit charitable and other tax-exempt organizations produced by the Statistics of Income (SOI) Division.

990 SOI sampling 990

527 Political Action Committees

Electronic filings made by 527 organizations.

elections campaign finance 501c4


Getting Started with NCCS Data

Learn more about the NCCS data series through the research handbook.

NCCS Research Guide




Featured Stories
methods

Estimating Sector Size With Payroll Taxes

This data story outlines the process for estimating the amount of payroll taxes nonprofits pay annually.





Resources
project

Regulation of Nonprofits and Philanthropy Project

A project advancing research and practice on nonprofit regulatory frameworks and their impact on the sector

survey
project

National Taxonomy of Exempt Entities (NTEE) Codes

IRS Activity Codes Used to Categorize Nonprofits

metadata
project

Nonprofit Trends and Impacts

A nationally representative survey of nonprofits

survey
brief

2019 Nonprofit Sector in Brief

The 2019 Sector Brief discusses trends in the number and finances of 501(c)(3) public charities and key findings on two important resources for the nonprofit sector: private charitable contributions and volunteering.

nccscore sector-brief trends
brief

2018 Nonprofit Sector in Brief

The 2018 Sector Brief discusses trends in the number and finances of 501(c)(3) public charities and key findings on two important resources for the nonprofit sector: private charitable contributions and volunteering.

nccscore sector-brief trends
brief

2015 Nonprofit Sector in Brief

The 2015 Sector Brief discusses trends in the number and finances of 501(c)(3) public charities and key findings on two important resources for the nonprofit sector: private charitable contributions and volunteering.

nccscore sector-brief trends