Tax information for charities and other nonprofits.

Public access to Form 990’s.

An association of state offices charged with oversight of charitable organizations in the United States.

An effort to consolidate the information and data requirements of all states that require registration of nonprofit organizations performing charitable solicitations within their jurisdictions.

The BBB Wise Giving Alliance (the Alliance) helps donors make informed giving decisions and advances high standards of conduct among organizations that solicit contributions from the public. The Alliance produces in-depth evaluative reports on national charities based on comprehensive Standards for Charity Accountability and publishes a quarterly magazine, the Wise Giving Guide.

Charity Navigator is America’s premier independent charity evaluator. It helps charitable givers make intelligent giving decisions by providing in-depth, objective ratings and analysis of the financial health and accountability & transparency of America’s largest charities. Use Charity Navigator’s simple searchable database to find a charity you can trust and support.

Sponsored by the American Institute of Philanthropy, a nationally prominent charity watchdog service whose purpose is to help donors make informed giving decisions.

The Foundation Center terms itself the nation‘s leading authority on philanthropy and is dedicated to serving grantseekers, grantmakers, researchers, policymakers, the media, and the general public.

The Independent Sector is the leadership forum for charities, foundations, and corporate giving programs committed to advancing the common good in America and around the world.

The Council on Foundations is a membership organization of more than 2,000 grantmaking foundations and giving programs worldwide that provides leadership expertise, legal services and networking opportunities – among other services – to its members and to the general public.

The National Center for Charitable Statistics (NCCS) is the national clearinghouse of data on the nonprofit sector in the United States

The National Center on Philanthropy and the Law was established at New York University School of Law to explore a broad range of legal issues affecting the nation's nonprofit sector and to provide an integrated examination of the legal doctrines related to the activities of charitable organizations.

A well-informed blog providing current national and international news about nonprofit organizations and the laws affecting them.