GuideStar This link opens in a new windowGuideStar offers financial data for over 1.5 million nonprofit organizations in the United States. Data includes revenue tables, expense tables, and balance sheets; organization overview (mission, audience, etc.); annual reports, lists of officers and other key personnel, and access to IRS 990 Forms (typically all available forms since 1997). Users can search this database by keyword and by information such as geographic location, type of nonprofit, IRS Subsection (501(c)3, etc.), and NTEE (National Taxonomy of Exempt Entities) codes.