Form 990 is the Internal Revenue Service (IRS) form entitled Return of Organization Exempt from Income Tax. This federal form must be filed annually by tax exempt organizations. However, some organizations such as churches are exempt from filing, and small organizations are allowed to file Form 990-EZ. The information provided on Form 990 is public information and is available from the website guidestar.org.
You can learn more about Form 990 and Form 990-EZ at IRS.gov.