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The IRS provides detailed information on the process of gaining and maintaining tax exempt status under federal law at its IRS Starting Out - Stay Exempt web page.
Once a nonprofit corporation has gained tax exempt status, it must follow numerous operational and reporting requirements to keep that status. For example, it cannot provide substantial private benefits to individuals outside of its nonprofit mission, it is limited and even prohibited from engaging in certain types of political activities, and it must comply with IRS reporting requirements. Failure to comply with these requirements can lead to penalties or even the loss of tax exempt status. Some of the key areas that pose threats to maintaining federal tax exemption include:
Unrelated Business Income - A nonprofit corporation's income that is unrelated to the corporation's purpose may not be tax exempt. See Unrelated Business Income Defined for more information.
Political Campaign Activity - Federal law strictly prohibits 501(c)(3) nonprofit corporations from engaging in poltical campaign activity. See The Restriction of Political Campaign Intervention by Section 501(c)(3) Tax-Exempt Organizations for more information.
Lobbying - Federal law limits 501(c)(3) nonprofit corporations' lobbying activities. While these corporations may engage in some lobbying, too much lobbying activity risks loss of tax-exempt status. See Lobbying for more information.
The IRS maintains a number of interactive courses available to help organizations maintain their tax exempt status at its IRS Starting Out - Existing Organizations: Maintaining Your Tax-Exempt Status web page.
For further information about the topics discussed on this page, see:
IRS material providing extensive resources for organizations seeking to obtain and maintain federal tax exempt status:
How Nonprofits Can Avoid Losing Tax-Exempt Status published by the Michigan State University College of Law Small Business and Nonprofit Clinic (fact sheet highlighting key points in obtaining and maintaining tax-exempt status)
Executive Compensation Policies from the National Council of Nonprofits (explaining why it is wise to have a written policy for the compensation of nonprofit executives)