This article discusses a change in reporting requirements for small 501C3 Non-Profit organizations
effective in 2008. Failure to follow the new requirements may cause your group to loose their tax-exempt status.
From the IRS's Web site:
Small tax-exempt organizations, whose gross receipts are normally $25,000 or less, are not required to file Form 990, Return of Organization Exempt From Income Tax, or Form 990-EZ, Short Form Return of Organization Exempt from Income Tax. With the enactment of the Pension Protection Act of 2006 (PPA), these small tax-exempt organizations will now be required to file electronically Form 990-N, also known as the e-Postcard, with the IRS annually. Exceptions to this requirement include organizations that are included in a group return, private foundations required to file Form 990-PF, and section 509(a)(3) supporting organizations required to file Form 990 or Form 990-EZ. In addition, this filing requirement does not apply to churches, their integrated auxiliaries, and conventions or associations of churches.