The Pension Protection Act of 2006 directed the IRS to revoke the tax exemption of any nonprofit that is required to file an annual information return but failed to do so for three consecutive years. Revocation is automatic and mandatory under the law.
As a result hundreds of thousands of exempt organizations had their tax-exempt status revoked. Many were smaller organizations that were not aware of the 2006 law change that required all exempt organizations (except churches) to file annual returns, regardless of how small their annual receipts may be.