This month, the IRS instituted regulations requiring tax-exempt organizations that file at least 250 returns in a calendar year to file annual returns electronically. Organizations with total assets of $100 million or more must file tax year 2005 returns electronically. And beginning next year, organizations of $10 million or more and private foundations regardless of asset size must file electronically. The IRS has a web site devoted to answering questions and providing resources to help nonprofits file electronically.