Form 990 Red Flags & Common Mistakes: A Nonprofit’s “Public Resume” Checklist (and How to Fix Them)

Form 990 is a public document that many people use as a primary source of information about a nonprofit, so errors can hurt credibility.
File by the 15th day of the 5th month after year-end (May 15 for calendar-year filers), and e-file when required.
Avoid late filing (penalties can apply and three consecutive missed filings can trigger automatic revocation of tax-exempt status)