How to Report Someone for Filing False Taxes
- 1). Gather the following information: the person's name and address, social security number or taxpayer identification number (if you have that information), an explanation of the alleged violation and how you learned of it, the years, the amount of unreported taxes, and your name, address and phone number.
- 2). Complete Form 3949 A online and print it out or write a letter to the IRS that contains the requested information (see Resources).
- 3). Mail the form or the information in letter format to:
Internal Revenue Service
Fresno, CA 93888
Source...