Criminal Investigation Division

Contact Information
More information about us, including frequently asked questions, is available on the main Criminal Investigation page.

TIP Line:
(651) 297-5195 or 1-800-657-3500
Call 24 hours a day. You can remain anonymous.
Find out more about the tip line and the kind of information we need to investigate a tip.

Criminal Investigation Unit:
(651) 296-0811
TTY: Call 711 for Minnesota Relay
Phone lines open 8:00 a.m. - 4:30 p.m. weekdays.
Fax: (651) 556-3105
E-mail us at: tax.fraud@state.mn.us.

Mailing Address:

Minnesota Department of Revenue
Criminal Investigation Division
600 North Robert Street
St. Paul, MN 55146-6590
Driving directions to the Department of Revenue's building