Where's My Refund: http://revenue.mt.gov/online_services/wheres-my-refund
Call our Citizen Services Call Center for assistance with your individual, nonresident, or business tax questions. Our hours of service are Monday through Friday, 8 a.m. to 5 p.m. (Mountain Time)
Toll-Free - 1 (866) 859-2254
Helena (Local) - (406) 444-6900
Telephone Device for the Deaf - TDD - (406) 444-2830
Human Resources - (406) 444-9858