Citizen Services Call Center
Phone: (406) 444-6900
TDD: Montana Relay 711
Email: DORHelp@mt.gov
We’re available Monday through Thursday, 9:00 a.m. until 4:00 pm and Friday, 9:00 a.m. until 1:00 p.m.
Taxpayer Advocate
If you need help working with the department or figuring out our audit, appeals, or relief processes, the Taxpayer Advocate can help.
Contact The Taxpayer Advocate Online
Mail: 125 N Roberts Street Helena, MT, 59601
Phone: (406) 444-6789
TDD: Montana Relay 711
Fax: (406) 444-3696
Email: DORTaxpayerAdvocate@mt.gov