A DEPARTMENT OF REVENUE Property Valuation Changes In accordance with 15-7-111, MCA, the department has made the consumer price index and growth rates of Montana Personal Income and the estimated annualized change in property taxes levied in the last 10 years available on our website. For the complete report or information by county, please visit www.MTRevenue.gov/2022 PropertyValueChanges A DEPARTMENT OF REVENUE Property Valuation Changes In accordance with 15-7-111 , MCA , the department has made the consumer price index and growth rates of Montana Personal Income and the estimated annualized change in property taxes levied in the last 10 years available on our website . For the complete report or information by county , please visit www.MTRevenue.gov/2022 PropertyValueChanges