According to the Gallatin County Treasurer, 2023 property taxes have been adjusted higher ” based on a recent ruling from the Montana Supreme Court which authorized the Department to levy the maximum mill amount regardless of the budget, the County has been directed to collect the full 95 mills, and your Second Half tax bill will be amended accordingly. We expect to mail the adjusted bills in mid-March with a due date of May 31. Read more at: https://www.gallatinmt.gov/treasurer-property-tax-division