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State Municipal Index • MT
Montana Property Tax Drift Index
State Avg Drift Score
60/100
Montana Municipal Risk Briefing
State Comptroller & US Census Bureau (MT)August 2026
Montana maintains an average TaxDrift Score of 60/100 across monitored jurisdictions. Overlapping municipal bond issuances and assessment equalization rollbacks determine local millage carrying costs under statutory rules.
Population
1,132,812
Avg Effective Tax Rate
1.1%
Total Tracked Muni Debt
$5.1B
Counties Monitored
12
Statutory Tax Caps & Voter-Approval Rules (MT)
Biennial residential reassessments with statutory tax rate adjustment mechanisms.
Audited Counties in Montana
Montana County Tax Drift Leaderboard
0 Jurisdictions Audited| Rank | Jurisdiction | Drift Score | Risk Tier | Muni Debt / Cap | CAD Lag Spread | 3-Yr Tax Shock | Audit |
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