State Comparison
Montana vs Idaho
Side-by-side comparison of 16 financial metrics using documented public datasets and estimates, with sources listed below.
Overall Score
Cost of Living
Housing
Taxes
Income & Employment
Business
Insurance & Living
Key Takeaways
- 1
Idaho leads in 9 of 16 financial metrics, making it the more favorable state overall.
- 2
Housing: Median home prices are $476,000 in Montana vs $482,000 in Idaho — a $6,000 difference.
- 3
Taxes: Montana has a 5.65% top income tax rate while Idaho has a 5.3% top rate. Property tax rates are 0.61% vs 0.5%.
- 4
Cost of Living: Montana's index is 105.9 and Idaho's is 101.7 (national average = 100).
Run the Numbers
Use our free calculators with real Montana and Idaho data to model your specific scenario.
Frequently Asked Questions
Is Montana or Idaho more affordable?
Idaho has a lower cost of living index (101.7) compared to Montana (105.9), where 100 is the national average. However, affordability depends on your specific situation — compare housing, taxes, and income together for a complete picture.
Which state has lower taxes — Montana or Idaho?
It depends on what you earn, spend, and own — the three rates below apply to different bases (income, purchases, and home value), so they cannot be added into a single burden figure. On the headline rates alone, Montana is lower on more of them. Montana has a 5.65% top income tax, 0% state sales tax, and a 0.61% effective property tax rate. Idaho has a 5.3% top income tax, 6% state sales tax, and a 0.5% effective property tax rate.
What are housing costs in Montana vs Idaho?
The typical home value in Montana is $476,000 compared to $482,000 in Idaho (Zillow Home Value Index, June 2026). For renters, HUD's FY2026 Fair Market Rent for a 2-bedroom unit — the 40th-percentile gross rent, not an average — is $1,558/month in Montana vs $1,410/month in Idaho.
Which state is better for starting a business — Montana or Idaho?
LLC filing costs are $35 in Montana vs $100 in Idaho, with annual fees of $20 and $0 respectively. Montana's 5.65% top tax rate compared to Idaho's 5.3% rate may also factor into your decision.
Should I move from Montana to Idaho?
It depends on your priorities. Idaho wins in 9 of 16 metrics we compared. Use our free calculators to model your specific financial scenario — including salary, property tax, and cost of living for each state.
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Related Comparisons
Comparing Montana and Idaho
When deciding between living in Montana or Idaho, the financial picture goes beyond just one metric. This comparison analyzes 16 key financial indicators drawn from the U.S. Census Bureau (American Community Survey), the Tax Foundation, HUD Fair Market Rents, Zillow's Home Value Index, the NAIC's insurance databases, the U.S. Department of Labor, C2ER's Cost of Living Index, and state agencies, to give you a comprehensive overview.
Montana (MT) has a median household income of $75,340 with a cost of living index of 105.9. Idaho (ID) has a median household income of $81,166 with a cost of living index of 101.7. Income figures are Census ACS 1-year estimates (table B19013, 2024); the cost-of-living index is C2ER's Q1 2026 survey via MERIC, where 100 is the national average of surveyed cities.
These numbers are estimates. Individual circumstances vary based on location within each state, family size, profession, and lifestyle. Use our free Montana calculator or Idaho calculator to model your specific financial scenario.
Sources per metric are named in each row's note above. Last reviewed . Some values are estimates; consult a qualified professional for financial advice.