Montana Mortgage Calculator
See your monthly payment on a Montana home, including property tax at the state average of 0.74%.
Monthly payment in Montana
With 20% down, a 30-year loan at 6.5% and Montana's effective property tax of 0.74%:
| Home price | Principal and interest | Property tax | Insurance (est.) | Total per month |
|---|---|---|---|---|
| $250,000 | $1,264 | $154 | $150 | $1,568 |
| $300,000 | $1,517 | $185 | $150 | $1,852 |
| $400,000 | $2,023 | $247 | $150 | $2,419 |
| $500,000 | $2,528 | $308 | $150 | $2,987 |
| $600,000 | $3,034 | $370 | $150 | $3,554 |
The 6.5% rate is an example. Current rates change weekly; see Freddie Mac for the latest average.
Property tax in Montana
The effective property tax rate in Montana is about 0.74% of a home's value each year. On a $400,000 home that is roughly $2,960 a year or $247 a month. Actual bills depend on county, school district and exemptions.
How Montana property tax compares
The average effective property tax rate across states is about 0.99%. Montana ranks number 18 of 51 from lowest to highest. States with the closest rates:
| State | Effective rate | Monthly tax on $400,000 |
|---|---|---|
| New Mexico | 0.67% | $223 |
| Tennessee | 0.67% | $223 |
| California | 0.71% | $237 |
| Montana | 0.74% | $247 |
| Mississippi | 0.78% | $260 |
| Florida | 0.8% | $267 |
| North Carolina | 0.8% | $267 |
15-year or 30-year loan?
| Loan on $320,000 at 6.5% | Monthly principal and interest | Total interest |
|---|---|---|
| 30-year fixed | $2,023 | $408,142 |
| 15-year fixed | $2,788 | $181,758 |
A 15-year loan costs more each month but saves a large amount of interest. Property tax and insurance in Montana come on top of either payment.
Frequently asked questions
How much is a $400,000 mortgage payment in Montana?
With 20% down at 6.5% for 30 years the payment is about $2,419 a month including estimated tax and insurance.
Sources and method
Page last updated November 2026. See our editorial policy and disclaimer.