Calcist

Style

Buttons

Spacing

How much to show

Decimal places

Text size

Montana mortgage calculator

Your monthly payment on a home in Montana, with the state's average effective property tax rate (0.69%) and median home value already filled in. Change any number to match the home you're looking at.

Down payment
Taxes, insurance, PMI, HOA and extra payments

Private: calculated on your device. Nothing you type is sent anywhere.

Estimates for planning, not financial, tax or legal advice. Figures use US rules unless the page says otherwise.

Next: Check the price fits your income with the home affordability calculator, or compare Montana with other states in the mortgage calculator by state.

Property tax and home values in Montana

In 2024, Montana homeowners paid a median of $2,939 a year in property tax, and the median owner-occupied home was worth $425,400, according to the Census Bureau's American Community Survey. Dividing the tax by the value gives an effective rate of about 0.69% of the home's value each year.

That ranks Montana 19th lowest of the 50 states and DC, below the middle of the pack, and 22% lower than the US figure of 0.89%. The median home value is 18% above the US median of $360,600. On a $425,400 home, Montana's rate works out to about $2,935 a year, $851 a year less than the $3,786 it would pay at the national rate.

Example: the payment on a median Montana home

Take the median price of $425,400 with 20% down ($85,080), a $340,320 loan for 30 years, and an example rate of 6.5%. The 6.5% is only an example to show the math, not today's rate; type in the rate you're quoted.

M = P × i ÷ (1 − (1 + i)^−n)

With P = $340,320, i = 0.065 ÷ 12 and n = 360, principal and interest is $2,151.05 a month. Property tax at 0.69% adds $244.61 and insurance (assumed $1,800 a year) adds $150.00. With 20% down there's no PMI, so the full payment is $2,545.66 a month.

Home price20% downPrincipal and interestProperty taxMonthly total
$325,000$65,000$1,643.38$186.88$1,980.26
$425,400 (median)$85,080$2,151.05$244.61$2,545.66
$650,000$130,000$3,286.75$373.75$3,810.50

6.5% fixed for 30 years, 0.69% property tax and $1,800 a year of insurance. Totals include insurance.

Neighboring states

Property tax on the same $425,400 home at each state's effective rate:

StateEffective tax rateMedian home valueTax on a $425,400 home
Montana0.69%$425,400$2,935
South Dakota1.02%$289,600$4,339
North Dakota0.96%$266,100$4,084
Wyoming0.57%$339,500$2,425
Idaho0.43%$446,400$1,829

Among these, South Dakota is highest at 1.02% and Idaho is lowest at 0.43%. See every state in the mortgage calculator by state.

When these numbers don't fit your home

  • The 0.69% is a statewide figure. Your county, city, school district and any homestead or senior exemption set your real bill, which can be well above or below it. Check the county assessor or the listing's tax history.
  • It's a ratio of two medians (median tax ÷ median value), so it's a guide, not anyone's actual rate.
  • Insurance varies a lot by location and home. $1,800 a year is just a starting assumption; get a quote.
  • Survey figures carry a margin of error, and home values have moved since 2024.

Sources

This is an estimate for planning. Your lender's quote will use your actual rate, tax bill, insurance and fees. It isn't financial advice.

How we checked this

Before every update, this calculator is run in a real browser with these known answers, and it must match all of them:

  • Median MT home $425,400, 20% down, 6.5%, 30 years, 0.69% tax: $2,545.66 a month ✓
  • $300,000 with 10% down at 7% adds PMI: $2,231.32 a month ✓

Last checked October 26, 2026. Spotted something wrong? The math is done in your browser with the formula shown on this page, so you can check any result by hand.

Questions people ask

How much is property tax on a $450,000 house in Montana?

At Montana's average effective rate of 0.69%, about $3,105 a year, or $258.75 a month. Your county's actual rate may differ.

What is the monthly payment on a $425,400 home in Montana?

With 20% down and an example 6.5% rate for 30 years, principal and interest is $2,151.05. Adding 0.69% property tax and $1,800 a year of insurance brings it to about $2,545.66 a month.

Are property taxes high in Montana?

Montana's effective rate of 0.69% ranks 19th lowest of the 50 states and DC, 22% lower than the US figure of 0.89%, based on Census ACS 2024 figures.

What income do I need to buy the median home in Montana?

Under the 28% housing guideline, a $2,545.66 monthly payment needs about $109,100 a year of gross income, with no other big debts. Try your own numbers in the home affordability calculator.

Related calculators