Not financial advice. Mortgage FV Calculator is a software calculator, not a personal-finance product or advisory service. It computes standard financial functions and displays the results for your convenience. Nothing here constitutes, or is intended to constitute, financial, investment, tax, legal, mortgage, credit, or insurance advice. Always consult a qualified professional before making any financial decision.
Great Falls mortgage calculator
A median-priced Great Falls, MT home at 6.75% over 30 years, with Montana property tax of 0.74% and $2,300 a year of homeowners insurance. Every figure below is computed on our amortising engine — nothing is estimated in the browser.
$2,451 a month, all in
Principal and interest are $1,920; escrow and PMI add the rest. Over the full term the loan costs $395,280 in interest. Discounted at 5%, buying here has a net present value of $-11,683 ($173,698 in today’s dollars).
Within Montana, Great Falls is the cheapest of the 4 Montana markets covered here — Bozeman runs about 2.57x these prices. Buyers priced out of the expensive end of the state often end up comparing exactly this pair.
Great Falls is cheaper than Montana as a whole — $329,000 against a state median of $470,000, roughly 30% below. On a 20% deposit that is $28,200 less to find up front.
The price-to-rent ratio here is 21.4 ($329,000 to buy, $1,280 a month to rent), which is high. Renting and investing the deposit is a genuine alternative in Great Falls, not a fallback position.
Monthly cost in Great Falls vs comparable rent
Owning is stacked by component; renting is the local median asking rent.
The monthly breakdown
| Median home price | $329,000 |
|---|---|
| Down payment (10%) | $32,900 |
| Loan amount | $296,100 |
| Principal & interest | $1,920/mo |
| Property tax (0.74%) | $203/mo |
| Homeowners insurance | $192/mo |
| PMI while above 80% LTV | $136/mo |
| Total monthly payment | $2,451/mo |
| Comparable rent | $1,280/mo |
What a rate move does to the Great Falls payment
| Rate | Principal & interest |
|---|---|
| 5.5% | $1,681/mo |
| 6% | $1,775/mo |
| 6.5% | $1,872/mo |
| 7% | $1,970/mo |
| 7.5% | $2,070/mo |
| 8% | $2,173/mo |
Rent or buy in Great Falls?
Against $1,280 a month in rent, over 7 years renting leaves you about $79,738 better off — $67,081 once 2.5% inflation is stripped out. See the Montana rent-vs-buy page.
Where these numbers come from
Montana medians come from editorial and are refreshed weekly. The Great Falls figures index those state medians to the local market, so they track the same feed rather than going stale. Insurance and the state income tax rate are editorial. Treat everything here as a planning estimate, not a quote.