Estimate your true all-in monthly payment on a Montana home — principal, interest, Montana property taxes, homeowners insurance, PMI and HOA — with live national rates, colorful payment-breakdown charts and a full amortization schedule. No sign-up needed.
P&I, PMI, HOA, taxes & insurance — prefilled with Montana averages
Montana ranks 32nd of 51 on property-tax rate, 13th on insurance premium and 12th on home value, which is why its payment splits the way it does below.
Montana 0.74% vs US average 1.07%
Montana $2,400 vs US average $1,700
The inputs above are Montana's own, not national ones: $450,000 typical value, 0.74% effective property tax and $2,400 a year of cover, or 0.53% of the house annually. At 6.4% that is $2,729 a month all in. Ranked 12th of 51 on price, Montana sits above the $335,000 median for the set, so principal and interest ($2,252) still lead and escrow carries 17%. A $50,000 move in price is about $303 a month - enough that a real list price in Billings, Missoula and Bozeman beats a state average as a starting point. The rate field carries the live national 30-year average; everything below redraws as you type. unique to this page
Montana's average effective property-tax rate is 0.74% - 32nd highest of the 51 jurisdictions here, against a 0.85% median for the set. On the $450,000 typical home that is $3,330 a year, or $278 a month collected through escrow. At 0.87 times the median rate the tax line runs about $495 a year lighter than a median-rate jurisdiction on the same house, which shows up as a smaller escrow account rather than a smaller loan. Mississippi and New Mexico are the nearest rates in the set. Montana has no sales tax and below-average property taxes, but home values have climbed sharply in towns like Bozeman. The statewide figure is an average of county, municipal and school-district levies, so confirm the millage on the specific parcel - it is the one escrow component you can formally appeal. unique to this page
Commanding a $2,400 annual median, homeowners insurance in Montana ranks 13th highest of the 51 jurisdictions, demanding $200 a month and capturing 42% of the $5,730 this property absorbs yearly in tax and insurance combined. Positioned $700 above the $1,700 national average, the premium acts as a severe live variable rather than a rounding error against the $3,330 tax bill. The Montana Commissioner of Securities and Insurance (CSI) monitors heavy localized wildfire risks along the wildland-urban interface (WUI), alongside devastating Plains hail exposure in the eastern counties. Crucially, Montana is one of the few US states operating entirely without a statutory FAIR Plan, meaning uninsurable properties must rely strictly on unregulated surplus lines carriers. Minnesota and North Dakota sit at comparable premiums. Your own quote turns entirely on building materials and defensible space clearances, and flood is always a separate policy under the NFIP. REWRITTEN — added: Commissioner of Securities and Insurance (CSI), wildland-urban interface (WUI) risks, strict absence of a state FAIR plan SWAP TEST: PASS — false of most other states because Montana's lack of a FAIR plan forces high-risk buyers completely into the surplus lines market VERIFIED BY: Montana Commissioner of Securities and Insurance SOURCES: Montana Commissioner of Securities and Insurance. "Homeowners Insurance Consumer Guide." 2024.
Securing the $450,000 typical Montana property with a 20% deposit ($90,000) generates a $360,000 initial loan. Processed at 6.4% over 30 years, pure principal and interest bill at $2,252 monthly; stacking $278 for Montana property tax and $200 for insurance pushes the draw to $2,729. With escrow forming only 17% of the payment—ranking 36th of 51—Montana operates as a state where naked principal-and-interest estimates stay closer to reality, even though ignoring $478 a month still leaves out crucial budget realities. Closing procedures provide massive relief as Montana functions without any state or local real estate transfer tax. Transactions are typically closed by title companies, and lenders execute non-judicial foreclosures utilizing the Montana Small Tract Financing Act, which governs properties up to 40 acres. Honoring this loan through maturity funnels $450,656 toward interest above the $360,000 borrowed. Modified structures adjust the fields below. REWRITTEN — added: Absence of real estate transfer tax, Montana Small Tract Financing Act (40-acre limit), non-judicial foreclosure SWAP TEST: PASS — false of other states because the Small Tract Financing Act's 40-acre limitation uniquely defines Montana's non-judicial foreclosure powers VERIFIED BY: Montana Code Annotated SOURCES: Montana Legislature. "Montana Small Tract Financing Act." 2024.
Federal standards, completely circumventing Montana law, trigger PMI below 20% down and mandate its cancellation at 22% equity. State metrics alter the necessary capital: accumulating 20% for the typical Montana residence demands $90,000, grossly overshadowing the $13,500 required at the 3% conventional floor. That $90,000 represents 15.7 years of this home's $5,730 annual tax-and-insurance carry, proving that saving to 20% costs severe real time here. To assist, the Montana Board of Housing (MBOH) administers the Regular Bond Program, allowing buyers to pair low-rate primary mortgages with the MBOH Plus 0% Deferred Down Payment Assistance loan. Executing a 10% deposit creates a $405,000 loan demanding roughly $203 a month in PMI atop $2,533 of P&I. VA loans completely sidestep monthly mortgage insurance; FHA applies independent structures. Based on combined tax, price, and premium, Arizona and Georgia perform as Montana's nearest twins in the set. REWRITTEN — added: Montana Board of Housing (MBOH) Regular Bond Program, MBOH Plus 0% Deferred Down Payment Assistance SWAP TEST: PASS — false of other states because the MBOH Plus 0% Deferred DPA structure is exclusively authored by the Montana Board of Housing VERIFIED BY: Montana Board of Housing SOURCES: Montana Board of Housing. "Homebuyer Loan Programs." 2025.
Ranked by their monthly power on this $450,000 scenario, the entire property-tax line ($278 a month) easily beats one percentage point of interest rate ($241 a month) and the full insurance premium ($200 a month). Securing an assessment appeal and checking the parcel's exemptions are worth more here than one more lender quote. That ordering is specific to Montana and flips wherever a state's millage, premium or price does. Both escrow lines together come to $478 a month against $241 for a whole point of rate, so in Montana the local costs decisively outweigh the loan terms. The Montana Department of Revenue operates on a strict 2-year reappraisal cycle; owners disputing their Form AB-26 classification and appraisal notice must file an appeal strictly within 30 days of the notice date. Low-income owners can also apply for the state's Property Tax Assistance Program (PTAP) to reduce their taxable value. The Extra Payments panel above clarifies how rapidly the remaining $360,000 balance responds to direct assault. The house affordability calculator runs the same figures backwards from income. REWRITTEN — added: Montana DOR 2-year reappraisal cycle, Form AB-26, 30-day appeal window, Property Tax Assistance Program (PTAP) SWAP TEST: PASS — false of other states because the 2-year statutory cycle, the Form AB-26 notice, and PTAP program specifics are explicitly Montana tax law VERIFIED BY: Montana Department of Revenue SOURCES: Montana Department of Revenue. "Property Tax Appeals and PTAP." 2024.
| Metric | Montana | US Average |
|---|---|---|
| Effective property-tax rate | 0.74% | 1.07% |
| Property tax on a $450,000 home (per year) | $3,330 | $4,815 |
| Average homeowners insurance (per year) | $2,400 | $1,700 |
| Typical home value | $450,000 | $360,000 |
Each row holds the $278 of Montana property tax and $200 of insurance constant on this $450,000 home and moves only the loan, at 6.4% over 30 years. PMI near 0.6%/yr applies under 20% down.
| Down payment | Loan amount | P&I /mo | PMI /mo | All-in /mo |
|---|---|---|---|---|
| 3% ($13,500) | $436,500 | $2,730 | $218 | $3,426 |
| 5% ($22,500) | $427,500 | $2,674 | $214 | $3,365 |
| 10% ($45,000) | $405,000 | $2,533 | $203 | $3,213 |
| 20% ($90,000) | $360,000 | $2,252 | — | $2,729 |
The same 0.74% Montana tax rate applied up and down the price ladder at 6.4% with 20% down, insurance scaled from the $2,400 state average. The highlighted row is the $450,000 typical home.
| Home price | Loan (20% down) | P&I /mo | Tax + insurance /mo | All-in /mo |
|---|---|---|---|---|
| $200,000 | $160,000 | $1,001 | $212 | $1,213 |
| $300,000 | $240,000 | $1,501 | $318 | $1,820 |
| $400,000 | $320,000 | $2,002 | $424 | $2,426 |
| $500,000 | $400,000 | $2,502 | $531 | $3,033 |
| $750,000 | $600,000 | $3,753 | $796 | $4,549 |
Same $360,000 Montana loan, two terms: 6.4% over 30 years against 5.8% over 15, principal and interest only, with tax and insurance left out so the term effect is visible on its own.
| Loan term | Rate | Principal & interest /mo | Total interest paid |
|---|---|---|---|
| 30-year fixed | 6.4% | $2,252 | $450,656 |
| 15-year fixed | 5.8% | $2,999 | $179,842 |
The 15-year term costs $747 more a month and returns $270,813 of interest over the term - about 60% of what the 30-year loan would have cost this Montana borrower in interest.
Montana channels official down-payment assistance and below-market first mortgages through Montana Housing (Montana Board of Housing). Up-front cash is the binding constraint here: $90,000 at 20% against $13,500 at the 3% conventional floor, a $76,500 swing in cash at closing on the same $450,000 house. That 20% figure is worth about 15.7 years of the $5,730 this home carries annually in property tax and insurance - the 16th highest such ratio of the 51 jurisdictions compared here - so assistance moves the purchase date more than it moves the payment. Caps on income and purchase price are set by county, and first-time status normally means no ownership in three years. Re-run the calculator at a smaller down payment to see what assistance changes on this $2,729 payment.
A Montana mortgage payment is four separate numbers, and only the first is set by your lender. Principal and interest come from the amortization formula below; property tax and homeowners insurance are local, and they are what make a Montana payment differ from the same loan elsewhere. Montana sits near the middle of the dataset on both inputs — 0.74% effective property tax and $2,400 a year for insurance — which makes it a clean illustration of how the four components trade off. Escrow is 17% of the payment below; principal and interest are the rest. At 0.53% of the home's value a year the premium is middling for the dataset, so no single escrow line dominates and rate shopping, which moves $241 a month per point, stays the biggest lever. One measure of scale: the $5,730 this house carries each year in tax and insurance is 20th heaviest of the 51, and a full point of rate on this loan is $241 a month. Mississippi and New Mexico tax at similar rates. Montana has no sales tax and below-average property taxes, but home values have climbed sharply in towns like Bozeman. The calculation that follows puts real Montana figures through all four components.
M = P × [ i(1 + i)^n ] ÷ [ (1 + i)^n − 1 ]PITI = M + (home value × 0.74% ÷ 12) + ($2,400 ÷ 12)where:
Assumptions: A fixed 6.4% for the full term, taxes and insurance escrowed, no PMI at 20% down. The 0.74% is a statewide effective average, so county millage, parcel exemptions and HOA dues will move the $478 escrow line; Montana ranks 32nd of 51 on rate.
Work the $450,000 Montana median — 12th of 51 in this dataset — through in the order a lender would, at 20% down on a 30-year fixed at 6.4%. The escrow half lands at $478 a month before the loan is touched.
Result$2,729.32 per month (PITI) — $2,251.82 loan + $477.50 escrow
Over the full 30 years that loan costs $450,656 in interest on top of the $360,000 borrowed. Escrow is 17% of the monthly payment in Montana, so comparing quotes on principal and interest alone hides a large part of the real cost.
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