Mortgage Calculator for Montana
Estimate your monthly payment in Montana using adjustable example inputs and official housing resources.
Enter Your Loan Details
Defaults are illustrative inputs, not local averages. Replace taxes, insurance and rate with property-specific estimates.
Planning a purchase in Montana
The prefilled price, tax percentage, and interest rate are illustrative inputs, not verified Montana averages or lender quotes. Replace them with the property's price, a local tax estimate, an insurance quote, and your lender's rate.
The reduced homestead rate requires the right enrollment year
Montana's reduced homestead rate is a property-tax classification for a qualifying principal residence. The Department of Revenue distinguishes enrollment for the 2027 tax year from the closed 2026 application period and provides rules for ownership and occupancy changes.
For your estimate: Use the current enrollment guidance to verify the parcel's status for your budget year. Do not assume a seller's rebate or prior enrollment automatically determines your own tax estimate.
Montana Revenue: reduced homestead rate questionsBond Advantage and MBOH Plus repay differently
Montana Housing distinguishes amortizing Bond Advantage assistance from the MBOH Plus deferred-payment option. These assistance products require eligibility for the agency's Regular Bond first-mortgage program.
For your estimate: Compare the current first-mortgage rates alongside the monthly or deferred assistance obligations. Add an amortizing second-loan payment outside the result displayed here.
Montana Commerce: down-payment assistanceLocal guidance reviewed . Confirm eligibility, funding and property-specific costs directly before making a decision.
Using local estimates in this tool
The tax field multiplies the home's price by a percentage. If your assessor estimates an annual tax bill, divide that bill by the entered home price and multiply by 100. Do not enter an assessment ratio or millage directly. For example, an illustrative $4,800 annual bill on a $400,000 price corresponds to 1.2%; these are not local averages.
This payment includes principal, interest, property tax and home insurance. Budget mortgage insurance, HOA dues, maintenance and closing costs separately.
Official resources and next steps
HUD housing and homeownership resources for Montana provides further counseling and housing contacts.
For FHA financing, use HUD's county and unit-count lookup. Select Montana, the property's county, the calendar year, and the number of units. The 2026 national one-unit floor of $541,287 is a baseline, not a determination of the limit for every county in Montana.
HUD directory reviewed 2026-09-25. HUD state directory. Local figures are not represented as verified statistics.
Amortization Schedule
| Year | Principal Paid | Interest Paid | Tax Paid | Insurance Paid | Balance |
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How to Use This Mortgage Calculator in Montana
Enter the price of the property you are considering in Montana, then adjust the down payment and rate. The payment combines principal, interest, property tax, and insurance. It does not include HOA dues, maintenance, or mortgage insurance.
For example, at the illustrative price of $447,000 and 6% down, the base loan is $420,180. These are calculation examples, not a statement about prices or typical buyers in Montana.
Compare the same home under different rates and down payments. A lower monthly payment from a longer term can still mean more lifetime interest. Confirm taxes and insurance for the property before relying on the estimate.