Montana Mortgage Calculator

Reviewed by: David Chen, CFA | Montana Real Estate Finance Expert
Last Updated: October 2025

Purchasing a home in Big Sky Country? Our montana mortgage calculator is tailored to estimate your monthly payments, factoring in Montana’s specific property tax rates and the prevalence of USDA rural housing loans in the state.

montana mortgage calculator

Average home prices in MT vary by county.
Enter “0” for VA or USDA loans.
Annual fixed interest rate.
Montana average is approx 0.83%.
Leave blank to calculate payment.
Estimated Monthly Payment
$0.00
Principal, Interest & Tax

montana mortgage calculator Formula

This calculator determines your total monthly housing cost by combining the loan repayment with estimated property taxes, which are significant in Montana funding.

P&I = P [ i(1 + i)^n ] / [ (1 + i)^n – 1 ]
Total = P&I + (Home Value * Tax Rate / 12)
Source: Montana Department of Revenue

Variables

  • P&I: Principal and Interest payment.
  • Tax Rate: The percentage of home value paid annually to the county (avg 0.83%).
  • P: Loan Principal (Home Price – Down Payment).
  • i: Monthly Interest Rate.

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What is a Montana Mortgage Calculator?

A montana mortgage calculator helps residents and newcomers budget for homeownership in the Treasure State. Since Montana has no sales tax, property taxes are a primary funding source for local services, making accurate tax estimation crucial for your monthly budget.

Furthermore, much of Montana is designated as “rural,” making many properties eligible for USDA Rural Development loans which offer 0% down payment options.

How to Calculate Montana Mortgage Payments (Example)

  1. Home Price: $450,000.
  2. Down Payment: 20% ($90,000) for conventional, or $0 for USDA/VA.
  3. Loan Amount: $360,000 (Conventional scenario).
  4. Tax Estimate: 0.83% of $450,000 = ~$3,735/year or $311/mo.
  5. Total: Loan P&I + $311 Tax + Insurance.

Frequently Asked Questions (FAQ)

What is the average property tax rate in Montana?

The average effective property tax rate is around 0.83%, but this varies by county and school district. Missoula and Gallatin counties may have higher assessments.

Does Montana have First-Time Home Buyer programs?

Yes. The Montana Board of Housing (MBOH) offers low-interest mortgages and down payment assistance for eligible first-time buyers.

Can I get a 0% down loan in Montana?

Absolutely. USDA loans are very common in Montana due to its rural nature. VA loans are also available for veterans with 0% down.

Do I need private mortgage insurance (PMI)?

If you put down less than 20% on a conventional loan, yes. FHA loans also require mortgage insurance premiums. VA loans do not require PMI.

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