Estimate your monthly mortgage payment in Idaho — principal & interest plus Idaho property tax and homeowner’s insurance.
Buying a home in Idaho: what to know
Idaho’s typical home value of $478,744 (Zillow ZHVI, August 2026) sits above the national average, driven by Boise and resort markets, but the effective property tax rate of just 0.50% (Tax Foundation 2026) is among the lowest in the West. A homeowner’s exemption shields up to $125,000 of assessed value from taxation, cutting real bills further. Insurance averages only about $1,002 a year (NAIC 2022), near the cheapest in the nation. The Idaho Housing and Finance Association (IHFA) offers down payment assistance of up to 8% of the purchase price, plus the Idaho Heroes program for teachers, nurses, and first responders.
Idaho mortgage facts
| Fact | Figure |
|---|---|
| 2026 conforming loan limit (1-unit) | $832,750Idaho’s 2026 baseline is $832,750 for a one-unit home. Teton County is the state’s only high-cost county in 2026, with a conforming limit of $1,249,125. |
| Median home price | $478,744 |
| Median effective property tax rate | 0.5% |
| Average homeowner’s insurance | $1,002/year |
Data as of October 2026. Sources: FHFA 2026 conforming limits (Nov 2025 announcement; Teton County confirmed via FHFA-derived county tables); Zillow ZHVI Aug 2026 (via Magic Valley Times county series); Tax Foundation 2026 Idaho Tax Rates & Rankings (Facts & Figures 2026); NAIC 2022 HO-3 premiums via Insurance Information Institute (May 2025); Idaho Housing program materials.; rate: 7.40% (Freddie Mac PMMS, week ending October 15, 2026)
Idaho first-time buyer programs
- Idaho Housing Down Payment Assistance — Up to 8% of the home’s sales price toward down payment and closing costs as a 15-year repayable second mortgage (first-mortgage rate plus 2%). Buyers may contribute as little as $500 of their own funds; Finally Home! education required. Official site
- Idaho Heroes Loan — Same 8% down payment assistance structure for teachers, nurses, firefighters, EMTs, law enforcement, veterans, and other community heroes, with the $500 minimum borrower contribution waived. Official site
How to use this calculator
This calculator comes pre-filled with Idaho’s $478,744 typical home value, the 0.50% effective property tax rate, and $1,002 per year for homeowner’s insurance. Idaho’s 2026 conforming limit is $832,750, except in Teton County where the high-cost limit is $1,249,125, so the calculator flags loans above the applicable limit as jumbo. Because the homeowner’s exemption reduces taxable value, your actual tax bill may come in below the estimate, so treat the tax line as a starting point and confirm with the county assessor.
Worked example: a median Idaho home
Take a median-priced Idaho home at $478,744. With 20% down ($95,748.80), the loan amount is $382,995.20. At 7.40% (Freddie Mac PMMS, week ending October 15, 2026) on a 30-year fixed term, principal and interest come to $2,651.78/month. Add property tax of about $199.48/month (0.5% of $478,744, divided by 12) and insurance of about $83.50/month ($1,002 a year), for a total estimated payment of $2,934.76/month. Over 30 years, total interest would be about $571,646.10. Your rate, down payment, and county tax bill will move these numbers — use the calculator above with your own figures.
What is the 2026 conforming loan limit in Idaho?
Idaho’s 2026 baseline is $832,750 for a one-unit home. Teton County is the state’s only designated high-cost county in 2026, with a conforming limit of $1,249,125.
How much are property taxes in Idaho?
Idaho’s median effective property tax rate is about 0.50% (Tax Foundation 2026). The homeowner’s exemption removes up to 50% of assessed value (capped at $125,000) from taxation for primary residences, but you must claim it, with filing due by the last business day of the year.
What first-time homebuyer programs does Idaho offer?
Idaho Housing (IHFA) provides down payment assistance up to 8% of the sales price as a repayable second mortgage, and the Idaho Heroes Loan offers the same 8% to teachers, nurses, first responders, and veterans with no minimum borrower contribution. Most IHFA programs require the Finally Home! homebuyer education course.
How much does homeowner’s insurance cost in Idaho?
The average HO-3 premium was about $1,002 a year in 2022 (NAIC via III), among the lowest in the country. Homes in wildfire-interface areas around Boise, Coeur d’Alene, and Sun Valley can cost more to insure.
Why do Idaho home prices vary so much by county?
Teton County (Jackson Hole spillover) and Blaine County (Sun Valley) have typical values several times the state median, while rural counties run far below it. Always set the calculator’s price to your county’s comps rather than the $478,744 statewide figure.