Idaho mortgage calculator

Use our free mortgage calculator to estimate your monthly mortgage payment, your principal and interest, taxes, insurance, and PMI in Idaho. See how your monthly payment changes by making updates to your home price, down payment, interest rate, and loan term.

Idaho housing market

In Idaho, the Gem State, housing is roughly as affordable as the national average. ...Idahoans spend ~21% of their incomes on homes, which is slightly more than the national average. Average home prices roughly track U.S. averages as well as the state-wide level. You might think you'd get more house in Idaho, which is the 7th least densely populated state in the U.S., however price/square foot is also close to the national average. Idaho is benefiting meaningfully from the growth of Boise, the fastest-growing metro area in the U.S. according to Forbes.

Your monthly payment
30 year fixed loan term
Monthly payment
Principal & interest


Property taxes

Homeowners insurance

Homeowners association (HOA) fees

Compare common loan types
Total principal: $240,000
Loan Term
30 year fixedYour input
15 year fixed30 year fixed
Monthly Payment$1,599$2,001$1,445
Mortgage Rate4.125%2.189%*2.98%*
Total interest paid
Loan Term
30 year fixedYour input
15 year fixed30 year fixed
Monthly Payment$1,599$2,001$1,445
Mortgage Rate4.125%2.189%*2.98%*
Total interest paid

See how your payments change over time for your 30 year fixed loan term

At year 0

30 year fixed loan term

Principal Paid
Interest Paid
Year 0
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We’ll share an interesting insight here for key milestones in your payoff schedule.

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Get personalized mortgage rates from San Francisco, CA.
Principal & interest


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Idaho mortgage and refinance rates today (APR)

ProductInterest rateAPR
30-year fixed-rate2.947%3.002%
20-year fixed-rate2.649%2.730%
15-year fixed-rate2.101%2.198%
10-year fixed-rate2.075%2.216%
7/1 ARM2.427%3.080%
5/1 ARM2.429%3.199%
30-year fixed-rate FHA2.605%3.326%
30-year fixed-rate VA2.646%2.905%

Data source: ©Zillow, Inc. 2006 – 2021. Use is subject to the Terms of Use

Today's rate

30-year fixed

Today’s mortgage rates in Idaho are 3.002% for a 30-year fixed, 2.198% for a 15-year fixed, and 3.199% for a 5/1 adjustable-rate mortgage (ARM).

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First-time home buyer programs in Idaho

There are several national first-time home buyer programs that may be able to help you get into a home in Idaho.

Conventional mortgage

National program

What you need to know

Best for home buyers with good credit looking for low down payments or limited mortgage insurance premiums. A conventional mortgage is a home loan that isn’t guaranteed or insured by the federal government. Conventional mortgages that conform to the requirements set forth by Fannie Mae and Freddie...

See full article

Average property tax in Idaho counties

Taking U.S. Census data, NerdWallet has crunched the numbers to help you understand what property tax rate you can expect to pay on your future home in Idaho. Because assessed values aren’t frequently updated, you may pay a higher rate at first but eventually you’ll pay a similar rate.

Avg. property tax rate
Avg. home value
Ada County0.85%$256,400
Adams County0.55%$166,500
Bannock County0.95%$156,900
Bear Lake County0.58%$142,100
Benewah County0.66%$150,800
Bingham County0.64%$147,400
Blaine County0.53%$390,300
Boise County0.63%$185,100
Bonner County0.57%$222,700
Bonneville County0.78%$170,900
Boundary County0.5%$181,300
Butte County0.53%$110,700
Camas County0.62%$173,300
Canyon County0.88%$177,300
Caribou County0.71%$130,600
Cassia County0.49%$136,900
Clark County0.48%$98,700
Clearwater County0.55%$134,400
Custer County0.28%$173,300
Elmore County0.73%$145,200
Franklin County0.62%$168,200
Fremont County0.69%$157,700
Gem County0.66%$148,800
Gooding County0.57%$134,400
Idaho County0.4%$164,600
Jefferson County0.67%$166,200
Jerome County0.71%$144,400
Kootenai County0.69%$263,500
Latah County0.91%$207,200
Lemhi County0.51%$173,400
Lewis County0.82%$120,000
Lincoln County0.62%$127,200
Madison County0.75%$190,500
Minidoka County0.59%$121,800
Nez Perce County0.82%$172,500
Oneida County0.57%$151,600
Owyhee County0.57%$125,700
Payette County0.67%$138,900
Power County0.86%$132,600
Shoshone County0.73%$117,500
Teton County0.51%$291,600
Twin Falls County0.83%$162,300
Valley County0.55%$258,000
Washington County0.71%$149,100

Source: American Communities Survey 2016, U.S. Census

Under "Home price," enter the price (if you're buying) or the current value (if you're refinancing). NerdWallet also has a .

Under "Down payment," enter the amount of your down payment (if you’re buying) or the amount of equity you have (if refinancing). A  is the cash you pay upfront for a home, and  is the value of the home, minus what you owe.

On desktop, under "Interest rate" (to the right), enter the rate. Under "Loan term," click the plus and minus signs to adjust the length of the mortgage in years.

On mobile devices, tap "Refine Results" to find the field to enter the rate and use the plus and minus signs to select the "Loan term."

You may enter your own figures for  and , if you don’t wish to use NerdWallet’s estimates. Edit these figures by clicking on the amount currently displayed.

The mortgage calculator lets you click "Compare common loan types" to view a comparison of different loan terms. Click "Amortization" to see how the principal balance, principal paid (equity) and total interest paid change year by year. On mobile devices, scroll down to see "Amortization."

» MORE: 

The mortgage payment calculation looks like this: M = P [ i(1 + i)^n ] / [ (1 + i)^n – 1]

The variables are as follows:

Determining what your monthly house payment will be is an important part of figuring out how much house you can afford. That monthly payment is likely to be the biggest part of your cost of living.

Using NerdWallet’s mortgage calculator lets you estimate your mortgage payment when you buy a home or refinance. You can change loan details in the calculator to run scenarios. The calculator can help you decide:

Mortgage lenders are required to assess your ability to repay the amount you want to borrow. A lot of factors go into that assessment, and the main one is debt-to-income ratio.

Your  is the percentage of pretax income that goes toward monthly debt payments, including the mortgage, car payments, student loans, minimum credit card payments and child support. Lenders look most favorably on debt-to-income ratios of 36% or less — or a maximum of $1,800 a month on an income of $5,000 a month before taxes.

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If your mortgage payment included just principal and interest, you could use a bare-bones mortgage calculator. But most mortgage payments include other charges as well. Here are the key components of the monthly mortgage payment:

Typically, when you belong to a homeowners association, the dues are billed directly, and it's not added to the monthly mortgage payment. Because HOA dues can be easy to forget, they're included in NerdWallet's mortgage calculator.

The mortgage calculator lets you test scenarios to see how you can reduce the monthly payments:

Your monthly payment can go up over time if: