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What this Idaho mortgage calculator does
Home prices in the Treasure Valley and North Idaho rose faster than incomes in recent years, so getting the monthly cost right matters. This calculator starts from an Idaho-based property tax estimate for owner-occupied homes and lets you adjust the loan, insurance, HOA and PMI. It returns your total payment, the split between loan and escrow items, and the effect of any extra payments.
How it works
Enter the price, down payment, rate and term. The tax field starts at 0.55%, which is the planning rate for a primary residence after the homeowner's exemption is taken into account. If you are buying an investment property or a second home, raise the tax rate, since those homes do not get the exemption. Tax is divided by twelve and shown next to insurance and your loan payment. Share your scenario with the copy-link button.
How the exemption affects the bill
Idaho takes the smaller of 50% of your home's value and $125,000 off the taxable value before applying the levy. On any home worth $250,000 or more, the full $125,000 applies, so the savings equal $125,000 times your local levy rate. Because the cap is fixed, its share of the bill shrinks as prices rise.
Worked example: $450,000 home, 20% down, 6.5%
The $360,000 loan has principal and interest of $2,275.44. At the 0.55% default, tax is $2,475 a year, or $206.25 a month. With a $150 monthly insurance placeholder, the payment is $2,631.69.
If the exemption were missed and your levy were around 0.63% on the whole value, the bill could be several hundred dollars higher, so file as soon as you take possession. Deadlines vary by county.
Buying in Idaho: what to check
File the exemption early
The exemption does not apply itself. Contact your county assessor after closing and confirm the deadline. Your escrow account may be set up on the higher, non-exempt bill until you file.
Look at assistance and loan types
Idaho Housing and Finance Association programs can add a second mortgage for the down payment. Compare a conventional loan with the FHA loan calculator, and if you are eligible, the VA or USDA loan in a rural county. To see how much a bigger down payment matters, try the points calculator or payoff calculator once you have a base payment.
Insurance and land
Ask about wildfire coverage on foothill and rural properties, and about the age and condition of the roof in snow country. If you are buying a manufactured home on land, the manufactured home calculator compares financing paths.
Estimate only. Tax rates, exemptions and program rules change. Confirm with your county assessor and lender.
Frequently asked questions
How does the Idaho homeowner's exemption work?
It removes 50% of the value of your primary residence and up to one acre of land from property tax, capped at $125,000 of value. You have to apply through your county assessor, and it applies only to the home you live in. It does not apply to rentals or second homes.
How much does the exemption save?
At an effective tax rate of about 0.63%, a $125,000 exemption is worth roughly $788 a year. Because the exemption is capped, it matters more to owners of modest homes than to owners of very expensive ones, where the cap is a smaller share of value.
What are typical property taxes in Idaho?
Effective rates for owner-occupied homes generally fall between about 0.4% and 0.6% of value, depending on the county and on how the exemption is counted in the source. The calculator starts at 0.55%. In fast-growing markets around Boise, homes priced from $400,000 to $550,000 commonly pay roughly $2,000 to $3,500 a year.
What is the Idaho property tax reduction program?
It is a benefit sometimes called the circuit breaker for low-income seniors, disabled people and certain others. It is applied for between January 1 and April 15, and the reduction depends on income. Check the eligibility rules each year.
Does Idaho offer help for first-time buyers?
The Idaho Housing and Finance Association offers down payment and closing cost assistance with its loan programs, usually as a repayable second mortgage. Income limits, rates and terms change, so check the agency's current program page.
Is wildfire risk a factor in Idaho insurance?
It can be. Homes in foothill, forest and rural-edge areas may face higher premiums or coverage limits. Ask insurers about wildfire policies before you finalize your budget, and update the insurance field.