Property Tax in Idaho (2026): Rates, Exemptions, and Real Numbers

Idaho Property Tax Rates by County

Highest and lowest effective rates within Idaho

Property Tax Calculator — Idaho

Pre-loaded with Idaho's 0.49% effective rate and $432,800 median price

Property Tax by City in Idaho

Annual and monthly property tax by city, based on local median prices and the statewide effective rate

Idaho Homestead Exemption

How Idaho Assesses Property Values

Assessment cycle: Annual assessment by county assessors to 100% of market value.

Property Tax's Impact on Your True Monthly Cost

On a $432,800 home in Idaho

Property tax represents 6% of the true monthly cost in Idaho.

Mortgage Calculator Including Property Tax — Idaho

See your full PITI (principal, interest, taxes, insurance) payment

How Idaho's Property Tax Affects Affordability

$177/month in property tax reduces the home price you can afford. Use the affordability calculator to see the real impact.

Property Tax After Refinancing in Idaho

Refinancing changes your P&I but not your property tax. If your home was reassessed at a higher value, your tax bill increases regardless of your rate.

Frequently Asked Questions

What is the property tax rate in Idaho?

Idaho's effective property tax rate is 0.49%, ranking #43 nationally. The median annual property tax bill is $2,121 ($177/month). Rates range from 0.35% in Custer County to 0.60% in Blaine County (Sun Valley). Source: Tax Foundation Property Taxes by State 2024.

Does Idaho have a homestead exemption?

Yes — Idaho offers a homestead exemption for primary residences. Homeowner's Exemption: 50% of assessed value (up to $175,000 maximum) is exempt from property taxes for owner-occupied primary residences. Circuit breaker program for low-income seniors and disabled persons. Rapid post-pandemic price appreciation has increased taxable values substantially despite the cap.. Apply through your county assessor's office after purchasing your home.

How often is property reassessed in Idaho?

Idaho reassesses property on a annual assessment by county assessors to 100% of market value. basis. When your property is reassessed, your tax bill changes based on the new assessed value multiplied by the applicable rate. If you believe your assessment is too high, you can appeal — most counties allow 30-90 days after receiving your assessment notice.

How is property tax calculated in Idaho?

Property tax = Assessed Value × Mill Rate (or effective rate). In Idaho, the effective rate is 0.49% of market value. On a $432,800 home: $432,800 × 0.49% = $2,121/year. Assessments may use a fraction of market value — the effective rate accounts for this.

Can I appeal my property tax assessment in Idaho?

Yes. If your assessed value is higher than comparable sales in your area, you can file an appeal with your county assessment board. Steps: (1) Get your assessment notice, (2) Research comparable recent sales, (3) File an appeal by the deadline (typically 30-90 days from assessment notice). Studies show 20-40% of appeals result in a reduction. The process is free and you represent yourself — no attorney required.

Are property taxes included in my mortgage payment in Idaho?

Most lenders require an escrow account that collects $177/month ($2,121/year ÷ 12) along with your mortgage payment, then pays the county on your behalf. If your loan-to-value is below 80%, you may be able to opt out of escrow and pay taxes directly. Note: if your assessed value rises, your escrow payment adjusts and your total monthly cost increases.

What Idaho counties have the highest and lowest property taxes?

Idaho's highest effective rate is in Blaine County (Sun Valley) at 0.60%. The lowest is Custer County at 0.35%. That's a 0.25% spread — on a $432,800 home, the difference is $1,082/year.