Calculate your property tax for ID. Enter your home value, apply exemptions, and see your estimated annual tax.
Idaho's effective property tax rates are moderate-to-low, commonly 0.5% to 0.9% of market value. Property is assessed at market value, but the taxable value is reached through a state-set homeowner's exemption and the percentage of market value applied differs by type (the 'ratio' applied to market value). Idaho offers a homeowner's exemption (the first portion of value), a circuit breaker for seniors/disabled, and a veterans' exemption. This guide explains the calculation and relief; the calculator below estimates your bill.
Idaho values property at market value, then applies the homeowner's exemption (which removes the first $125,000 of a primary residence's value, or 50% of value if that is less — a generous break) before the rate is applied. The taxable value is then multiplied by the combined rate (dollars per $1,000) of the county, city, school, and other districts. The homeowner's exemption is the single biggest factor keeping Idaho bills low for owner-occupants.
Idaho's Homeowner's Exemption excludes the greater of $125,000 or 50% of market value (whichever is less) from taxation on a primary residence — a very large exemption relative to home values. It is claimed once with the county and stays while you occupy the home. For most homeowners this removes a substantial share of the taxable base, so the bill is based on only the value above the exemption.
Idaho's Property Tax Reduction Program (circuit breaker) refunds part of the tax for owners 65+, disabled, or widows/widowers with household income under a limit (about $32,000–$37,000 recently, adjusted) whose tax exceeds a set percentage of income. It is claimed through the county and scales with burden. There is also a circuit-breaker for veterans with service-connected disabilities.
Idaho grants a veterans' exemption (a set dollar reduction, larger for service-connected disability), a disabled veterans' exemption (a larger or full exemption for 100% disability), and exemptions for surviving spouses. These are claimed with the county assessor and are the largest reliefs for eligible owners.
Idaho has no Prop 13-style cap; values are kept at market through periodic revaluation (commonly every 5–6 years with annual adjustments). The homeowner's exemption is the main cushion, not a growth cap. Counties and districts set rates within statutory limits.
The figures below draw on our county datasets where available; rates differ by jurisdiction, so use your specific locality's rate in the calculator.
Estimates apply each county's effective rate to a $450,000 market value for comparison only; your actual bill depends on your own assessed value, exemptions, and local levies.
Idaho bills are usually paid annually or in two installments set by the county, with interest on delinquency and a possible tax-deed sale after sustained nonpayment. The generous homeowner's exemption is applied by the county once claimed; the circuit-breaker (Property Tax Reduction) is claimed through the county and paid as a refund. Because the exemption removes most of the base, the bill on a primary residence is small.
To lower your Idaho bill: (1) claim the Homeowner's Exemption (the greater of $125,000 or 50% of market value) on your primary residence — the single biggest break; (2) apply for the Property Tax Reduction (circuit breaker) through the county if 65+/disabled with income under the limit; (3) claim the veterans' exemption for service-connected disability; (4) grieve by the fourth Monday in June if comparable sales are lower; (5) follow county and school district rate votes. The homeowner's exemption alone removes most of the taxable base.
In practice, an Idaho bill is the market value minus the homeowner's exemption (the greater of $125,000 or 50% of value) times the combined rate of county, city, school, and other districts. The homeowner's exemption is so large that most owner-occupants are taxed on only part of their value. The property tax reduction program is reconciled through the county. Because the exemption removes most of the base, an appeal usually challenges the market value above the exemption.
If you are buying in Idaho, the key step is claiming the homeowner's exemption (the greater of $125,000 or 50% of value) right after closing — it removes most of your base. Check property tax reduction program eligibility if 65+/disabled. Compare combined rates across counties (Ada vs. others differ). Grieve the market value if it looks high; because the exemption already removes most of the base, focus the appeal on the value above the exemption. The exemption makes Idaho one of the lower-burden states for owners.
To appeal in Idaho, file by the fourth Monday in June. (1) Compare the market value (above the homeowner's exemption) to recent sales. (2) File with the county board of equalization. (3) Appeal to the state Board of Tax Appeals if needed. (4) Confirm the homeowner's exemption is claimed. Because the exemption removes most of the base, the appeal targets the value above it.
Idaho's debate focuses on the homeowner's exemption (the $125,000 / 50% break) and the property tax reduction program; proposals periodically adjust the income limit or the exemption. Because the exemption is so large, it is the dominant relief lever. Watch the Legislature for changes to the exemption amount or the reduction-program income limit, since both directly affect owner-occupants.
Homeowner's exemption — the greater of $125,000 or 50% of value removed. Property tax reduction program — the senior/disabled circuit breaker. Veterans' exemption — a set-dollar removal. Board of equalization — the local appeal body (fourth Monday in June). Market value — the 100% basis before the exemption.
Two $450,000 homes. Homeowner A: the homeowner's exemption removes the greater of $125,000 or 50% ($225,000), leaving $225,000 taxable; at a 0.7% effective rate the bill is about $1,575. Homeowner B, a 65-year-old under the reduction-program limit, claims the exemption and the program, potentially cutting the net further. The example shows the homeowner's exemption is the dominant relief.
Idaho homeowners with a mortgage pay via escrow; the lender remits the installments. The homeowner's exemption removes most of the base, so the escrow is small — but a rate change still flows through. Claim the exemption right after closing and tell the lender so the escrow is set on the reduced base. Buyers should verify the exemption is filed, because without it the escrow is set much higher.
What is Idaho's homeowner's exemption? It excludes the greater of $125,000 or 50% of a primary residence's market value (whichever is less) from taxation — a very large break for owner-occupants.
What is Idaho's property tax reduction program? A circuit-breaker refund for owners 65+, disabled, or widows/widowers with income under a limit whose tax exceeds a set share of income, claimed through the county.
Is there a veterans' exemption in Idaho? Yes. A set-dollar veterans' exemption, larger for service-connected disability, plus surviving-spouse exemptions.
Does Idaho have an assessment cap? No statewide cap; values are kept at market through periodic revaluation, and the homeowner's exemption is the main cushion.
How do I appeal my Idaho assessment? File with the county board of equalization by the fourth Monday in June, then to the state Board of Tax Appeals if needed.
Enter your home value, select your state, and see your estimated annual property tax.