Property tax in Boundary County, Idaho
The median property tax bill in Boundary County, Idaho is $1,595 a year, which is about 0.39% of the county's median home value of $410,500. That effective rate is lower than the typical Idaho county (0.45%) and lower than the national median (0.81%). These are American Community Survey 5-year estimates (2024); your own bill depends on your home's assessed value and any exemptions.
Estimate the property tax on a home in Boundary County
Enter a home's market value for a ballpark at Boundary County's average effective rate of 0.39% (Census). The real bill depends on the home's assessed value, the millage where it sits and any exemptions.
Estimated property tax: $1,601 / year
Property tax in Boundary County at a glance
| Measure | Value |
|---|---|
| Median annual property tax | $1,595 |
| Median home value | $410,500 |
| Effective tax rate | 0.39% |
| Typical Idaho county rate | 0.45% |
| National median county rate | 0.81% |
Effective rate = median real estate taxes paid divided by median home value. Source: U.S. Census Bureau, American Community Survey 5-year estimates.
How does Boundary County compare in Idaho?
Among Idaho's 44 counties, Boundary County has the 32nd highest effective property-tax rate: 31 rank higher and 12 rank lower. That is on the lower side for Idaho. Nationally, it ranks 2945th of 3135 US counties by effective rate. See every Idaho county ranked.
How much do homeowners in Boundary County actually pay?
The median is only the middle bill. Across Boundary County's 3,799 owner-occupied homes, 13.5% pay $3,000 or more a year in property tax, 36% pay at least $2,000, and 13% pay under $800. Another 6% report paying no property tax at all, which usually means an exemption covers the whole bill.
| Annual bill | Homes | Share |
|---|---|---|
| Under $800 | 494 | 13% |
| $800 to $1,499 | 1,194 | 31.4% |
| $1,500 to $1,999 | 517 | 13.6% |
| $2,000 to $2,999 | 855 | 22.5% |
| $3,000 or more | 512 | 13.5% |
| No property tax paid | 227 | 6% |
Owners with a mortgage pay a median of $1,896 and owners without one pay $1,420. Owners who have paid off a home have usually held it longer, and in states that cap how fast an existing owner's assessment can rise, long-held homes carry lower assessed values. Census table B25103.
How does the Boundary County property tax bill compare with local incomes?
The median property tax bill of $1,595 is about 2.1% of the median income of Boundary County homeowner households, $74,769 a year. That compares two middles, so a retiree in a long-held home can pay a far larger share. 75.3% of Boundary County's occupied homes are lived in by their owners; renters pay property tax too, just folded into rent.
Have property taxes gone up in Boundary County?
Yes. The median bill went from $1,182 in 2015-2019 to $1,595 in 2020-2024, a 34.9% rise. Over the same span the median home value moved 100.2%, from $205,000 to $410,500. Bills rose more slowly than values, which is what assessment caps and falling millage rates do: the county is taxing a smaller share of each home's worth.
Two Census ACS 5-year periods with no survey years in common, in each period's own dollars. A change counts only if it exceeds the combined 90% margin of error.
Property tax in counties next to Boundary County
Boundary County borders 3 counties, 2 of them across the state line.
| County | Effective rate | Median bill | Median home value |
|---|---|---|---|
| Pend Oreille County, WA | 0.58% | $2,142 | $367,900 |
| Lincoln County, MT | 0.54% | $1,615 | $296,500 |
| Boundary County, ID (this county) | 0.39% | $1,595 | $410,500 |
| Bonner County, ID | 0.38% | $1,847 | $487,900 |
How is a home assessed in Boundary County?
Idaho assesses homes at 100% of market value in every county, Boundary County included. How Idaho assesses and reappraises homes.
Is there a homestead exemption in Boundary County?
Yes. Idaho's homeowner's exemption takes 50% of a primary home's value off the assessment, capped at $125,000. Apply once through the county assessor. That is the Idaho rule, and it applies in Boundary County. Idaho's exemptions and relief programs in full.
When are property taxes due in Boundary County?
Counties mail bills in November. The full amount is due by December 20, or you can split it and pay half by December 20 with the second half due by June 20. The June grace period only applies if the first half was paid in full and on time. Miss either deadline and late charges plus interest are added to whatever is outstanding.
Idaho splits the bill into 2 installments. That is the Idaho rule. Boundary County issues and collects the bill, so the dates printed on your statement are the ones that bind you.
How to appeal your Boundary County property assessment
You contest the assessed value with the county board of equalization, then the Idaho Board of Tax Appeals or district court. The filing deadline is typically the fourth Monday in June for property on the regular roll, or the fourth Monday in November for the subsequent roll. That is the Idaho rule; Boundary County sets the exact dates and forms. The Idaho appeal process step by step.
Idaho rules from primary state sources, reviewed September 7, 2026; sources on the Idaho page.
Work out your own numbers
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How much house can I afford?
Your income, debts and down payment against the 28/36 rule lenders actually use, with Boundary County's tax rate to hand.
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Mortgage calculator
Monthly payment with principal, interest, tax and insurance, plus what an extra payment saves you.
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Idaho income tax
Brackets, standard deduction and what Idaho actually taxes.
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Sales tax in Boundary County
The other local tax: combined state and local rate for this county.
Sources
- Median real estate taxes paid and median home value for Boundary County, Idaho: U.S. Census Bureau, American Community Survey 5-year estimates (2020-2024), tables B25103, B25077, B25102, B25119 and B25003; the five-year comparison uses the 2015-2019 estimates. Neighboring counties: Census county adjacency file.