Boise County, Idaho Property Taxes
Property Taxes in Boise County, Idaho
Median Boise County effective property tax rate: 0.31%, significantly lower than the national median of 1.02%.
Median Boise County home value: $373,992
Median annual Boise County tax bill: $1,090, lower than the national median property tax bill of $2,400.
How are property taxes in Boise County calculated?
Property taxes in Boise County are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Understanding your county's property tax system, exemptions, and reduction opportunities can lead to significant savings. Whether you live in Boise or another part of Boise County, knowing local tax details benefits homeowners and investors.
Boise County’s median property tax rate is also lower than the Idaho median tax rate of 0.42%, and the median annual tax bill is $1,310 lower than the state median.
Last Updated April 13, 2026
Boise County, Idaho Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
0.31%
Estimate Property Tax Bill
$1,159
$1,076
How Does the Boise County Property Tax Calculator Work?
Use this Boise County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Boise County's median effective tax rate of 0.31% to generate your estimate.
Enter your property's estimated assessed value — the figure the assessor assigns for tax purposes, which is typically lower than market value after applicable exemptions. Our calculator uses the median effective rate for a more accurate estimate than the statutory millage rate alone.
Your actual bill may vary based on your specific exemptions, local school district levies, and any special assessment districts that apply to your property. Boise County's median property tax bill is $1,090, which is lower than the national median property tax bill of $2,400 and the state median tax rate of 0.42%.
For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across Boise County.
Property Tax Rates Across Boise County, Idaho
What Are Effective Property Tax Rates Across Boise County?
Local government entities set tax rates, which vary widely across Boise County. Each year, the county estimates its budget for public services and divides that total by the assessed value of all taxable property within its jurisdiction.
Below, compare Boise County's effective property tax rate to other counties in Idaho or the U.S. median of 1.02%.
Boise County's median effective rate stands at 0.31%, which is lower than the national median of 1.02%. Within Boise County, the highest rate is found in Placerville at 0.62%, while Placerville has the lowest at 0.62%.
These variations reflect differences in local school district levies, special assessment districts assessments, and special district bonds — which compound the base county rate.
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Boise County Tax Rate
0.31%
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Idaho Tax Rate
0.42%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Boise County, Idaho
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Banks | 0.18% | 0.28% | 0.34% | 0.38% | 0.43% |
| Boise | 0.20% | 0.22% | 0.28% | 0.32% | 0.39% |
| Garden Valley | 0.26% | 0.29% | 0.36% | 0.39% | 0.44% |
| Horseshoe Bend | 0.20% | 0.24% | 0.29% | 0.35% | 0.49% |
| Idaho City | 0.21% | 0.25% | 0.32% | 0.39% | 0.51% |
| Lowman | 0.26% | 0.35% | 0.38% | 0.42% | 0.53% |
| Placerville | 0.31% | 0.43% | 0.62% | 0.69% | 0.79% |
| Sweet | 0.19% | 0.23% | 0.27% | 0.30% | 0.33% |
Source: Ownwell
Property Tax Assessment Values Across Boise County, Idaho
When examining property taxes in Boise County, understanding the distinction between "market value" and "assessed value" is crucial.
The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Boise County assessor estimates the market value for tax purposes.
The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.
Assessment notices:
In Boise County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of May.
Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Boise County.
For example, the median tax bill in Boise County is $1,090, with tax bills ranging significantly across the county. Garden Valley has the highest median home price at $492,008.
Median Boise County Market Value
$373,992
Median Idaho Market Value
$389,309
Median United States Market Value
$235,294
Property Tax Assessment Values Across Boise County, Idaho
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Banks | $71,440 | $130,903 | $230,747 | $501,439 | $557,252 |
| Boise | $109,788 | $235,152 | $419,002 | $626,506 | $875,797 |
| Garden Valley | $60,928 | $192,018 | $492,008 | $795,239 | $1,113,556 |
| Horseshoe Bend | $33,154 | $125,395 | $382,225 | $685,800 | $953,063 |
| Idaho City | $22,845 | $127,451 | $286,146 | $444,664 | $615,489 |
| Lowman | $39,641 | $84,998 | $231,014 | $349,742 | $471,336 |
| Placerville | $38,062 | $66,173 | $142,660 | $268,466 | $383,855 |
| Sweet | $82,230 | $189,706 | $376,198 | $539,430 | $840,340 |
Source: Ownwell
Property Tax Bills Across Boise County, Idaho
Property tax bills in Boise are calculated by applying the local tax rate to a home’s assessed value, which is based on the market value of the property. That means the higher the assessed value, the higher the tax bill is likely to be. Local taxing authorities also consider factors such as school funding, county services, and other public needs when setting rates.
For homeowners, this can create meaningful differences from one property to another, even within the same county. Boise’s median home price is $373,992, and tax bills vary widely across the county. The 25th percentile tax bill is $508, while the 75th percentile is $1,842 and the 90th percentile reaches $2,648. Median tax bills also differ by city, with Garden Valley at $1,537 and Placerville at $779. Because property taxes are tied to assessed value and local rates, homeowners may see their bills change as home values and budgets shift.
Median Boise County Tax Bill
$1,090
Median Idaho Tax Bill
$1,726
Median United States Tax Bill
$2,400
Property Tax Bills Across Boise County, Idaho
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Banks | $211 | $366 | $831 | $1,388 | $1,784 |
| Boise | $318 | $575 | $1,062 | $1,700 | $2,417 |
| Garden Valley | $178 | $663 | $1,537 | $2,458 | $3,265 |
| Horseshoe Bend | $101 | $354 | $1,103 | $1,843 | $2,509 |
| Idaho City | $77 | $365 | $855 | $1,338 | $1,932 |
| Lowman | $153 | $376 | $822 | $1,272 | $1,623 |
| Placerville | $161 | $473 | $779 | $1,311 | $1,883 |
| Sweet | $235 | $433 | $1,112 | $1,360 | $2,213 |
Source: Ownwell