Gem County, Idaho Property Taxes
Property Taxes in Gem County, Idaho
Median Gem County effective property tax rate: 0.26%, significantly lower than the national median of 1.02%.
Median Gem County home value: $379,845
Median annual Gem County tax bill: $1,087, lower than the national median property tax bill of $2,400.
How are property taxes in Gem County calculated?
Property taxes in Gem 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 Gem County or another part of Gem County, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Gem County, Idaho Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
0.26%
Estimate Property Tax Bill
$988
$916
How Does the Gem County Property Tax Calculator Work?
Use this Gem County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Gem County's median effective tax rate of 0.26% to generate your estimate.
Enter your property's estimated assessed value — the value assigned 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 or improvement districts that apply to your property. Gem County's median tax rate is lower than the 0.42% state median and far below the 1.02% national median.
For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across Gem County. The county’s median property tax bill is $1,087, with bills ranging from $445 in Letha to $1,293 in Horseshoe Bend.
Property Tax Rates Across Gem County, Idaho
What Are Effective Property Tax Rates Across Gem County?
Local government entities set tax rates, which vary widely across Gem 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 Gem County's effective property tax rate to other counties in Idaho or the U.S. median of 1.02%.
Gem County's median effective rate stands at 0.26%, which is lower than the national median of 1.02%. Within Gem County, the highest rate is found in Emmett at 0.26%, while Emmett has the lowest at 0.26%.
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 Ă· 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 Gem County Tax Rate
0.26%
Our median effective property tax rate (tax bill Ă· 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 Gem County, Idaho
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Caldwell | 0.19% | 0.22% | 0.23% | 0.25% | 0.34% |
| Eagle | 0.20% | 0.22% | 0.27% | 0.29% | 0.33% |
| Emmett | 0.20% | 0.22% | 0.28% | 0.36% | 0.61% |
| Horseshoe Bend | 0.20% | 0.21% | 0.22% | 0.25% | 0.31% |
| Letha | 0.12% | 0.21% | 0.23% | 0.32% | 0.46% |
| Ola | 0.17% | 0.19% | 0.23% | 0.30% | 0.40% |
| Sweet | 0.17% | 0.20% | 0.22% | 0.28% | 0.32% |
| New Plymouth | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Gem County, Idaho
When examining property taxes in Gem 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 Gem 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 Gem County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of June.
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 Gem County.
For example, the median tax bill in Gem County is $1,087, with tax bills ranging significantly across the county. Horseshoe Bend has the highest median home price at $577,900.
Median Gem County Market Value
$379,845
Median Idaho Market Value
$389,309
Median United States Market Value
$235,294
Property Tax Assessment Values Across Gem County, Idaho
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Caldwell | $135,259 | $316,517 | $477,216 | $684,144 | $901,895 |
| Eagle | $130,289 | $295,106 | $433,902 | $705,046 | $874,318 |
| Emmett | $176,744 | $266,675 | $379,357 | $519,903 | $690,117 |
| Horseshoe Bend | $286,519 | $407,196 | $577,900 | $677,508 | $774,757 |
| Letha | $34,510 | $82,462 | $181,771 | $276,068 | $480,604 |
| Ola | $86,714 | $219,578 | $364,036 | $517,945 | $689,796 |
| Sweet | $87,211 | $250,752 | $422,690 | $604,224 | $710,612 |
| New Plymouth | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Gem County, Idaho
Property tax bills in Gem County are based on the assessed value of a home and the local tax rate applied to that value. When a property’s market value rises, the assessed value can increase as well, which may lead to a higher bill. Local taxing jurisdictions also matter, since the final amount reflects the combination of county, city, school, and other levies.
With a median home price of $379,845, homeowners in Gem County often see bills that vary widely depending on location and property characteristics. The 25th percentile tax bill is $712, while the 75th percentile is $1,510 and the 90th percentile reaches $1,957. Median bills also differ by city, from $445 in Letha to $1,293 in Horseshoe Bend.
For homeowners, this means two similar homes can have very different tax bills if their assessed values or local rates differ. Understanding how the bill is calculated can help property owners better anticipate annual costs.
Median Gem County Tax Bill
$1,087
Median Idaho Tax Bill
$1,726
Median United States Tax Bill
$2,400
Property Tax Bills Across Gem County, Idaho
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Caldwell | $332 | $640 | $1,102 | $1,604 | $2,287 |
| Eagle | $305 | $696 | $1,227 | $1,517 | $1,997 |
| Emmett | $313 | $737 | $1,105 | $1,525 | $1,966 |
| Horseshoe Bend | $439 | $882 | $1,293 | $1,669 | $1,953 |
| Letha | $141 | $222 | $445 | $605 | $1,166 |
| Ola | $214 | $420 | $756 | $1,100 | $1,695 |
| Sweet | $196 | $514 | $944 | $1,324 | $1,682 |
| New Plymouth | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | June 22 |
Links | |
|---|---|
| Gem Tax Assessor | |
| Website | experience.arcgis.com |