Property tax in Twin Falls County, Idaho
In Twin Falls County, the property tax bill comes from the Twin Falls County Treasurer. The 2026 bill is paid in 2 installments, and the next one is due December 20, 2026. You can look up and pay the bill on the county's own payment page. Taken from Twin Falls County's own pages, checked September 23, 2026.
The median property tax bill in Twin Falls County, Idaho is $2,066 a year, which is about 0.61% of the county's median home value of $337,900. That effective rate is higher 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.
Who sends the property tax bill in Twin Falls County, and how do you pay it?
The bill comes from the Twin Falls County Treasurer. The value it is based on is set by a separate office, the Twin Falls County Assessor, which is who to ask if the value looks wrong. For how to look up and pay the bill, go to the county's own payment information.
In Idaho the county treasurer collects property tax for every local taxing district, so one bill covers the county and the city, school, fire, highway and other districts your property sits in. Each November a bill is sent for every parcel even when a mortgage company pays; the bill notes if a lender is scheduled to pay. Online payments go through the county's processor, Point & Pay, which charges 2.5% for credit cards, $3.95 for debit cards and $2.00 for e-checks. The treasurer accepts partial payments and prepayments of at least $25 toward coming taxes. Talk to the Assessor's Office first if you think your value is wrong; most disputes are settled in an informal review before a formal appeal.
When are property taxes due in Twin Falls County?
For the 2026 bill, Twin Falls County splits the bill into 2 payments, the first due December 20, 2026 and the last June 20, 2027. A half not paid by its due date becomes delinquent and a 2% late charge is added. Interest of 1% a month on the unpaid tax and late charge is counted from January 1 after the year the tax was levied, so for the 2026 tax a late second half is charged interest back to January 1, 2027, not from June 21.
| Payment | Due | Note |
|---|---|---|
| Full year, or first half | December 20, 2026 | The whole year's tax may be paid by December 20, or half by then with the second half due June 20. December 20, 2026 is a Sunday; the county and Idaho law extend a weekend due date to the next business day, Monday, December 21, 2026. A mailed payment must carry a U.S. Postal Service postmark on or before the due date; a postage-meter mark does not count. Online payments must be posted before midnight on the due date, and in-person payments must be made by 5:00 p.m. Bills are mailed in November. |
| Second half | June 20, 2027 | Applies only if you paid the first half, not the whole year, by December 20. June 20, 2027 is a Sunday, so under the weekend rule the second half is due Monday, June 21, 2027. |
From Twin Falls County's published schedule, checked September 23, 2026. If a date falls on a weekend or holiday, the county's own rules on the next business day apply.
Estimate the property tax on a home in Twin Falls County
Enter a home's market value for a ballpark at Twin Falls County's average effective rate of 0.61% (Census). The real bill depends on the home's assessed value, the millage where it sits and any exemptions.
Estimated property tax: $2,061 / year
Property tax in Twin Falls County at a glance
| Measure | Value |
|---|---|
| Median annual property tax | $2,066 |
| Median home value | $337,900 |
| Effective tax rate | 0.61% |
| 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 Twin Falls County compare in Idaho?
Among Idaho's 44 counties, Twin Falls County has the 6th highest effective property-tax rate: 5 rank higher and 38 rank lower. That places it among the most heavily taxed counties in the state. Nationally, it ranks 2214th of 3135 US counties by effective rate. See every Idaho county ranked.
How much do homeowners in Twin Falls County actually pay?
The median is only the middle bill. Across Twin Falls County's 24,488 owner-occupied homes, 24.3% pay $3,000 or more a year in property tax, 49.1% pay at least $2,000, and 8.9% pay under $800. Another 5.1% report paying no property tax at all, which usually means an exemption covers the whole bill.
| Annual bill | Homes | Share |
|---|---|---|
| Under $800 | 2,178 | 8.9% |
| $800 to $1,499 | 4,860 | 19.8% |
| $1,500 to $1,999 | 4,177 | 17.1% |
| $2,000 to $2,999 | 6,080 | 24.8% |
| $3,000 or more | 5,942 | 24.3% |
| No property tax paid | 1,251 | 5.1% |
Owners with a mortgage pay a median of $2,176 and owners without one pay $1,902. 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 Twin Falls County property tax bill compare with local incomes?
The median property tax bill of $2,066 is about 2.5% of the median income of Twin Falls County homeowner households, $82,672 a year. That compares two middles, so a retiree in a long-held home can pay a far larger share. 70.5% of Twin Falls 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 Twin Falls County?
Yes. The median bill went from $1,351 in 2015-2019 to $2,066 in 2020-2024, a 52.9% rise. Over the same span the median home value moved 102.6%, from $166,800 to $337,900. 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 Twin Falls County
Twin Falls County borders 6 counties, 1 of them across the state line.
| County | Effective rate | Median bill | Median home value |
|---|---|---|---|
| Jerome County, ID | 0.63% | $1,725 | $271,800 |
| Twin Falls County, ID (this county) | 0.61% | $2,066 | $337,900 |
| Elmore County, ID | 0.54% | $1,701 | $316,500 |
| Gooding County, ID | 0.51% | $1,279 | $250,900 |
| Elko County, NV | 0.5% | $1,492 | $301,400 |
| Cassia County, ID | 0.41% | $1,166 | $284,600 |
| Owyhee County, ID | 0.4% | $1,432 | $359,800 |
How is a home assessed in Twin Falls County?
Idaho assesses homes at 100% of market value in every county, Twin Falls County included. How Idaho assesses and reappraises homes.
Is there a homestead exemption in Twin Falls 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 Twin Falls County. Idaho's exemptions and relief programs in full.
Twin Falls County does not add relief programs of its own beyond the Idaho ones (checked September 23, 2026).
How to appeal your Twin Falls County property assessment
In Twin Falls County you appeal to the Twin Falls County Board of Equalization (the county commissioners). The deadline: In writing on a form from the commissioners' office by 5:00 p.m. on the fourth Monday of June. For 2026 assessments that was June 22, 2026; for 2027 assessments it will be June 28, 2027. Assessment notices are mailed at the beginning of June. A board decision can be appealed within 30 days to the Idaho Board of Tax Appeals, or to district court. How to file. Checked September 23, 2026 against the official appeal rules.
How Idaho's appeal process works, including the next level if the first one turns you down.
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 Twin Falls 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 Twin Falls County
The other local tax: combined state and local rate for this county.
Sources
- Median real estate taxes paid and median home value for Twin Falls 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.