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Ada County, Idaho Property Taxes (2026)

Ada County homeowners pay a median property tax of $2,643/year on a median home value of $476,000 — an effective rate of 0.56%, which is below the national median of 1.02%. Ada County has a population of approximately 508,052.

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Effective Tax Rate

0.56%

Lower than the Idaho median of 1.00%

Median Home Value

$476,000

Annual Tax Bill

$2,643

~$220/month

Est. Annual Savings

$396

If reduced by 15%

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Ada County, Idaho Property Tax Calculator

Enter your address to instantly see if you're overpaying on property taxes. Our tool compares your assessed value against recent comparable sales in Ada County to estimate your potential savings.

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Average Annual Savings

$396

Estimated savings for Ada County homeowners

Property Tax Rates: Ada County vs. Idaho vs. National

Ada County0.56%
Idaho Median1.00%
National Median1.02%

Key stat: The effective property tax rate in Ada County, Idaho is 0.56%, compared to the Idaho median of 1.00% and the national median of 1.02%. (Source: U.S. Census Bureau, ACS 5-Year Estimates)

How Ada County Compares Across Idaho

See where Ada County's tax metrics fall relative to all 44 Idaho counties.

Tax Rate Distribution

Percentile distribution across all Idaho counties

10th

0.00%

25th

0.00%

Median

1.00%

75th

1.00%

90th

1.00%

Home Value Distribution

Percentile distribution across all Idaho counties

10th

$210,750

25th

$239,425

Median

$281,950

75th

$342,900

90th

$457,200

Tax Bill Distribution

Percentile distribution across all Idaho counties

10th

$1,009

25th

$1,222

Median

$1,420

75th

$1,786

90th

$2,162

Ada County County Assessor Information

Ada County County Assessor

Assessing Authority

Ada County Assessor

Appeal Deadline

Within 60 days of notice

Idaho appeal filing deadline

State

Idaho

How to appeal

Let TaxDrop handle it for you →

How to Appeal Your Property Taxes in Ada County

If you own property in Ada County, you have the legal right to appeal your assessed value. Here is the step-by-step process:

1

Review your assessment notice

Check the assessed value from the Ada County Assessor. Compare it to recent sales of similar homes in your area.

2

File your appeal before the deadline

The Idaho deadline is Within 60 days of notice. Missing this deadline means waiting until the next assessment year.

3

Gather supporting evidence

Compile recent comparable sales, photos of property condition issues, independent appraisals, or any factors that reduce your home's value.

4

Present your case

Attend a hearing or submit your evidence to the County Assessor. Present clear data showing your assessed value is too high.

5

Receive your decision

If successful, your assessed value and tax bill will be reduced. With a median bill of $2,643, even a 10-15% reduction means $264-$396 in annual savings.

Skip the hassle — let TaxDrop handle it

TaxDrop's licensed consultants analyze your property, build your case with comparable sales data, and represent you through the entire appeal process. You pay nothing unless we save you $500 or more.

Start Your Ada County Appeal →Free Tax Rate Calculator

Property Tax Exemptions in Idaho

Idaho homeowners may qualify for exemptions that reduce their taxable value. Common exemptions include:

Homestead Exemption

Available to primary residence owners. Reduces the assessed value used to calculate your tax bill.

Senior/Over-65 Exemption

Additional exemption for homeowners age 65+. May include a tax ceiling that freezes your bill.

Disability Exemption

For homeowners with qualifying disabilities. Similar benefits to the over-65 exemption.

Veteran Exemption

Disabled veterans may receive partial or full exemptions depending on disability rating.

Frequently Asked Questions

What is the property tax rate in Ada County, Idaho?
The median effective property tax rate in Ada County, Idaho is 0.56%. On a home valued at $476,000, the median annual property tax bill is $2,643. Source: U.S. Census Bureau, ACS 2026.
How much are property taxes in Ada County?
The median annual property tax bill in Ada County is $2,643, which works out to approximately $220/month. This is based on the median home value of $476,000 and an effective tax rate of 0.56%.
How do I appeal my property taxes in Ada County?
To appeal your property taxes in Ada County, Idaho, you need to file with the Ada County Assessor before the deadline of Within 60 days of notice. You'll need evidence that your assessed value exceeds your property's market value, such as recent comparable sales. TaxDrop can handle this entire process for you — you pay nothing unless we save you $500 or more.
Is Ada County a high property tax area?
Ada County's effective tax rate of 0.56% is below the national median of 1.02%. It's below the Idaho median of 1.00%.
What is the deadline to appeal property taxes in Idaho?
The deadline to appeal property taxes in Idaho is Within 60 days of notice. It's important to file before this deadline — missing it means waiting until the next assessment cycle. TaxDrop monitors deadlines and files on your behalf to ensure you never miss the window.
Can TaxDrop help lower my Ada County property taxes?
Yes. TaxDrop helps homeowners in Ada County, Idaho appeal their property tax assessments. We analyze your property, compare it against local comparable sales, and handle the entire appeal process. Our fee is 25% of your savings — and if we don't save you at least $500, you pay nothing.

Nearby Counties

Adams County

Rate: 0.41%

Tax bill: $1,351

Bannock County

Rate: 0.72%

Tax bill: $1,918

Bear Lake County

Rate: 0.45%

Tax bill: $1,061

Benewah County

Rate: 0.55%

Tax bill: $1,407

Bingham County

Rate: 0.54%

Tax bill: $1,389

← View all 44 Idaho counties

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