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Ada County property tax due dates 2026

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Due in 58 days

First half or full annual payment: (statutory)

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Not tax or legal advice; confirm with your county. Dates are shown as published by the source.

Installment timeline

  1. First half or full annual payment

    statutory. Official source

  2. Second half, if first half paid in full

    statutory. Official source

  3. Assessment notice

    Primary assessment notices are sent no later than the first Monday of June.

    Official source. Verified .

Download announced dates (.ics)

Only announced dates are included, with a reminder seven days before. Re-download after dates change.

How to pay

Payment methods

E-check, Debit card, Credit card, Bank bill pay, Check, Money order, Mail, Drop box, In person, Phone

Official source. Verified .

Fees

E-check: $3 for totals under $500,000, $10 for totals over $500,000. Debit card: $3.95. Credit card: 2.4%, minimum $2.

Official source. Verified .

Late payments and penalties

Delinquent after

December 21, 2026

Official source. Statutory. Verified .

A missed December installment incurs a 2% late charge and 1% monthly interest beginning the following January 1. A missed June installment incurs a 2% late charge and 1% monthly interest back to January 1 of that year.

Official source. Verified .

Assessment appeals

File primary-roll appeals by the fourth Monday of June; consult the county for other assessment rolls.

Official source. Verified .

Where to file

Ada County Commissioner’s Office, for the Board of Equalization.

Official source. Verified .

Official appeal information

Official appeal information

Official source. Verified .

Exemptions

Homestead exemption

Who may qualify

Owner-occupied primary residences and up to one acre of land.

Official source. Verified .

Savings

Exempts 50% of assessed value, up to $125,000. For existing homes, own and occupy and apply by the last county business day in December; newly constructed homes have separate notice-based deadlines.

Official source. Verified .

Official exemption information

Official exemption information

Official source. Verified .

Property tax reduction (Circuit Breaker)

Who may qualify

Qualified Idaho homeowners meeting income, home-value and eligibility requirements, including seniors age 65 or older and people with qualifying disabilities.

Official source. Verified .

Savings

Apply January 1–April 15 through the county assessor; qualifying reductions may be up to $1,500.

Official source. Verified .

Official exemption information

Official exemption information

Official source. Verified .

Veterans property tax reduction

Who may qualify

Qualifying Idaho homeowners recognized by VA as 100% service-connected disabled, or receiving 100% compensation for individual unemployability, with a current homeowner exemption.

Official source. Verified .

Savings

File the application with the assessor January 1–April 15; the next business day applies if April 15 is a weekend or specified IRS holiday.

Official source. Verified .

Official exemption information

Official exemption information

Official source. Verified .

County offices

County notes

The statutory December 20 and June 20 payment dates fall on Sundays for this cycle; the next business days are December 21, 2026 and June 21, 2027.

Official source. Statutory. Verified .

December and June installments incur late charges if not paid by the applicable deadline.

Official source. Verified .

Common questions

When is property tax due in Ada County?

First half or full annual payment: December 21, 2026 (statutory). Second half, if first half paid in full: June 21, 2027 (statutory).

Where can I pay Ada County property tax?

Use the official payment portal: https://www.paydici.com/ada-county-id/search/property-tax. E-check, Debit card, Credit card, Bank bill pay, Check, Money order, Mail, Drop box, In person, Phone

What happens if my Ada County payment is late?

A missed December installment incurs a 2% late charge and 1% monthly interest beginning the following January 1. A missed June installment incurs a 2% late charge and 1% monthly interest back to January 1 of that year.

Sources and verification

https://tax.idaho.gov/document-mngr/pubs_ebr00135/
your property tax reduction will appear on your December 2026 tax bill.

Verified

https://legislature.idaho.gov/statutesrules/idstat/Title63/T63CH9/SECT63-903/
The property taxes may be paid in full or paid in two (2) halves, the first half on or before December 20 with a grace period extending to June 20 for the second half if the first half is totally paid.

Verified

https://legislature.idaho.gov/statutesrules/idstat/Title63/T63CH2/SECT63-217/
If the date for filing any such report, claim, tax return, statement or other document or making any such payment falls upon a Saturday, a Sunday, a legal holiday or, in matters arising under chapter 30, title 63, Idaho Code, a holiday recognized by the internal revenue service, such acts shall be considered timely if performed on the next business day.

Verified

https://adacounty.id.gov/treasurer/calculation-of-property-taxes/frequently-asked-questions/
If the December installment is not paid by the deadline, a 2% late charge is added If the June installment is not paid by the deadline, a 2% late charge is added

Verified

https://adacounty.id.gov/treasurer/
Access your property tax bill, payment history, and make secure online payments through the Ada County Treasurer’s Paydici website.

Verified

https://adacounty.id.gov/treasurer/payment-options/
E-checks: Debit card: Credit card: Bill Pay: DROP BOX IN-PERSON PAYMENTS Make checks or money orders payable to: PHONE PAYMENTS

Verified

https://adacounty.id.gov/assessor/property-assessments-records/assessment-notices-appeals/
Notices for the Primary Assessment Roll are sent out no later than the first Monday of June each year.

Verified

https://adacounty.id.gov/assessor/
Ada County Assessor

Verified

https://adacounty.id.gov/assessor/tax-relief-programs/homeowners-exemption/
Each owner-occupied primary residence (house or manufactured home) and up to one-acre of land is eligible for a Homestead Exemption.

Verified

https://adacounty.id.gov/assessor/tax-relief-programs/circuit-breaker-tax-reduction/
You might qualify for a property tax reduction if all of these are true: 65 or older Disabled as recognized by the Social Security Administration, Railroad Retirement Board, Federal Civil Service, Veterans Affairs, or a public employment retirement system not covered by these agencies

Verified

https://adacounty.id.gov/assessor/tax-relief-programs/veterans-property-tax-reduction/
The U.S. Department of Veterans Affairs recognizes you as 100% service-connected disabled, or you receive 100% compensation due to individual unemployability. The property must have a current homeowner’s exemption.

Verified

Plan your next step

Estimate a bill and check your assessment

Census survey estimates, 2020–2024. These county medians describe a survey population; they do not establish your home’s correct assessment.

Median home value
$512,300
Median annual taxes paid
$2,655
Estimated effective rate
0.52%

Census home values, Census taxes paid. Last verified 2026-10-24. Rate = median taxes ÷ median home value. Displayed rates are rounded; calculations use the unrounded ratio.

Example at $512,300: $2,655 per year, using the Census estimate.

Is my assessment too high?

At the default market value and bill, both equal the county medians. Being above a median does not establish overassessment. Assessed or taxable values may use a different basis and cannot be compared directly with Census market values.

Appeal timing and filing

File primary-roll appeals by the fourth Monday of June; consult the county for other assessment rolls.

How to file: Ada County Commissioner’s Office, for the Board of Equalization.

State guidance: First appeal assessment or exemption denial to the county Board of Equalization; its decision may then go to the state Board of Tax Appeals or District Court within 30 days.

Official appeal information and filing instructions

Appeal sources and verification

No savings are promised. Not tax or legal advice; confirm with your county. Estimate methodology and limitations.

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