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Updated 2025 Tax Year

Canyon County
Property Tax Guide

Everything you need to know about property taxes in Canyon County, ID. Rates, due dates, exemptions, and how it affects your monthly payment.

7 Official Sources
8 min read
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Quick Facts
Tax Rate
0.440% to 0.692% effective rate - varies by taxing districts serving your property location
1st Due
Dec 20
2nd Due
Jun 20
Exemptions
5+ Available
Section 1

How Property Tax Works

Canyon County, Idaho operates a property tax system that funds essential local services including schools, fire protection, ambulance services, road maintenance, and county operations. Property taxes are calculated based on assessed values and applied tax rates that vary significantly by location within the county due to different combinations of special taxing districts.

The effective tax rate in Canyon County ranges from approximately 0.440% in rural areas to 0.692% in urban areas for the 2025 tax year. Your actual rate depends on which special taxing districts serve your property, such as school districts, highway districts, fire districts, and ambulance districts. Properties within city limits or specific service areas may have additional levies that increase the overall tax rate.

Canyon County assesses properties annually, with taxes becoming a lien on January 1st and bills typically mailed in November. The county offers several tax credit programs that can reduce your tax bill, but these require annual applications and are not automatically applied to eligible properties.

Section 2

What Makes Up Your Tax Bill

The following rates apply to the 2025 levy year and vary by code area within Canyon County:

ComponentSample Rate (Urban)Sample Rate (Rural)Description
Canyon County0.00152082400.0015208240Base county operations, sheriff, courts
School District0.0004117490Varies by districtLocal school funding (e.g., Caldwell School Dist #132)
Highway DistrictVariesVariesRoad maintenance and construction
Fire DistrictVariesVariesFire protection services
Ambulance District0.00027894000.0002789400Emergency medical services
Total Effective Rate~0.692%~0.440%Combined rate varies by location

Note: These are sample rates for specific code areas. Your actual rate depends on your property's location and which special taxing districts serve your area. Rural properties typically have lower rates due to fewer special district services.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Canyon County, property taxes are due in two installments:

First Installment
Dec 20
Delinquent after Dec 10
Second Installment
Jun 20
Delinquent after Apr 10
Pro tip: If you pay through mortgage escrow, your lender splits these payments across your monthly mortgage. If you pay directly, set calendar reminders to avoid late penalties.
Section 4

Supplemental Tax Bills

Supplemental taxes are additional property tax bills issued when there are significant changes to a property during the tax year. The most common triggers include new construction, major improvements, or changes in property ownership that reveal previously unreported improvements.

Supplemental taxes are calculated by determining the difference between the old assessed value and the new assessed value, then applying the current tax rate to that difference. The supplemental tax is prorated based on the number of months remaining in the tax year after the change occurred.

For example, if you complete a $100,000 home addition in March and Canyon County's rate is 0.692%, your supplemental tax would be approximately $692 × (9 months remaining ÷ 12 months) = $519. Supplemental tax notices for new construction are typically mailed in February or March, with the first installment due March 20th or April 20th, and payments can be split into two installments.

Example Calculation

The following examples show annual property tax calculations using Canyon County's urban rate of 0.692% for the 2025 tax year:

$300,000 Home (Urban Area)

  • Assessed Value: $300,000
  • Less: Homestead Credit (if applied for): Varies
  • Net Taxable Value: ~$300,000
  • Annual Tax: $300,000 × 0.00692 = $2,076
  • Monthly (if escrowed): $173

$600,000 Home (Urban Area)

  • Assessed Value: $600,000
  • Less: Homestead Credit (if applied for): Varies
  • Net Taxable Value: ~$600,000
  • Annual Tax: $600,000 × 0.00692 = $4,152
  • Monthly (if escrowed): $346

$1,000,000 Home (Urban Area)

  • Assessed Value: $1,000,000
  • Less: Available Tax Credits (if applied for): Varies
  • Net Taxable Value: ~$1,000,000
  • Annual Tax: $1,000,000 × 0.00692 = $6,920
  • Monthly (if escrowed): $577

Note: Rural properties would pay approximately 36% less due to lower tax rates. Tax credits require separate applications and are not automatically applied.

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Section 5

Escrow & Property Taxes

Most mortgage lenders require property tax escrow accounts to ensure timely tax payments. Your lender collects monthly payments equal to 1/12th of your estimated annual property tax bill and holds these funds in a dedicated escrow account.

Canyon County property taxes become due in two installments: the first half is typically due December 20th, and the second half is due June 20th of the following year. Your mortgage company will pay these bills directly from your escrow account when they become due. Lenders are required to provide annual escrow statements showing all deposits and payments.

You can verify that your mortgage company has paid your taxes correctly by checking your account status online through the Canyon County Treasurer's website at https://www.canyonco.org/elected-officials/treasurer/. If you pay taxes directly (without escrow), you can also make payments through this portal. The site provides current balance information, payment history, and online payment options for your convenience.

How HonestCasa Helps
  • Understand whether your escrow is set correctly
  • See how rising taxes will change your monthly payment
  • Plan ahead instead of being surprised by "shortage" letters
Section 6

Frequently Asked Questions

Q: When are property taxes due in Canyon County? A: For the 2025 tax year, the first installment is due December 20, 2024, and the second installment is due June 20, 2025. Late payments incur penalties and interest charges.

Q: What tax credits are available and how do I apply? A: Canyon County offers several tax credits including the Homestead Credit and Property Tax Reduction (Circuit Breaker) program. These credits reduce your tax bill but require annual applications. Contact the Canyon County Assessor at https://www.canyonco.org/elected-officials/assessor/ for application forms and deadlines.

Q: How does the Homestead Credit work? A: The Homestead Credit limits annual assessment increases on your primary residence, typically capping growth at a specific percentage. This credit does not reduce market value but can significantly reduce your tax bill over time. You must apply annually and the property must be your primary residence.

Q: When does Canyon County assess properties? A: Canyon County conducts annual assessments with values determined as of January 1st each year. Assessment notices are typically mailed in April, with appeal deadlines usually in June.

Q: What happens if I pay my property taxes late? A: Late payments incur penalties and interest. After June 20th (for the second installment), penalty and interest charges begin accruing monthly until the tax is paid in full.

Q: Can I pay my property taxes online? A: Yes, Canyon County offers online payment options through the Treasurer's website at https://www.canyonco.org/elected-officials/treasurer/. You can pay by electronic check or credit card, though credit card payments may include processing fees.

Q: Why is my tax rate different from my neighbor's? A: Tax rates vary by special taxing districts within Canyon County. Your rate depends on which school district, fire district, highway district, and other special districts serve your property location.

Q: How do I appeal my property assessment? A: Assessment appeals must be filed with the Canyon County Board of Equalization, typically by late June. Contact the Canyon County Assessor's office for appeal forms and specific deadlines for the current tax year.

Verified Sources

Backed by 7 Official Government Sources

Every fact in this guide is sourced from official county, state, and federal documents.

01
County
Canyon County Assessorcanyonco.org
02
County
Canyon County Assessorcanyonco.org
03
County
canyon county 2025 tax rates by code areacanyoncounty.id.gov
04
Tax Doc
2025 average property tax ratestax.idaho.gov
05
County
Property Tax | Canyon Countycanyoncounty.id.gov
06
County
Property Tax Reduction Program | Canyon Countycanyoncounty.id.gov
07
County
Treasurer | Canyon Countycanyoncounty.id.gov
All sources verified as of 2025 Tax Year

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