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Updated 2025 Tax Year

Kittitas County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
Maximum regular rate $1.26 per $1,000 assessed value, actual rates vary significantly by taxing district location
1st Due
Apr 30
2nd Due
Oct 31
Exemptions
5+ Available
Section 1

How Property Tax Works

Kittitas County property taxes fund essential local services including schools, fire protection, law enforcement, roads, and other municipal services. The county uses an assessed value system where properties are valued at market value, and taxes are calculated based on a rate per $1,000 of assessed valuation. Property owners in Kittitas County face an authorized maximum regular property tax rate of $1.26 per $1,000 of assessed valuation for 2025, though actual rates vary significantly by location.

Your total property tax bill depends on your specific location within Kittitas County, as various special taxing districts (school districts, fire districts, library districts, etc.) add their own levies to the base county rate. This means two properties with identical assessed values can have different tax bills based on which special districts serve their area. The county spans 2,333 square miles with diverse communities, each potentially served by different combinations of taxing districts.

Section 2

What Makes Up Your Tax Bill

ComponentRate (per $1,000)Description
County General~$1.26Maximum authorized rate for FY 2025
School DistrictsVariesLocal school district levies (varies by district)
Fire DistrictsVariesFire protection services (location dependent)
Library DistrictsVariesPublic library services (if applicable)
Hospital DistrictsVariesPublic hospital services (if applicable)
Port DistrictsVariesPort authority services (if applicable)
Total Effective Rate$8-15+Typical range depending on special districts

Note: Rates shown are for levy year 2025. Your actual rate depends on which special taxing districts serve your property location. Contact the Kittitas County Assessor for your specific district combination and current rates.

Section 3

When Are Property Taxes Due?

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

First Installment
Apr 30
Delinquent after Dec 10
Second Installment
Oct 31
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's a change in property ownership or new construction that increases the assessed value mid-tax year. In Kittitas County, supplemental taxes are most commonly triggered by property sales (change of ownership) or completion of new construction, additions, or major improvements. These taxes cover the difference between the old and new assessed values for the remaining portion of the current tax year.

For example, if you purchase a home in Kittitas County in June that was previously assessed at $200,000 but sells for $400,000, the assessor may issue a supplemental tax bill based on the increased assessed value from July through the end of the tax year. The supplemental tax would be calculated as: (New Assessed Value - Old Assessed Value) × Your Area's Tax Rate × Remaining Months in Tax Year ÷ 12 months.

Example Calculation

Example 1: $300,000 Home in Ellensburg Area

  • Assessed Value: $300,000
  • Estimated Tax Rate: $12.50 per $1,000
  • Annual Tax: $300,000 ÷ 1,000 × $12.50 = $3,750
  • Monthly Escrow: $312.50

Example 2: $600,000 Home with Rural Fire District

  • Assessed Value: $600,000
  • Estimated Tax Rate: $10.80 per $1,000
  • Annual Tax: $600,000 ÷ 1,000 × $10.80 = $6,480
  • Monthly Escrow: $540.00

Example 3: $1,000,000 Home in Cle Elum Area

  • Assessed Value: $1,000,000
  • Estimated Tax Rate: $11.75 per $1,000
  • Annual Tax: $1,000,000 ÷ 1,000 × $11.75 = $11,750
  • Monthly Escrow: $979.17

Note: Tax rates vary significantly by special district combinations. Senior citizens and disabled persons may qualify for property tax credits that reduce these amounts, but applications are required.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Kittitas County require property tax escrow accounts for borrowers with less than 20% equity. Your lender collects 1/12 of your estimated annual property tax bill with each monthly mortgage payment, holding these funds in escrow until tax payments are due. Lenders typically pay your property taxes directly to Kittitas County on the April 30th and October 31st due dates.

Each year, your lender will provide an escrow analysis statement showing the previous year's tax payments and adjusting your monthly escrow amount based on any changes in your property tax bill. If your taxes increase due to reassessment or rate changes, your monthly mortgage payment will increase accordingly. You should verify that your lender has paid your taxes correctly by checking your property tax account online or contacting the Kittitas County Treasurer's office directly.

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 Kittitas County? A: Property taxes are paid in two installments annually. First half taxes are due by April 30th, and second half taxes are due by October 31st. These deadlines apply to the current tax year.

Q: What property tax credits are available in Kittitas County? A: Washington State offers several property tax credits including the Senior/Disabled Person Property Tax Credit for qualifying homeowners over 61 or disabled persons with income limitations. A separate Disabled Veteran Credit is available for qualifying veterans. All credits require annual application and are not automatic.

Q: Is there a homestead credit that limits assessment increases? A: Washington State does not have a traditional homestead credit that caps assessment growth. However, certain property tax relief programs exist for senior and disabled homeowners that must be applied for annually through the county assessor's office.

Q: How often are properties reassessed in Kittitas County? A: Washington State requires properties to be assessed at 100% of market value annually. The Kittitas County Assessor reviews property values each year, with physical inspections conducted on a rotating cycle or when triggered by sales or improvements.

Q: How do I appeal my property assessment? A: Assessment appeals must be filed with the Kittitas County Board of Equalization by July 1st of the assessment year. Contact the County Assessor's office for appeal forms and procedures.

Q: What are the penalties for late property tax payments? A: Late payments incur interest charges and penalties. First half taxes not paid by April 30th accrue interest from May 1st. Second half taxes not paid by October 31st accrue interest from November 1st. Contact the County Treasurer for current penalty rates.

Q: Can I pay property taxes online? A: Yes, Kittitas County typically offers online payment options through their official website. Contact the County Treasurer's office or visit the county website for current payment methods and any associated convenience fees.

Q: Why do property taxes vary within Kittitas County? A: Tax rates vary based on the combination of special taxing districts serving your property, including school districts, fire districts, library districts, and others. Two identical homes in different areas can have significantly different tax bills due to these district variations.

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