Mill Creek Property Tax
Access 2026 property tax rates, payment portals, and assessment tools for Mill Creek. Taxes are administered by Williams County.
Local Rate
N/A
County Avg
1.05%
State Avg
0.01%
City vs. County Jurisdiction
While you live in Mill Creek, property taxes are officially administered by Williams County. The county handles your assessment, billing, appeals, and exemptions.
Mill Creek Tax Calculator
Est. Annual Bill
Rate: % (Williams County)
How Property Taxes Work in Mill Creek
Property taxes for Mill Creek residents are calculated on the ad valorem principle — your bill is proportional to the fair market value determined by the Williams County Appraisal District.
Assessment Role
The county assessor determines the value of all real estate in Mill Creek every tax year.
Collection Role
Taxes are collected by the county tax office and distributed to city, school, and special-district funds.
Mill Creek Tax Components
Your annual bill is a combined total of levies from multiple local government entities:
Lowering Your Mill Creek Property Tax Bill
Claim Exemptions
Most homeowners qualify for a Homestead Exemption that significantly reduces the taxable value of your primary residence. Seniors and veterans may qualify for additional relief.
Protest Your Value
If the county assessment exceeds fair market value you can file an appeal with the Appraisal Review Board (ARB). Over 50% of appeals result in a reduction.
2026 Important Deadlines
Assessment Notices
April – May
Protest Deadline
May 15th*
Payment Due
January 31st
*Protest deadlines are generally May 15th or 30 days after your notice was mailed, whichever is later.
Mill Creek Property Tax FAQs
For 2026, property tax rates in Mill Creek vary by parcel. Refer to the Williams County average rate of 1.0513333333333% as a baseline estimate.
Residents of Mill Creek pay property taxes to the Williams County Tax Assessor — not a city office. Use the county's official payment portal.
Yes. File a Notice of Protest with the Williams County Appraisal District within 30 days of receiving your valuation notice. See the county appeal guide for step-by-step instructions.
Williams County Official
Property tax for Mill Creek is handled at the county level.
Nearby Cities
💡 Tax Tip
Check for Homestead or Senior exemptions on the Williams County portal. These can reduce your taxable value by $25,000–$100,000+.