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Assessor
Latest News
Personal property assessment forms were mailed on Jan. 25. Forms are due March 1. Learn more.
- e-File your personal property assessment - Use the unique secure code (see graphic below) on your assessment form and follow the prompts.
- Didn't receive an assessment form in the mail by mid-February? Visit our Personal Property Forms page to fill out an online form or download a PDF copy.
Responsibilities
The Assessor is charged with placing a fair market value on property as of the tax date. The property tax in Missouri is “ad valorem,” meaning the taxes are based on the property value.
The Assessor has no jurisdiction or responsibility for taxing jurisdiction budgets or establishing the tax rate.
Information maintained by this office is for assessment purposes only and should not be used to verify or transfer ownership. All maps maintained, provided and/or purchased are based on assessment information and do not represent a legal survey of the parcels shown and shall not be used for conveyance or the establishment of property boundaries.
Certificate of Non-Assessment (Tax Waiver)
A Certificate of Non-Assessment, also known as a tax waiver, may be obtained at the Assessor's Office if you did not own a vehicle in St. Charles County on January 1. The Certificate is required by the Missouri Department of Revenue to license motor vehicles or obtain a business license in St. Charles County. Learn more about requirements for the Certificate of Non-Assessment.
Resources
- Property Search Database: Search property assessment information by partial address or parcel identification number.
- Determine What You Need for Personal Property (PDF): Find out if you should declare personal property, or are eligible for a Certificate of Non-Assessment / tax waiver.
Tax Bills
Your tax bill is comprised of three key components:
- Assessment Authority
- Taxing Authority
- Collection Authority
Assessment Authority
The assessment authority (Assessor’s Office) is responsible for establishing the fair market value of all property within St. Charles County as of the tax date. This assures the tax burden is distributed fairly among those responsible for payment.
Taxing Authority
The taxing authority (school, city, fire districts, etc.) establishes the tax rate based on the budgetary requirements needed to appropriately fund the services provided within their jurisdiction.
Collection Authority
The collection authority (Collector of Revenue’s Office) is responsible for collecting the amount of tax assigned to each property owner.