St Louis County Personal Property Tax

st louis county personal property tax


When it comes to understanding personal property tax in St. Louis County, many residents find themselves in a labyrinth of regulations, deadlines, and forms. Whether you own a vehicle, boat, or trailer, it’s important to understand how personal property tax works in this jurisdiction. In this comprehensive guide, we’ll demystify St. Louis County personal property tax, explore its intricacies, and provide valuable tips for navigating the system.

What is Personal Property Tax?

In St. Louis County, personal property tax is levied on movable assets such as cars, boats, motorcycles, and trailers. Unlike real estate taxes, which focus on immovable assets like homes and land, personal property tax is about items that can be transported.

Who is Required to Pay?

Every resident of St. Louis County who owns taxable personal property as of January 1st of a tax year is required to pay personal property taxes.

How is the Tax Calculated?

The formula for calculating your personal property tax in St. Louis County generally involves two variables:

  1. Assessed Value: This is based on the fair market value of your asset multiplied by an assessment ratio.
  2. Tax Rate: The rate at which your assessed value is taxed, often denoted in mills or as a percentage.

Key Dates and Deadlines

Mark your calendars for these important deadlines:

  1. Declaration Forms: Must be submitted by March 1st.
  2. Payment Due: Payments are generally due by December 31st of the same tax year.

Methods of Payment

You have multiple options for making your payments:

  • Online: Through the official St. Louis County website.
  • In-Person: At the designated county offices.
  • By Mail: Check payments can also be mailed.

Penalties for Late Payment

Failure to meet the deadline for personal property tax in St. Louis County results in late fees and possible legal repercussions.


  1. Is personal property tax deductible?

    • Yes, personal property tax is usually deductible on your federal income taxes.
  2. Do I need to declare my property every year?

    • Yes, it is required to declare your property annually by March 1st.
  3. Can I appeal my property tax assessment?

    • You have the right to appeal if you disagree with your assessed value.
  4. What happens if I don’t pay my personal property tax on time?

    • Late fees and penalties will be applied, and you may face legal consequences.


Understanding St. Louis County personal property tax might initially seem overwhelming, but being informed can simplify the process significantly. From knowing who is obligated to pay and how it’s calculated to being aware of key deadlines, this guide aims to be your go-to resource for all things related to personal property tax in St. Louis County.

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