St. Louis property tax calculator 2026
In St. Louis, property tax for residential real estate is calculated from assessed value derived from market value. This calculator assumes residential property and applies the statutory 19% assessment ratio before multiplying by a combined rate per $100 of assessed value.
Estimates only. Loan terms and approval depend on lender underwriting.
Many U.S. counties use multiple local taxing authorities (county, city, school district, special districts). Enter your combined local millage rate as shown on your annual property tax notice.
Estimated property tax
Enter the market value to see the estimated annual property tax.
How it works
The City of St. Louis Assessor determines market value, defined as the price a property would bring in an open and competitive market. For residential real property, Missouri law requires assessment at 19% of true value in money. The assessed value is then multiplied by the applicable combined property tax rate, which is expressed as an amount per $100 of assessed value. The total rate reflects levies from the city, school district, and other authorized taxing districts.
Examples
If a residential home has a market value of 300,000, the assessed value would be 300,000 × 0.19, or 57,000. If the combined rate is 7.50 per 100 of assessed value, the estimated annual property tax would be 57,000 ÷ 100 × 7.50. The calculation changes only if a different combined rate applies to the parcel.
Limitations and important notes
This estimator assumes the property is residential and applies the 19% assessment ratio accordingly. It does not model commercial or agricultural classifications. The combined rate may include additional special district levies depending on parcel location within the City of St. Louis. Exemptions and relief programs are eligibility-based and are not automatically applied. The actual tax bill may differ from this estimate.
FAQs
What assessment ratio does this St. Louis calculator use?
The calculator assumes residential property and applies the 19% statutory assessment ratio to market value.
Is property tax in St. Louis based on assessed value?
Yes. Tax is calculated from assessed value, which for residential property equals 19% of market value.
How is the St. Louis property tax rate expressed?
The combined rate is stated as an amount per $100 of assessed value and includes levies from multiple taxing districts.
Does this calculator include exemptions?
No. Exemptions and relief programs depend on eligibility and are not automatically included in this estimated property tax.
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Calculations are simplified and for guidance only. Always double-check results and current rules with official sources or a qualified professional before making financial decisions.