How are property tax rates determined in Missouri?

Property tax rates in Missouri are set by each taxing district (municipality, school district, park district, library, etc.) based on their annual levy (the amount of tax revenue they need). The rate is calculated by dividing the levy by the total assessed value of all property in the district.

What is the composite tax rate?

The composite tax rate is the sum of all overlapping taxing district rates that apply to a specific property. A typical property may be taxed by several overlapping districts. The composite rate determines your total tax bill when multiplied by your property's assessed value.

Why do tax rates vary within the same town?

Properties within the same municipality can have different composite rates because overlapping districts (school, park, fire, library) have different boundaries. A home in one school district may have a different rate than a home two blocks away in a different school district.

St. Mary, MO Property Tax Rate 2026 — Full Breakdown by District

Showing latest tax year with year-over-year changes. Full rate history available with a paid plan. View plans →

Property Tax — Tax Year 2025 (payable 2026)i

MO DOR

Composite Ratei

6.0956%-0.8%YoY

Municipal Portioni

0.9867%-1.2%YoY16.2% of total

Effective Ratei

1.16%

Est. Annual Taxi

$1K$116/mo

Median Home Valuei

$120,000

Rate Trend — click a year to explorei

20242025

Municipal

Other Districts

Where Your Tax Dollar Goesi

$0.48 Ste. Genevieve County R-II SD - Operating Funds-Schools

$0.16 City of St. Mary - General Revenue

$0.08 Ste. Genevieve County R-II SD - Debt Service

$0.05 Mineral Area College - General Revenue

$0.05 Jefferson College - General Revenue

$0.04 Ste. Genevieve County - General Revenue

$0.04 Ste. Genevieve County - Road & Bridge

$0.03 Ste. Genevieve County - Hospital

$0.02 Mineral Area College - Debt Service

$0.01 Ste. Genevieve County - Mental Health

$0.01 Ste. Genevieve County - Developmental Dis. Board

$0.01 Ste. Genevieve County - Ambulance

$0.01 Ste. Genevieve County - Senior Services

Estimated Tax by Home Valuei

$50K

$579

$48/mo

$100K

$1,158

$97/mo

$150K

$1,737

$145/mo

$200K

$2,316

$193/mo

$250K

$2,895

$241/mo

$300K

$3,474

$290/mo

$350K

$4,054

$338/mo

Highlighted value is closest to median home value ($120K)

13 Overlapping Taxing Districtsi

Ste. Genevieve County R-II SD - Operating Funds-Schools

48.3%2.9450%

City of St. Mary - General Revenuei

16.2%0.9867%

Ste. Genevieve County R-II SD - Debt Service

7.6%0.4605%

Mineral Area College - General Revenue

5.3%0.3223%

Jefferson College - General Revenue

5.1%0.3084%

Ste. Genevieve County - General Revenuei

4.2%0.2560%

Ste. Genevieve County - Road & Bridgei

4%0.2439%

Ste. Genevieve County - Hospitali

2.6%0.1567%

Mineral Area College - Debt Service

2.1%0.1300%

Ste. Genevieve County - Mental Healthi

1.5%0.0933%

Ste. Genevieve County - Developmental Dis. Boardi

1.5%0.0933%

Ste. Genevieve County - Ambulancei

1.2%0.0704%

Ste. Genevieve County - Senior Servicesi

0.5%0.0291%