Property tax on a $400,000 home in Jefferson County, MO
Official source data 2024
On a $400,000 home in Jefferson County
$3,214
estimated annual property tax
ACS 2020-2024 ratio of medians. This estimate does not use your parcel’s assessment or district tax rates.
Make it your number.
Your actual bill depends on your local assessment, exemptions, and taxing districts.
A home value. A yearly budget.
These scenarios use the same 0.80% effective rate. They do not predict an individual tax assessment.
| Home value | Annual estimate | Monthly budget |
|---|---|---|
| $100,000 | $804 | $67 |
| $150,000 | $1,205 | $100 |
| $200,000 | $1,607 | $134 |
| $250,000 | $2,009 | $167 |
| $300,000 | $2,411 | $201 |
| $350,000 | $2,812 | $234 |
| $400,000 | $3,214 | $268 |
| $450,000 | $3,616 | $301 |
| $500,000 | $4,018 | $335 |
| $600,000 | $4,821 | $402 |
| $750,000 | $6,027 | $502 |
| $1,000,000 | $8,035 | $670 |
| $1,250,000 | $10,044 | $837 |
| $1,500,000 | $12,053 | $1,004 |
| $1,750,000 | $14,062 | $1,172 |
| $2,000,000 | $16,071 | $1,339 |
The county context.
Rank runs from highest to lowest among counties with usable ACS medians. County medians may describe different households and cannot replace parcel-level figures.
Neighboring counties
| County | Effective rate | Same-value estimate | Median tax paid |
|---|---|---|---|
| St. Louis County, MO | 1.20% | $4,819 | $3,335 |
| Franklin County, MO | 0.80% | $3,186 | $1,813 |
| St. Francois County, MO | 0.70% | $2,807 | $1,188 |
| Monroe County, IL | 1.63% | $6,505 | $4,588 |
Up to four adjacent counties with usable ACS medians, ordered by population. The 2026 Census adjacency file includes point contacts and boundaries in water.
What can change your bill?
The ACS effective rate is a ratio of medians, not a statutory rate. Local assessed values, levies, classification, caps and exemptions determine the actual bill.
Exemptions & assessment
No uniform flat exemption is applied. Enter your assessor-provided assessment ratio and qualifying exemption for a separate statutory scenario.
Payment dates & appeals
Ordinary annual property taxes are payable by December 31 and become delinquent afterward. An assessment appeal does not remove the payment obligation; ask the collector about payment under protest.
Start with the local Board of Equalization and its county filing date. A subsequent State Tax Commission complaint is ordinarily due September 30 or 30 days after the board decision, whichever is later; recently acquired property has an exception.
Check Missouri’s official property-tax guidance
Use an assessed value, exemption, and local millage
This separate scenario needs your assessor’s inputs. An exemption applies only to eligible levies; do not apply it to the county’s historical effective rate.
Good questions. Clear answers.
How much is property tax on a $400,000 home in Jefferson County?
The historical effective-rate estimate is $3,214 per year, or $268 a month. It multiplies $400,000 by 0.80%.
Is the effective rate the rate on my tax bill?
No. It is median real-estate taxes paid divided by median home value in the ACS 2020-2024 survey. Your taxing districts, assessed value, classification and exemptions determine your bill.
Can I subtract a homestead exemption from this estimate?
Use the separate statutory scenario with a qualifying levy. Subtracting an exemption from an ACS effective-rate estimate can double-count relief already reflected in taxes paid.
Does a higher purchase price change my assessment?
Assessment rules and reassessment dates vary by state and locality. Contact the linked official property-tax office before relying on a historical county ratio.
How do I appeal a property-tax assessment?
Read the deadline and procedure on your assessment notice, then use the official state guidance above to locate your assessor or review board. County survey data does not establish your appeal deadline.
Check the source.
Data as of 2024. Retrieved .
- www2.census.gov / Geos20245YR.txt
- www.census.gov / notes-on-acs-estimate-and-annotation-values.html
- www2.census.gov / acsdt5y2024-b01003.dat
- www2.census.gov / acsdt5y2024-b25077.dat
- www2.census.gov / acsdt5y2024-b25103.dat
- www2.census.gov / acsdt5y2024-b25064.dat
- www2.census.gov / acsdt5y2024-b19013.dat
- www2.census.gov / county_adjacency2026.txt As of 2026
- www.census.gov / county-adjacency.html As of 2026
- stc.mo.gov As of 2026-10-02
- stc.mo.gov / Property-Tax-Appeals-Before-The-STC-of-MO-Pamphlet-April-2018.pdf As of 2026-10-02
- stc.mo.gov / file-an-appeal As of 2026-10-02