St. Tammany County, Louisiana Property Taxes
Property Taxes in St. Tammany County, Louisiana
Median St. Tammany County effective property tax rate: 0.96%, significantly lower than the national median of 1.02%.
Median St. Tammany County home value: $209,340
Median annual St. Tammany County tax bill: $2,058, lower than the national median property tax bill of $2,400.
How are property taxes in St. Tammany County calculated?
Property taxes in St. Tammany County are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Understanding your county's property tax system, exemptions, and reduction opportunities can lead to significant savings. Whether you live in St. Tammany County or another part of St. Tammany County, knowing local tax details benefits homeowners and investors.
St. Tammany County’s median property tax rate is 0.96%, which is lower than the state median tax rate of 0.92% and below the national median of 1.02%. The median annual tax bill is $2,058, which is lower than the national median property tax bill of $2,400.
Last Updated April 13, 2026
St. Tammany County, Louisiana Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
0.96%
Estimate Property Tax Bill
$2,010
$1,865
How Does the St. Tammany County Property Tax Calculator Work?
Use this St. Tammany County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies St. Tammany County's median effective tax rate of 0.96% to generate your estimate.
Enter your property's estimated assessed value — the figure the appraisal district assigns for tax purposes, which is typically lower than market value after applicable exemptions. Our calculator uses the median effective rate for a more accurate estimate than the statutory millage rate alone.
Your actual bill may vary based on your specific exemptions, local school district levies, and any special assessment districts that apply to your property. St. Tammany County's median property tax bill is $2,058, which is $342 lower than the state median and below the national median property tax bill of $2,400.
For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across St. Tammany County.
Property Tax Rates Across St. Tammany County, Louisiana
What Are Effective Property Tax Rates Across St. Tammany County?
Local government entities set tax rates, which vary widely across St. Tammany County. Each year, the county estimates its budget for public services and divides that total by the assessed value of all taxable property within its jurisdiction.
Below, compare St. Tammany County's effective property tax rate to other counties in Louisiana or the U.S. median of 1.02%.
St. Tammany County's median effective rate stands at 0.96%, which is lower than the national median of 1.02%. Within St. Tammany County, the highest rate is found in SLIDELL at 0.98%, while TALISHEEK has the lowest at 0.89%.
These variations reflect differences in local school district levies, special assessment districts assessments, and special district bonds — which compound the base county rate.
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective St. Tammany County Tax Rate
0.96%
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Louisiana Tax Rate
0.92%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across St. Tammany County, Louisiana
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Abita Springs | 0.56% | 0.77% | 0.92% | 1.11% | 1.33% |
| Bogalusa | 0.29% | 0.57% | 0.90% | 1.31% | 1.31% |
| Bush | 0.41% | 0.71% | 0.94% | 1.14% | 1.31% |
| Covington | 0.56% | 0.74% | 0.92% | 1.10% | 1.21% |
| Folsom | 0.44% | 0.69% | 0.92% | 1.26% | 1.28% |
| Franklinton | 0.25% | 0.57% | 0.91% | 1.26% | 1.28% |
| Lacombe | 0.39% | 0.64% | 0.90% | 1.26% | 1.43% |
| Madisonville | 0.74% | 0.85% | 0.94% | 1.07% | 1.20% |
| Mandeville | 0.63% | 0.82% | 0.98% | 1.13% | 1.26% |
| Pearl River | 0.27% | 0.59% | 0.90% | 1.14% | 1.35% |
| Slidell | 0.36% | 0.72% | 0.98% | 1.33% | 1.56% |
| Talisheek | 0.29% | 0.40% | 0.89% | 1.17% | 1.17% |
| Sun | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across St. Tammany County, Louisiana
When examining property taxes in St. Tammany County, understanding the distinction between "market value" and "assessed value" is crucial.
The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The St. Tammany Parish Assessor estimates the market value for tax purposes.
The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.
Assessment notices:
In St. Tammany County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of May.
Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in St. Tammany County.
For example, the median tax bill in St. Tammany County is $2,058, compared with the national median property tax bill of $2,400. Tax bills range significantly across the county, with Madisonville at the highest median home price at $294,872.
Property Tax Assessment Values Across St. Tammany County, Louisiana
Source: Ownwell
$89,135
$192,004
$294,872
Median St. Tammany County Market Value
$209,340
Median Louisiana Market Value
$118,642
Median United States Market Value
$235,294
Property Tax Assessment Values Across St. Tammany County, Louisiana
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Abita Springs | $81,322 | $141,982 | $192,402 | $261,099 | $383,673 |
| Bogalusa | $24,238 | $44,776 | $89,135 | $150,454 | $213,068 |
| Bush | $47,381 | $89,546 | $174,797 | $285,682 | $398,339 |
| Covington | $103,146 | $156,911 | $233,318 | $346,754 | $499,084 |
| Folsom | $54,867 | $104,230 | $179,455 | $279,100 | $388,797 |
| Franklinton | $39,731 | $65,972 | $126,669 | $214,190 | $327,052 |
| Lacombe | $47,210 | $101,266 | $158,101 | $239,595 | $338,252 |
| Madisonville | $142,766 | $224,164 | $294,872 | $386,368 | $520,993 |
| Mandeville | $132,072 | $177,898 | $263,858 | $371,014 | $527,633 |
| Pearl River | $46,843 | $86,624 | $157,785 | $253,964 | $333,830 |
| Slidell | $84,167 | $125,088 | $175,790 | $255,032 | $344,537 |
| Talisheek | $65,272 | $83,060 | $110,496 | $160,246 | $257,355 |
| Sun | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across St. Tammany County, Louisiana
Property tax bills in St. Tammany are based on the assessed value of a home, which is then multiplied by the local tax rate. That means the market value of the property, along with any exemptions or local taxing decisions, can affect what a homeowner owes each year. With a median home price of $209,340, tax bills can vary widely across the county depending on location and property characteristics.
For many homeowners, the bill is a meaningful part of annual housing costs. The 25th percentile tax bill is $1,152, while the 75th percentile reaches $3,286, showing how much taxes can differ from one property to another. At the high end, the 90th percentile tax bill is $4,866. Madisonville has the highest median tax bill at $2,854, while Bogalusa has the lowest at $810.
Median St. Tammany County Tax Bill
$2,058
Median Louisiana Tax Bill
$995
Median United States Tax Bill
$2,400
Property Tax Bills Across St. Tammany County, Louisiana
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Abita Springs | $589 | $1,200 | $1,850 | $2,765 | $4,148 |
| Bogalusa | $176 | $411 | $810 | $1,426 | $2,193 |
| Bush | $380 | $819 | $1,735 | $3,050 | $4,500 |
| Covington | $678 | $1,281 | $2,169 | $3,536 | $5,358 |
| Folsom | $383 | $853 | $1,750 | $2,906 | $4,329 |
| Franklinton | $266 | $472 | $1,361 | $2,389 | $3,668 |
| Lacombe | $338 | $751 | $1,471 | $2,532 | $3,834 |
| Madisonville | $1,293 | $2,024 | $2,854 | $4,022 | $5,550 |
| Mandeville | $934 | $1,606 | $2,586 | $3,947 | $5,913 |
| Pearl River | $218 | $634 | $1,430 | $2,593 | $3,658 |
| Slidell | $325 | $957 | $1,783 | $2,871 | $4,274 |
| Talisheek | $357 | $479 | $974 | $1,653 | $3,090 |
| Sun | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | September 15 |
Links | |
|---|---|
| St. Tammany Tax Assessor | |
| Website | arist.stassessor.org |