Slidell, St. Tammany County, Louisiana Property Taxes
Property Taxes in Slidell, Louisiana
Median Slidell, Louisiana effective property tax rate: 0.98%, lower than the national median of 1.02%, and higher than the Louisiana state median of 0.92%.
Median Slidell, Louisiana home value: $175,790
Median annual Slidell, Louisiana tax bill: $1,783, lower than the national median property tax bill of $2,400.
How are property taxes in St. Tammany calculated?
Property taxes in Slidell, Louisiana 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 Slidell's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Slidell, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Slidell, St. Tammany County, Louisiana Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
0.98%
Estimate Property Tax Bill
$1,723
$1,599
How Does the Slidell Property Tax Calculator Work?
Use this Slidell property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Slidell's median effective tax rate of 0.98% — based on actual property records in St. Tammany County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local appraisal district uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Slidell's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.
Your bill may vary by ZIP code within Slidell: rates range from $1,238.00 in 70460 to $2,382.00 in 70461, primarily due to differences in school district levies and local assessment districts.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Slidell.
About Slidell Property Taxes
About Property Taxes in Slidell, St. Tammany, Louisiana
Slidell’s median effective property tax rate of 0.98% is higher than the Louisiana state median of 0.92% and lower than the national median of 1.02%. This rate reflects the St. Tammany County base levy combined with local school district levies and special assessment districts that vary by subdivision throughout the city.
Property tax rates are not uniform across Slidell. Homeowners in the 70461 ZIP code carry a median effective rate of 1.02%, while those in 70460 pay 0.82%. This spread — 0.20 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across St. Tammany County. Understanding which part of Slidell you live in can make a meaningful difference to your annual tax bill.
Slidell homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before the August 15, 2026 deadline each year.
If your estimated bill above seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.
Property Tax Rates Across Slidell, St. Tammany County, Louisiana
As noted earlier, local government entities set tax rates, which can vary widely within a state.
Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.
While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.
Below, you can compare Slidell's effective property tax rate to other cities in Louisiana and the median property tax rates in Louisiana and the U.S.
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 Slidell Tax Rate
0.98%
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%
Median Effective Louisiana Tax Rate
0.92%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Slidell, St. Tammany County, Louisiana
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 70458 | 0.42% | 0.77% | 1.01% | 1.32% | 1.57% |
| 70460 | 0.18% | 0.54% | 0.82% | 1.32% | 1.35% |
| 70461 | 0.51% | 0.83% | 1.02% | 1.34% | 1.51% |
Source: Ownwell
Property Tax Assessment Values Across Slidell, St. Tammany County, Louisiana
When examining property taxes in Slidell, Louisiana, 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 County appraisal district 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 are sent in the spring each year and 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. The median home price in Slidell is $175,790, with tax bills ranging significantly across the county. Zip code 70461 has the highest median home price at $222,458.
Property Tax Assessment Values Across Slidell, St. Tammany County, Louisiana
Source: Ownwell
$89,135
$192,004
$294,872
Median Slidell Market Value
$175,790
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 Slidell, St. Tammany County, Louisiana
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 70458 | $83,946 | $120,732 | $163,852 | $244,190 | $348,306 |
| 70460 | $66,000 | $103,671 | $142,290 | $197,983 | $251,550 |
| 70461 | $112,245 | $162,220 | $222,458 | $294,947 | $391,877 |
Source: Ownwell
Property Tax Bills Across Slidell, St. Tammany County, Louisiana
Property tax bills in Slidell are calculated by applying the local tax rate to a home’s assessed value, which is based on the market value of the property. The assessed value is then adjusted by any exemptions or special rules that may reduce the taxable amount. For homeowners, this means the final bill can vary even among similar homes, depending on location, property characteristics, and eligibility for relief.
With a median home price of $175,790, tax bills in the city can differ widely. The 25th percentile tax bill is $957, while the 75th percentile reaches $2,871. At the higher end, the 90th percentile tax bill is $4,274. The highest median tax bill is $2,382 in ZIP code 70461, compared with $1,238 in ZIP code 70460.
Because property taxes are tied to assessed value, homeowners may see changes when market conditions shift or when assessments are updated.
Median Slidell Tax Bill
$1,783
Median St. Tammany County Tax Bill
$2,058
Median Louisiana Tax Bill
$995
Median United States Tax Bill
$2,400
Property Tax Bills Across Slidell, St. Tammany County, Louisiana
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 70458 | $383 | $1,005 | $1,750 | $2,716 | $3,982 |
| 70460 | $127 | $603 | $1,238 | $1,940 | $2,686 |
| 70461 | $563 | $1,397 | $2,382 | $3,750 | $5,016 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | September 15 |
Links | |
|---|---|
| St. Tammany Tax Assessor | |
| Website | arist.stassessor.org |