De Soto, Williamson County, Illinois Property Taxes
Property Taxes in De Soto, Illinois
Median De Soto, Illinois effective property tax rate: 2.28%, significantly lower than the national median of 1.02%, and lower than the Illinois state median of 2.33%.
Median De Soto, Illinois home value: $39,090
Median annual De Soto, Illinois tax bill: $778, $1,622 lower than the national median property tax bill of $2,400.
How are property taxes in Williamson County calculated?
Property taxes in De Soto, Illinois 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 De Soto's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in De Soto, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
De Soto, Williamson County, Illinois Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
2.28%
Estimate Property Tax Bill
$891
$827
How Does the De Soto Property Tax Calculator Work?
Use this De Soto property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies De Soto's median effective tax rate of 2.28% — based on actual property records in Williamson 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 De Soto'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 De Soto: rates range from 2.28% in 62924 to 2.28% in 62924, 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 De Soto.
About De Soto Property Taxes
About Property Taxes in De Soto, Williamson, Illinois
De Soto’s median effective property tax rate of 2.28% is lower than the Illinois state median of 2.33% and higher than the national median of 1.02%. This rate reflects the Williamson County base levy combined with local school district levies and Special service areas (SSAs) that vary by subdivision throughout the city.
Property tax rates are not uniform across De Soto. Homeowners in the 62924 ZIP code carry a median effective rate of 2.28%, while those in the same ZIP code also pay 2.28%. This spread — 0.00 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Williamson County. Understanding which part of De Soto you live in can make a meaningful difference to your annual tax bill.
De Soto homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before the June 1, 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 De Soto, Williamson County, Illinois
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 De Soto's effective property tax rate to other cities in Illinois and the median property tax rates in Illinois 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 De Soto Tax Rate
2.28%
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 Williamson County Tax Rate
2.31%
Median Effective Illinois Tax Rate
2.33%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across De Soto, Williamson County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 62924 | 1.13% | 1.63% | 2.28% | 2.38% | 2.38% |
Source: Ownwell
Property Tax Assessment Values Across De Soto, Williamson County, Illinois
When examining property taxes in De Soto, Illinois, 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 Williamson 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:
In Williamson County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of the month when notices are sent.
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 De Soto.
For example, the median home price in De Soto is $39,090, with tax bills ranging significantly across the county. 62924 has the highest median home price at $39,090.
Property Tax Assessment Values Across De Soto, Williamson County, Illinois
Source: Ownwell
$28,710
$84,180
$139,650
Median De Soto Market Value
$39,090
Median Williamson County Market Value
$92,430
Median Illinois Market Value
$227,888
Median United States Market Value
$235,294
Property Tax Assessment Values Across De Soto, Williamson County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 62924 | $5,514 | $19,020 | $39,090 | $80,160 | $147,882 |
Source: Ownwell
Property Tax Bills Across De Soto, Williamson County, Illinois
De Soto property tax bills are calculated by applying the local tax rate to a home’s assessed value, which is based on the market value of the property. Local taxing authorities use that assessment to determine how much each homeowner owes, so the bill can vary depending on the home’s value and the tax rates in Williamson County.
With a median home price of $39,090, the typical tax burden in De Soto is relatively modest compared with the national median property tax bill of $2,400. Still, homeowners can see meaningful differences from one property to another. The 25th percentile tax bill is $279, while the 75th percentile reaches $1,502, and the 90th percentile climbs to $2,895.
These differences matter because property taxes affect monthly housing costs and long-term affordability. Even in the same city, a higher assessed value or a different tax rate can lead to a much larger bill.
Median De Soto Tax Bill
$778
Median Williamson County Tax Bill
$1,966
Median Illinois Tax Bill
$5,277
Median United States Tax Bill
$2,400
Property Tax Bills Across De Soto, Williamson County, Illinois
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 62924 | $106 | $279 | $778 | $1,502 | $2,895 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | June 1 |
Links | |
|---|---|
| Williamson Tax Assessor | |
| Website | williamsonil.devnetwedge.com |