Sebastian, Willacy County, Texas Property Taxes
Property Taxes in Sebastian, Texas
Median Sebastian, Texas effective property tax rate: 1.65%, significantly higher than the national median of 1.02%, and higher than the Texas state median of 1.48%.
Median Sebastian, Texas home value: $52,096
Median annual Sebastian, Texas tax bill: $869, $1,531 lower than the national median property tax bill of $2,400.
How are property taxes in Willacy calculated?
Property taxes in Sebastian, Texas 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 Sebastian's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Sebastian, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Sebastian, Willacy County, Texas Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.65%
Estimate Property Tax Bill
$860
$798
How Does the Sebastian Property Tax Calculator Work?
Use this Sebastian property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Sebastian's median effective tax rate of 1.65% — based on actual property records in Willacy 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 Sebastian'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 Sebastian: rates range from 1.65% in 78594 to 1.65% in 78594, 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 Sebastian.
About Sebastian Property Taxes
About Property Taxes in Sebastian, Willacy, Texas
Sebastian’s median effective property tax rate of 1.65% is higher than the Texas state median of 1.48% and higher than the national median of 1.02%. This rate reflects the Willacy County base levy combined with local school district levies and Municipal Utility Districts that can vary by subdivision throughout the city.
Property tax rates are not uniform across Sebastian. Homeowners in ZIP code 78594 carry a median effective rate of 1.65%, while those in the same ZIP code also pay 1.65%. This spread reflects how school district boundaries and local assessment districts are drawn across Willacy County. Understanding which part of Sebastian you live in can make a meaningful difference to your annual tax bill.
Sebastian homeowners who believe their assessed value is too high can file a formal appeal with the local Appraisal District before the May 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 Sebastian, Willacy County, Texas
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 Sebastian's effective property tax rate to other cities in Texas and the median property tax rates in Texas 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 Sebastian Tax Rate
1.65%
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 Willacy County Tax Rate
2.16%
Median Effective Texas Tax Rate
1.48%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Sebastian, Willacy County, Texas
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 78594 | 1.35% | 1.53% | 1.65% | 1.81% | 2.00% |
Source: Ownwell
Property Tax Assessment Values Across Sebastian, Willacy County, Texas
When examining property taxes in Sebastian, Texas, 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 Willacy 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 Willacy County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of April.
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 Sebastian.
For example, the median home price in Sebastian is $52,096, with tax bills ranging significantly across the county. 78594 has the highest median home price at $52,096.
Property Tax Assessment Values Across Sebastian, Willacy County, Texas
Source: Ownwell
$33,250
$70,608
$107,965
Median Sebastian Market Value
$52,096
Median Willacy County Market Value
$56,613
Median Texas Market Value
$258,851
Median United States Market Value
$235,294
Property Tax Assessment Values Across Sebastian, Willacy County, Texas
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 78594 | $21,550 | $34,025 | $52,096 | $76,030 | $103,648 |
Source: Ownwell
Property Tax Bills Across Sebastian, Willacy County, Texas
Property tax bills in Sebastian are based on the assessed value of a home and the local tax rates set by taxing authorities in Willacy County. The bill is calculated by applying those rates to the property’s assessed market value, so homes with higher values generally face higher taxes. For homeowners, this means the tax bill is tied not just to the house itself, but also to how local governments fund services through property taxes.
In Sebastian, the median home price is $52,096, and the median property tax bill is $869.00. That amount is below the national median property tax bill of $2,400, which can make the local burden feel more manageable. Still, bills can vary widely, with the 25th percentile at $550 and the 90th percentile at $1,793, depending on a home’s value and the applicable tax rates.
Median Sebastian Tax Bill
$869
Median Willacy County Tax Bill
$1,172
Median Texas Tax Bill
$3,441
Median United States Tax Bill
$2,400
Property Tax Bills Across Sebastian, Willacy County, Texas
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 78594 | $327 | $550 | $869 | $1,268 | $1,793 |
Source: Ownwell
Don't miss the deadline to protest!
Dates | |
|---|---|
| Appeal Deadline | June 1 |
Links | |
|---|---|
| Willacy Appraisal District | |
| Website | esearch.willacycad.org |