Williamson County, Texas Property Taxes
Property Taxes in Williamson County, Texas
Median Williamson County effective property tax rate: 1.53%, significantly higher than the national median of 1.02%.
Median Williamson County home value: $408,017
Median annual Williamson County tax bill: $6,257, higher than the national median property tax bill of $2,400.
How are property taxes in Williamson County calculated?
Property taxes in Williamson 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 Williamson County or another part of Williamson County, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Williamson County, Texas Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.53%
Estimate Property Tax Bill
$6,243
$5,793
$774
Average Annual Tax Savings
How Does the Williamson County Property Tax Calculator Work?
Use this Williamson County property tax calculator to estimate your annual tax bill. Enter your property's assessed value and our calculator applies Williamson County's median effective tax rate of 1.53% — drawn from real transactions across the county — to generate your estimate.
Enter your property's estimated assessed value — the value the appraisal district assigns to your property, typically lower than market value after exemptions. Our calculator uses the median effective rate (actual bills divided by market value), which accounts for typical exemptions and is more accurate than applying the statutory millage rate directly.
Note: your assessed value reflects any exemptions you currently have. Rates vary across Williamson County — scroll down to explore city-level trends and find the rate specific to your area.
Williamson County's median effective tax rate is higher than the Texas median tax rate of 1.48%, and the county's median tax bill of $6,257 is higher than the state median tax bill by $3,857. If your estimate is higher than expected, Ownwell can protest your Williamson County assessment. Customers in the area saved an average of $774 last year.
Property Tax Rates Across Williamson County, Texas
What Are Effective Property Tax Rates Across Williamson County?
Local government entities set property tax rates, which can vary widely across Williamson 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 Williamson County’s effective property tax rate to other counties in Texas or the U.S. median of 1.02%.
Williamson County’s median effective rate stands at 1.53%, which is higher than the national median of 1.02%. Within Williamson County, the highest rate is found in Pflugerville at 2.06%, while Granger has the lowest at 1.17%.
These variations reflect differences in local school district levies, Municipal Utility Districts (MUDs) 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 Williamson County Tax Rate
1.53%
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 Texas Tax Rate
1.48%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Williamson County, Texas
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Austin | 0.82% | 1.34% | 1.55% | 1.74% | 1.98% |
| Bartlett | 0.34% | 0.57% | 1.35% | 2.32% | 2.32% |
| Cedar Park | 0.79% | 1.34% | 1.52% | 1.78% | 1.97% |
| Coupland | 0.15% | 0.34% | 1.17% | 1.66% | 1.86% |
| Elgin | 0.19% | 0.50% | 1.53% | 1.66% | 1.69% |
| Florence | 0.15% | 0.40% | 1.19% | 1.56% | 2.17% |
| Georgetown | 0.46% | 0.89% | 1.39% | 1.80% | 2.03% |
| Granger | 0.15% | 0.50% | 1.17% | 1.78% | 2.37% |
| Hutto | 1.02% | 1.47% | 1.71% | 2.16% | 2.16% |
| Jarrell | 1.14% | 1.62% | 1.88% | 2.06% | 2.35% |
| Leander | 1.02% | 1.43% | 1.65% | 2.02% | 2.19% |
| Liberty Hill | 0.68% | 1.26% | 1.61% | 1.98% | 2.30% |
| Pflugerville | 1.14% | 1.95% | 2.06% | 2.43% | 2.43% |
| Round Rock | 0.82% | 1.23% | 1.45% | 1.75% | 1.80% |
| Taylor | 0.34% | 0.75% | 1.45% | 2.12% | 2.12% |
| Thrall | 0.17% | 0.44% | 1.25% | 1.70% | 2.10% |
| Weir | 0.49% | 1.47% | 1.64% | 1.64% | 1.64% |
| Andice | N/A | N/A | N/A | N/A | N/A |
| Bertram | N/A | N/A | N/A | N/A | N/A |
| Burnet | N/A | N/A | N/A | N/A | N/A |
| Killeen | N/A | N/A | N/A | N/A | N/A |
| Lexington | N/A | N/A | N/A | N/A | N/A |
| Manor | N/A | N/A | N/A | N/A | N/A |
| Schwertner | N/A | N/A | N/A | N/A | N/A |
| Thorndale | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
$774
Average Annual Tax Savings
Save on Your Property Taxes and More With Ownwell
Property Tax Assessment Values Across Williamson County, Texas
When examining property taxes in Williamson 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 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 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. The median tax bill in Williamson County is $6,257, compared with the national median property tax bill of $2,400. Tax bills range significantly across the county, from $462 in Weir to $7,576 in Liberty Hill. Austin has the highest median home price at $473,027.
Property Tax Assessment Values Across Williamson County, Texas
Source: Ownwell
$34,594
$349,717
$664,840
Median Williamson County Market Value
$408,017
Median Texas Market Value
$258,851
Median United States Market Value
$235,294
Property Tax Assessment Values Across Williamson County, Texas
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Austin | $359,242 | $407,000 | $473,027 | $572,567 | $707,636 |
| Bartlett | $45,500 | $74,710 | $139,450 | $217,248 | $347,412 |
| Cedar Park | $328,396 | $368,492 | $446,174 | $571,984 | $726,993 |
| Coupland | $69,432 | $155,645 | $280,563 | $511,273 | $855,735 |
| Elgin | $100,215 | $164,444 | $324,921 | $548,728 | $859,419 |
| Florence | $65,078 | $139,210 | $259,378 | $500,636 | $817,956 |
| Georgetown | $279,738 | $347,399 | $424,434 | $567,214 | $754,083 |
| Granger | $55,000 | $102,162 | $196,411 | $340,340 | $613,416 |
| Hutto | $241,730 | $308,121 | $344,212 | $393,052 | $472,252 |
| Jarrell | $142,723 | $252,764 | $276,325 | $313,114 | $357,832 |
| Leander | $291,087 | $341,564 | $402,199 | $505,938 | $656,435 |
| Liberty Hill | $138,050 | $337,298 | $459,639 | $631,728 | $856,497 |
| Pflugerville | $78,000 | $213,112 | $349,882 | $392,257 | $505,570 |
| Round Rock | $302,269 | $350,434 | $419,972 | $526,582 | $666,129 |
| Taylor | $112,403 | $184,117 | $275,095 | $336,154 | $448,686 |
| Thrall | $65,627 | $136,662 | $243,584 | $360,660 | $721,897 |
| Weir | $17,859 | $20,875 | $34,594 | $73,929 | $229,614 |
| Andice | N/A | N/A | N/A | N/A | N/A |
| Bertram | N/A | N/A | N/A | N/A | N/A |
| Burnet | N/A | N/A | N/A | N/A | N/A |
| Killeen | N/A | N/A | N/A | N/A | N/A |
| Lexington | N/A | N/A | N/A | N/A | N/A |
| Manor | N/A | N/A | N/A | N/A | N/A |
| Schwertner | N/A | N/A | N/A | N/A | N/A |
| Thorndale | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
$774
Average Annual Tax Savings
Save on Your Property Taxes and More With Ownwell
Property Tax Bills Across Williamson County, Texas
Property tax bills in Williamson County are based on the assessed value of a home, not its market price alone. Local taxing authorities apply their rates to that assessed value, so the final bill depends on both the property’s valuation and the tax rates set by the county, schools, and other districts. For a home with a median price of $408,017, that calculation can lead to a wide range of annual bills, from $4,246 at the 25th percentile to $8,364 at the 75th percentile, with the 90th percentile reaching $10,749.
These bills can have a major impact on homeowners, especially when assessed values rise faster than expected. If your home is overvalued, you may pay more than necessary. Ownwell helps homeowners lower property tax bills by reviewing assessments, identifying savings opportunities, and filing appeals when a property is taxed above its fair value.
Median Williamson County Tax Bill
$6,257
Median Texas Tax Bill
$3,441
Median United States Tax Bill
$2,400
Property Tax Bills Across Williamson County, Texas
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Austin | $3,552 | $5,725 | $7,364 | $9,261 | $11,539 |
| Bartlett | $291 | $793 | $1,578 | $2,926 | $4,408 |
| Cedar Park | $2,973 | $5,160 | $7,028 | $9,105 | $11,449 |
| Coupland | $326 | $887 | $2,391 | $4,448 | $7,923 |
| Elgin | $475 | $1,300 | $2,886 | $5,380 | $8,157 |
| Florence | $244 | $868 | $2,405 | $4,663 | $7,366 |
| Georgetown | $1,532 | $3,348 | $5,716 | $8,270 | $11,142 |
| Granger | $280 | $852 | $1,792 | $3,695 | $5,616 |
| Hutto | $2,348 | $4,608 | $6,048 | $7,480 | $8,984 |
| Jarrell | $1,480 | $3,999 | $5,248 | $6,310 | $7,172 |
| Leander | $2,767 | $5,083 | $6,983 | $9,061 | $11,428 |
| Liberty Hill | $1,551 | $4,355 | $7,576 | $9,983 | $12,661 |
| Pflugerville | $1,547 | $1,931 | $7,176 | $8,990 | $10,786 |
| Round Rock | $3,109 | $4,609 | $6,226 | $8,111 | $10,147 |
| Taylor | $655 | $1,693 | $3,495 | $5,202 | $6,643 |
| Thrall | $354 | $944 | $2,266 | $4,133 | $5,869 |
| Weir | $238 | $315 | $462 | $932 | $2,443 |
| Andice | N/A | N/A | N/A | N/A | N/A |
| Bertram | N/A | N/A | N/A | N/A | N/A |
| Burnet | N/A | N/A | N/A | N/A | N/A |
| Killeen | N/A | N/A | N/A | N/A | N/A |
| Lexington | N/A | N/A | N/A | N/A | N/A |
| Manor | N/A | N/A | N/A | N/A | N/A |
| Schwertner | N/A | N/A | N/A | N/A | N/A |
| Thorndale | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
$774
Average Annual Tax Savings
Save on Your Property Taxes and More With Ownwell
Want to lower your Williamson County property taxes?
How Can I Lower My Property Taxes in Williamson County?
Looking to reduce your Williamson County property taxes? Ownwell is the leading property tax appeal company serving Williamson County. We specialize in helping property owners in the Round Rock area and beyond lower their tax bills by working directly with the Williamson Central Appraisal District.
Through our tax monitoring service, we collect all necessary information to maximize your tax reductions. We navigate the complexities of the Williamson County property tax appeal process and identify all available exemptions, so you don't have to.
Whether you are a homeowner, a real estate investor, or an asset manager, our local team at Ownwell has the expertise to assess your current property tax situation and find strategic opportunities for reducing your tax burden.
Property Tax Protests in Texas
Property tax protests in Williamson County begin when a homeowner believes the assessed value of the home is too high. The first step is to review the notice from the Appraisal District and compare the assessment to the home’s condition, size, features, and recent market activity. If the value appears inaccurate, the homeowner can file an appeal before the deadline of May 15, 2026.
The appeal process typically starts with submitting a protest and then presenting evidence that supports a lower assessed value. That evidence may include comparable sales, photos, repair estimates, or other details that show why the assessment should be reduced. The case is then reviewed through the county’s formal review process, and homeowners may have the chance to speak with the Appraisal Review Board, which listens to appeals and decides whether the assessment should change.
What can happen after an appeal? The board may lower the assessed value, keep it the same, or, in some cases, raise it if new information supports a higher value. A successful protest can reduce the property tax bill, while an unsuccessful one leaves the assessment unchanged. Because property taxes are based on assessed value, even a small adjustment can make a meaningful difference.
Ownwell helps homeowners navigate the appeal process by identifying opportunities to challenge an assessment, preparing the supporting evidence, and managing the filing and follow-up. That can save time and reduce the stress of handling the protest alone. For homeowners in Williamson County, where the tax rate is higher than the national median, appealing an inaccurate assessment can be an important way to help keep property taxes fair.
Exemptions in Texas
What property tax exemptions are available in Williamson County?
Homeowners in Williamson County may qualify for several property tax exemption programs, with the most important being the homestead exemption for a primary residence. This exemption is designed for owners who live in the home as their main residence, and it can help reduce the taxable value of the property. Other exemptions may be available for homeowners who are age 65 or older, disabled homeowners, and veterans or their surviving spouses, depending on eligibility.
The primary residence exemption is especially important because it protects the home you live in from being taxed as heavily as other properties. To qualify, the property must be the homeowner’s principal residence, and the owner must generally apply with the local appraisal district. Additional exemptions may also apply to school taxes and other local taxing units, depending on the homeowner’s situation.
How do homeowners apply for exemptions in Williamson County?
Homeowners can apply by submitting the required exemption forms to the Williamson County appraisal district and providing any supporting documents that prove eligibility. It is important to apply as soon as possible and to keep exemption records current if circumstances change.
How can Ownwell help with exemptions?
Ownwell helps homeowners identify which exemptions they may qualify for, prepare the application correctly, and make sure they do not miss valuable savings opportunities on their primary residence.
Available Exemptions
Senior
Disabled
Home Stead
Veteran
Solar/Wind
Non-Profit
Don't miss the deadline to protest!
Dates | |
|---|---|
| Appeal Deadline | May 15 |
| Tax Bill | |
| Issued | October 1 |
| Due Date #1 | January 31 |
Links | |
|---|---|
| Williamson Appraisal District | |
| Phone | (512) 930-3787 |
| Website | search.wcad.org |