Home and mortgage
Williamson County, TX Property Tax Calculator
Williamson County homeowners pay a median $7,205 a year in property tax, 1.61% of a median $447,000 home: above Texas's 1.49% and the national 0.94%.
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Property tax in Williamson County by home value, at 1.61%
| Home value | A year | A month |
|---|---|---|
| $220,000 | $3,546 | $296 |
| $340,000 | $5,481 | $457 |
| $450,000 | $7,254 | $605 |
| $670,000 | $10,800 | $900 |
| $890,000 | $14,347 | $1,196 |
Williamson County against Texas and the US
| Effective rate | Median tax | Median home value | Median household income | |
|---|---|---|---|---|
| Williamson County | 1.61% | $7,205 | $447,000 | $111,340 |
| Texas | 1.49% | $4,232 | $283,800 | $78,476 |
| United States | 0.94% | $3,119 | $332,700 | $80,734 |
How this calculator works
Median real estate taxes paid ÷ median home value in Williamson County, from the Census Bureau's American Community Survey 2020–2024 5-year estimates. The calculator starts at the county's median home value and rate.
Questions people ask
What is the property tax rate in Williamson County?
The effective rate is 1.61%: a median $7,205 a year on a median $447,000 home. That's the 13th highest of the 71 Texas counties we cover.
How much is property tax on a $400,000 house in Williamson County?
About $6,448 a year, $537 a month, at the county's effective rate, before any exemption.
How does Williamson County compare with the rest of Texas?
Its rate is above the state's 1.49%. Across Texas, covered counties range from 0.83% to 2.03%.
How do I lower my Williamson County property tax?
Apply for every exemption you qualify for, such as a homestead exemption, and appeal your assessment if it is higher than comparable homes sold nearby; the county assessor explains the deadlines.
Other Texas counties
- El Paso County
- Fort Bend County
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Updated by the RateHerald team. The maths is tested against worked examples; report a problem.