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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%.

At an effective rate of 1.61%, a $447,000 home pays about $7,206 a year in property tax, $600 a month.

Property tax a year
$7,206
A month (for escrow)
$600
Effective rate on the home
1.61%

Property tax in Williamson County by home value, at 1.61%

Home valueA yearA month
$200,000$3,224$269
$300,000$4,836$403
$400,000$6,448$537
$500,000$8,060$672
$750,000$12,090$1,008
$1,000,000$16,120$1,343

Williamson County against Texas and the US

Effective rateMedian taxMedian home valueMedian household income
Williamson County1.61%$7,205$447,000$111,340
Texas1.49%$4,232$283,800$78,476
United States0.94%$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.

What it assumes

  • Cities, school districts and special districts within the county levy different rates, so bills vary within it.
  • Survey figures cover 2020 to 2024 and lag recent reassessments.

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

Related calculators

  • Texas Property Tax CalculatorTexas homeowners pay a median $4,232 a year in property tax, 1.49% of a median $283,800 home: the 7th highest effective rate of the 50 states and DC.
  • Texas Mortgage CalculatorYour monthly mortgage payment in Texas, with Texas's effective property tax rate (1.49%) built in, at this week's average rate. The calculator starts at the state's median home value, $283,800.
  • Home Affordability CalculatorThe home price your income supports under the 28/36 guideline lenders use, counting your other debts, down payment, taxes and insurance, at this week's average rate.

Sources

Updated by the RateHerald team. The maths is tested against worked examples; report a problem.