WILLIAMSON Sales Tax Overview
As of 2026, WILLIAMSON, Texas has an average combined sales tax rate of 8.25%, with rates varying across 6 zip codes from 8.25% to 8.25%. This rate includes the Texas state tax of 6.25% plus applicable county and local taxes.
Different areas within WILLIAMSON may have different rates due to special tax districts, transit authority taxes, or other local levies. It is important to use your exact zip code when calculating taxes for purchases, business filings, or compliance purposes.
WILLIAMSON Tax Examples
* Based on average rate of 8.25%. Verify with your exact zip code.
WILLIAMSON Zip Codes & Tax Rates
Frequently Asked Questions
What is the sales tax rate in WILLIAMSON, TX?
The average sales tax rate in WILLIAMSON, TX is 8.25% as of 2026. This includes the 6.25% Texas state tax plus any county and city taxes.
How many zip codes are in WILLIAMSON, TX?
WILLIAMSON, TX has 6 zip codes in our database: 76511, 76530, 76577, 76578, 78615 and 1 more.
How much is sales tax on a $100 purchase in WILLIAMSON?
On a $100 purchase in WILLIAMSON, TX you would pay approximately $8.25 in sales tax at the average rate of 8.25%, for a total of $108.25.
Is WILLIAMSON's sales tax rate higher than the Texas average?
Use our calculator to compare WILLIAMSON's rate of 8.25% against other cities in Texas. Visit the Texas state page for the statewide average.