For 2026, the sales tax rate in Williamson County, Tennessee stands at 9.75% — a combination of the 7% state rate and 2.75% local levy. The county's 247,726 residents make it an important market in the region.
For a $500 purchase in Williamson County, the sales tax would be $48.75, bringing the total to $548.75.
Business Compliance in Williamson County
Businesses must register with the Tennessee Department of Revenue to collect and remit sales tax. Filing frequency depends on sales volume. With a population of 247,726, Williamson County offers significant market potential for businesses of all sizes.