Merton, WI Sales Tax Rate

The combined sales tax rate in Merton, Wisconsin is 5% (5% state). Calculate the sales tax on any purchase in Merton. Rates effective September 2023.

State tax

5%

County tax (Waukesha)

0%

City tax (Merton)

0%

Special district tax

0%

Combined rate

5%

Source: Wisconsin: Streamlined Sales Tax rate and boundary files (WIR2026Q4AUG17.csv), rates in effect October 1, 2026. Effective September 2023.