Watertown, South Dakota Sales Tax Calculator (2026)
6.20% total combined rate — includes state and local taxes.
Watertown applies a total 6.2% sales tax, combining the 4.2% state rate and a 2% local rate.
Watertown Sales Tax Calculator
Enter a purchase amount — we’ll calculate the total with Watertown’s tax rate.
Rate
6.20%
Tax
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Total
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The current combined rate for Watertown is 6.20%.
Watertown Sales Tax Breakdown
- State Rate: 4.20%
- City Rate: 2.00%
- County Rate: 0.00%
- Special Rate: 0.00%
- Total: 6.20%
About Watertown
Watertown’s local tax revenue supports parks, recreation, and business development in Codington County.