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Local Sales Tax, Sales Tax Updates

Sales Tax Rate Changes Effective May 2026

By Ali Walker

April 16, 2026

May is typically a quieter month for sales tax rate changes. Most updates occur at the start of a new quarter—January, April, July, and October—when states and local jurisdictions align effective dates.

That said, there are a small number of local sales tax rates being updated May 1, 2026 that businesses should account for.

Summary

No statewide sales tax rate changes are effective May 1, 2026.

Local sales tax rate increases are limited to:

All identified changes are county-level or district-level additions.

Jurisdictions With Rate Changes — May 2026

StateJurisdictionTypeEffective DatePrior RateNew RateChange
SCWilliamsburg CountyCounty (Capital Projects tax)5/1/20267.00%8.00%+1.00
SCAiken CountyCounty (Capital Projects tax)*5/1/20268.00%8.00%+0.00
MOMaries CountyCounty (Emergency Services tax)5/1/2026~5.89%~6.89%+1.00
MOMaries-Osage Ambulance Dist.Special District (Ambulance)5/1/2026~6.39%~7.39%+1.00
MOSt. James Ambulance Dist.Special District (Ambulance)5/1/2026~6.89%~7.89%+1.00
MODixon Ambulance Dist.Special District (Ambulance)5/1/2026~6.39%~7.39%+1.00
MOArgyle (Maries County)City5/1/2026~7.39%~8.39%+1.00
MOBelle (Maries County)City5/1/2026~7.89%~8.89%+1.00
MOBrinktown (Maries County)City/Community5/1/2026~6.39%~7.39%+1.00
MOHigh Gate (Maries County)City/Community5/1/2026~5.89%~6.89%+1.00
MOVichy (Maries County)City/Community5/1/2026~5.89%~6.89%+1.00
MOVienna (Maries County)City5/1/2026~8.39%~9.39%+1.00

* Although Aiken County reimposes its 1% capital-projects tax on 5/1/2026, its combined rate remains 8.00%.

Tags: local sales tax sales tax rates state and local sales tax

Ali Walker

Ali Walker is the primary writer and researcher for SalesTaxSolutions.US, specializing in U.S. sales and use tax compliance, economic nexus laws, SaaS and digital goods taxation, marketplace facilitator rules, and multistate sales tax updates. Her work focuses on helping businesses understand changing state and local sales tax requirements across the United States.

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