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

State	Jurisdiction	Type	Effective Date	Prior Rate	New Rate	Change
SC	Williamsburg County	County (Capital Projects tax)	5/1/2026	7.00%	8.00%	+1.00
SC	Aiken County	County (Capital Projects tax)*	5/1/2026	8.00%	8.00%	+0.00
MO	Maries County	County (Emergency Services tax)	5/1/2026	~5.89%	~6.89%	+1.00
MO	Maries-Osage Ambulance Dist.	Special District (Ambulance)	5/1/2026	~6.39%	~7.39%	+1.00
MO	St. James Ambulance Dist.	Special District (Ambulance)	5/1/2026	~6.89%	~7.89%	+1.00
MO	Dixon Ambulance Dist.	Special District (Ambulance)	5/1/2026	~6.39%	~7.39%	+1.00
MO	Argyle (Maries County)	City	5/1/2026	~7.39%	~8.39%	+1.00
MO	Belle (Maries County)	City	5/1/2026	~7.89%	~8.89%	+1.00
MO	Brinktown (Maries County)	City/Community	5/1/2026	~6.39%	~7.39%	+1.00
MO	High Gate (Maries County)	City/Community	5/1/2026	~5.89%	~6.89%	+1.00
MO	Vichy (Maries County)	City/Community	5/1/2026	~5.89%	~6.89%	+1.00
MO	Vienna (Maries County)	City	5/1/2026	~8.39%	~9.39%	+1.00