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Williamsburg County, SC sales tax rate increases to 8%

A new 1% Capital Projects Tax takes effect in Williamsburg County, South Carolina on May 1, 2026, raising the county’s combined sales tax rate from 7% to 8%. If you sell or deliver taxable goods to Williamsburg County customers, you’ll need to be collecting the new rate from day one.

Alex_Lamachenka_TaxCloud

Written by Alex Lamachenka

Head of DemandGen

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Key takeaways

  • Williamsburg County’s sales tax rate increases from 7% to 8% on May 1, 2026, due to a new 1% Capital Projects Tax
  • The accommodations tax rate also increases, from 8% to 9%
  • Unprepared foods are exempt from the new tax; the first return reflecting the new rate is due June 20, 2026

What changed

  • Previous rate: 7% combined sales tax in Williamsburg County
  • New rate: 8% combined sales tax in Williamsburg County
  • What changed: A new 1% Capital Projects Tax has been imposed by the county
  • Accommodations tax: Increases from 8% to 9%
  • First return due: June 20, 2026, covering the May 2026 reporting period

Who this affects

  • Retailers making sales and deliveries into Williamsburg County. You’re required to collect the new 8% rate on all taxable sales sourced to Williamsburg County starting May 1, 2026.
  • Remote sellers with Williamsburg County customers. If you sell taxable goods delivered to buyers in Williamsburg County, the new rate applies to those transactions.
  • Accommodation providers. The accommodations tax rate increases to 9%; update your billing accordingly.
  • Ecommerce sellers using platform integrations. Confirm your sales tax engine is applying the correct county-level rate for Williamsburg County transactions from May 1 onward.

Next steps for sellers

  • Verify that your sales tax calculations for Williamsburg County reflect the 8% rate starting May 1, 2026
  • File your May 2026 return using the new rate — it is due June 20, 2026
  • If you provide accommodations in Williamsburg County, update your billing to reflect the 9% accommodations tax rate

Official Source:

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