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South Carolina Your Business Partner for All Things Sales Tax

South Carolina Sales Tax Guide for Online Sellers

Prepared by Sales Tax Helper

Table of Contents

  1. Introduction
  2. Nexus Considerations
  3. General Rules and Compliance Considerations
  4. Registration, Collection, and Sourcing Rules
  5. Collection, Rates, and Remittance
  6. Pitfalls and Risks
  7. International Sellers
  8. Audit Considerations
  9. Voluntary Disclosure Agreements (VDAs)
  10. Conclusion
  11. References & Resources

1. Introduction

Purpose of This Guide

This comprehensive guide is designed specifically for online sellers conducting business in
South Carolina. Whether you're an Amazon seller, direct-to-consumer brand, marketplace seller, international shipper, or e-commerce retailer, understanding South Carolina's sales tax
obligations is critical for your business success and compliance.

South Carolina's sales tax landscape has evolved significantly since the 2018 Wayfair decision,
creating new responsibilities for online sellers. The state implemented economic nexus
thresholds effective November 1, 2018, marketplace facilitator laws effective April 26, 2019, and specific requirements for remote sellers that can trigger substantial compliance obligations. These rules apply to all online sales channels, from major marketplaces like Amazon and eBay to your own e-commerce website.

This guide will help you navigate South Carolina's sales tax requirements, understand when you must register and collect tax, avoid common compliance pitfalls, and protect your business from costly penalties and audit exposure.

Why This Matters

South Carolina actively enforces sales tax obligations for online sellers, and the financial stakes are substantial. The state has been particularly aggressive in pursuing marketplace facilitators and remote sellers, including high-profile litigation with major platforms. Criminal penalties are possible for failure to collect and remit sales tax, as collected sales tax belongs to the state, not your business. Severe financial exposure can result from penalties and interest charges, business disruption through tax liens and asset seizure, and personal liability where business owners and officers can be held personally responsible for unpaid sales tax.

Common risks for online sellers include economic nexus through $100,000 in gross revenue
from South Carolina sales, inventory nexus through fulfillment centers like Amazon FBA,
marketplace confusion about collection responsibilities, failing to register after crossing the
economic nexus threshold, mixing marketplace and direct sales without proper tax management, and underestimating the state's aggressive enforcement approach.

The good news is that with proper understanding and compliance systems, you can protect your business while taking advantage of South Carolina's growing market opportunity. This guide provides the roadmap to get you there, and the following sections will walk you through every aspect of South Carolina sales tax for online sellers, with practical examples and direct links to official state resources.

Ready to ensure compliance? The following sections will walk you through every aspect of
South Carolina sales tax for online sellers, with practical examples and direct links to official
state resources.

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  • State- and industry-specific insights and compliance tips
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