🟡 Yes, South Carolina does tax SaaS at a state rate of 6%. Here's what SaaS founders and freelancers need to know about selling software to customers in South Carolina.
South Carolina taxes SaaS as a communication service.
If you sell SaaS products to customers in South Carolina, you may need to collect and remit sales tax at 6% (plus any applicable local taxes). This applies whether your business is based in South Carolina or elsewhere — what matters is whether you have economic nexus in the state.
Following the 2018 South Dakota v. Wayfair Supreme Court decision, South Carolina can require out-of-state sellers to collect sales tax if they meet certain thresholds. The most common thresholds are $100,000 in sales or 200 transactions per year in the state, though South Carolina's specific rules may vary.
This means even if your business is in Ireland, Germany, or another country entirely, you may need to register for sales tax in South Carolina if your sales exceed the nexus threshold.
1. Determine nexus: Track your sales volume to South Carolina customers
2. Register: Apply for a sales tax permit with South Carolina's tax authority
3. Collect: Add 6% to invoices for South Carolina customers
4. File & remit: Submit periodic returns (monthly, quarterly, or annually depending on volume)
If you're selling from outside the US (EU, UK, or elsewhere) to customers in South Carolina:
You may still need to register and collect South Carolina sales tax if you exceed the economic nexus thresholds. Being a foreign company does not exempt you from US state sales tax obligations.
Yes. South Carolina taxes SaaS (Software as a Service) at a state rate of 6%. South Carolina taxes SaaS as a communication service.
The state sales tax rate in South Carolina is 6%. Local taxes may apply on top of this, varying by county and city.
Yes. Most states, including South Carolina, follow economic nexus rules established by the 2018 South Dakota v. Wayfair Supreme Court decision. Typically, you establish nexus if you exceed $100,000 in sales or 200 transactions in the state per year. Check South Carolina's specific thresholds.
Include 6% sales tax on your invoice for SaaS products sold to customers in South Carolina. Show the tax as a separate line item. Use our free invoice generator at paytaxfa.st to create compliant invoices.
Potentially, yes. If you have economic nexus in South Carolina (typically $100K+ in sales), you may need to register, collect, and remit South Carolina sales tax even as a foreign seller. Consult a US tax professional for your specific situation.
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