Yes. A foreign or other out-of-state seller may have to collect South Carolina sales tax if it has physical presence in the state or meets the state’s economic-nexus test. The South Carolina Department of Revenue (SCDOR) sets the rules and requires remote sellers with nexus to obtain a South Carolina retail license, collect tax on taxable sales, and file returns.
For economic nexus, the key test is whether gross revenue from specified sales delivered into South Carolina exceeds $100,000 in the current or previous calendar year. The threshold includes taxable and exempt sales in the categories described below. South Carolina also has local option taxes that can affect the tax due by destination, while local jurisdictions do not administer their own sales tax. The state caps tax on certain large purchases, including vehicles, so the tax calculation is not always simply a percentage of the full purchase price.
When does a foreign seller have South Carolina economic nexus?
A foreign seller with no physical presence in South Carolina can still have economic nexus. The SCDOR says a remote seller has economic nexus when gross revenue from sales of tangible personal property, products transferred electronically, and services delivered into South Carolina exceeds $100,000 in either the current or previous calendar year. A seller with physical presence in the state may have nexus independently of this sales threshold.
The threshold is based on gross revenue, not just taxable sales or the amount of tax collected. It is important to monitor the relevant sales throughout both calendar years, including sales that may be exempt from tax. If your business has employees, inventory, contractors, or other activities in South Carolina, the economic threshold may not be the only nexus question; confirm your circumstances with the SCDOR or have a compliance professional review them.
Which sales count toward the $100,000 threshold?
The SCDOR’s remote-seller guidance includes gross revenue from tangible personal property delivered into South Carolina, products transferred electronically into the state, and services delivered into the state. For tangible personal property, the calculation includes taxable retail sales, exempt retail sales, and wholesale sales. For electronically transferred products and services, the SCDOR includes revenue whether or not the particular product or service is subject to sales tax.
Do not calculate the threshold by counting only taxable orders or only the sales on which you charged tax. Keep records that let you identify South Carolina destination sales by category and distinguish your own direct sales from marketplace transactions. Marketplace sales can also be relevant to the threshold calculation; the SCDOR’s marketplace guidance addresses revenue from products sold through a marketplace, including products owned by third-party sellers.
How to register for a South Carolina retail license
Remote sellers with South Carolina nexus must obtain a retail license from the SCDOR. The online registration system is MyDORWAY. The SCDOR also identifies a paper application for remote sellers, but online registration through MyDORWAY is the direct route for applying and managing the account.
Before applying, gather your business and ownership details, contact information, description of your sales activity, and the date your South Carolina nexus began. The SCDOR’s remote-seller materials identify a $50 application fee; check the current instructions and fee on the SCDOR website before submitting. A retail license is a state registration requirement, not a substitute for determining which products are taxable or which local taxes apply.
When must a remote seller begin collecting tax?
For a remote seller that establishes economic nexus, the SCDOR says the obligation to obtain a retail license and remit South Carolina sales and use tax begins on the first day of the second calendar month after economic nexus is established. This timing rule is tied to when the seller crosses the threshold, so maintain dated sales records and identify the month in which the threshold was exceeded.
Once the collection obligation begins, collect tax on taxable sales delivered into South Carolina and report the sales on the required returns. Do not assume that registration can wait until the end of the year or that marketplace collection automatically covers your direct orders. If the date you crossed the threshold or the start date is unclear, confirm it with the SCDOR before deciding when to begin collecting.
Which South Carolina sales are taxable or exempt?
South Carolina generally imposes sales tax on retail sales of tangible personal property unless a sale is specifically exempt or excluded. The state also taxes certain electronically transferred products and services, but taxability depends on the product or service and the applicable statutory treatment. A seller should classify each product and service rather than treating every order as taxable or every digital sale as exempt.
Exemptions may apply to particular buyers, products, or uses, and may require documentation. Keep valid exemption certificates and transaction records with your tax files. South Carolina’s state tax and applicable local option taxes can both affect the amount due. The state also caps tax on certain large purchases, including vehicles; do not apply a general cap to other products without confirming that the specific item qualifies under current SCDOR rules.
How local taxes affect South Carolina sellers
South Carolina is not a home-rule state for sales tax administration: local jurisdictions do not administer their own sales taxes. The SCDOR administers and collects applicable local sales and use taxes on behalf of local jurisdictions. However, local option taxes vary by county and can change the total tax due on a transaction.
For shipped orders, use the delivery destination to determine the applicable state and local treatment, and keep your product taxability and destination data accurate. Do not assume one statewide combined rate applies to every South Carolina customer. Because local taxes and special rules can change, verify the current treatment for the destination and product with the SCDOR.
How marketplace sales affect your obligations
South Carolina treats a marketplace facilitator with nexus as responsible for collecting and remitting state and applicable local sales and use tax on taxable sales made through its marketplace, including sales of products owned by third-party sellers, unless a sale is exempt or excluded. A marketplace facilitator’s own nexus test includes the relevant gross revenue from tangible personal property, electronically transferred products, and services delivered into South Carolina.
If you sell through a marketplace, check the marketplace’s transaction records to confirm which orders it collected and remitted tax on. Marketplace collection does not necessarily remove your responsibility for direct website sales, other channels, registration, or returns. The marketplace sales may also matter when assessing the economic-nexus threshold, so retain channel-level reports and confirm how your particular sales should be reported.
How to file and pay South Carolina sales tax
Registered sellers file South Carolina sales and use tax returns with the SCDOR, including through MyDORWAY. A return reports the seller’s sales and tax due for the filing period, with applicable state and local amounts accounted for. The SCDOR requires returns for each period assigned to the account, including periods with no South Carolina sales or no tax due.
Remote sellers generally file monthly, and the monthly return is due by the 20th day of the month following the month in which the sales occurred. This one varies by seller and by state, and it is the kind of detail we check for clients as part of the service — get in touch and we will confirm where you stand. Follow the filing frequency assigned by the SCDOR rather than changing it on your own. The SCDOR also requires electronic filing and payment when sales and use tax liability reaches its stated filing-period threshold; check the current instructions in MyDORWAY.
What to do about possible unfiled obligations
If you may have crossed the threshold, collected too little tax, or missed returns, first assemble your South Carolina sales by date, destination, product type, and sales channel. Include marketplace reports, direct orders, exemption records, tax collected, and any returns or payments already made. This information helps establish when nexus began and which transactions may need attention.
Do not assume that a late registration or a marketplace’s collection resolves earlier periods. Contact the SCDOR or ask a sales-tax professional to review your facts and determine the appropriate next steps. The right treatment depends on your activity, timing, and records; confirm the current position with the SCDOR before filing or paying for prior periods.
Get help managing South Carolina sales tax compliance
Sales Tax Compliance USA is a done-for-you service staffed by people for ecommerce and cross-border sellers. We can help review your South Carolina sales channels and nexus facts, organize registration through MyDORWAY, assess product and destination tax treatment, and manage return preparation and filing based on your records.
South Carolina’s threshold, local option taxes, marketplace rules, and special caps can make a simple rate-based approach unreliable. We can help you identify what needs checking and coordinate the compliance work, while confirming uncertain or changing rules with the SCDOR. Contact us to discuss your sales footprint and any possible unfiled obligations; the right plan depends on your circumstances.
Not sure how this applies to your business? We handle US sales tax registration, filing and remittance for ecommerce sellers as a fully managed service, for one fee. Book a free consultation and we will review your own position with you.
South Carolina remote-seller filing basics and the conditions that affect filing frequency
| Situation | South Carolina filing treatment |
|---|---|
| Remote seller with a South Carolina retail license | Monthly sales and use tax returns are the standard remote-seller requirement; file even for a period with no sales or no tax due. |
| The exact position here depends on your own facts, so it is worth confirming with the state directly or talking to us about your situation. | May file quarterly only if the SCDOR approves quarterly filing. |
| Monthly return period | Due by the 20th day of the following month; use the filing schedule assigned by the SCDOR. |
| Sales delivered to different South Carolina counties | Local option taxes may vary by county; determine applicable tax using the transaction destination and current SCDOR rules. |
| Marketplace-facilitated taxable order | A marketplace facilitator with nexus is responsible for collecting and remitting tax on marketplace sales; sellers should separately review direct sales and their own filing obligations. |
| Certain qualifying large purchases, including vehicles | South Carolina caps tax on certain purchases; confirm that the specific item qualifies rather than applying a cap to other sales. |
Frequently asked questions
Does South Carolina require out-of-state sellers to collect sales tax?
Yes, when an out-of-state seller has South Carolina nexus, including physical presence or economic nexus, it must obtain a retail license and collect and remit tax on taxable sales. A remote seller has economic nexus when gross revenue from the specified sales delivered into South Carolina exceeds $100,000 in the current or previous calendar year.
What is South Carolina’s economic nexus threshold for remote sellers?
The threshold is gross revenue exceeding $100,000 in the current or previous calendar year from tangible personal property, products transferred electronically, and services delivered into South Carolina. It is not limited to taxable sales.
Do foreign sellers need a South Carolina retail license?
A foreign seller that has South Carolina nexus and is engaged in retail sales must obtain a South Carolina retail license. Remote sellers apply through MyDORWAY; check the SCDOR’s current registration instructions and fee before applying.
What sales count toward South Carolina’s $100,000 remote-seller threshold?
The threshold includes gross revenue from tangible personal property delivered into South Carolina, electronically transferred products delivered into the state, and services delivered into the state. For tangible personal property, taxable retail, exempt retail, and wholesale sales count; the SCDOR also includes electronically transferred products and services whether or not they are taxable.
When must a remote seller begin collecting South Carolina sales tax?
The SCDOR says a remote seller that establishes economic nexus must obtain a retail license and remit tax beginning on the first day of the second calendar month after nexus is established. Confirm the threshold-crossing month and start date against your records and current SCDOR instructions.
How do I register for a South Carolina sales tax license?
Apply for a retail license through MyDORWAY, the SCDOR’s online registration system. The SCDOR also provides a paper application for remote sellers; verify current application requirements and fees on the department’s website.
Do marketplace sellers need to collect South Carolina sales tax?
A marketplace facilitator with nexus is responsible for collecting and remitting tax on taxable marketplace sales, including third-party products, unless a sale is exempt or excluded. A marketplace seller should still review direct sales, registration, return requirements, and whether marketplace revenue affects its nexus analysis.
How often do South Carolina remote sellers file sales-tax returns?
Remote sellers generally file monthly, with returns due by the 20th day of the following month, including zero-activity returns for periods when the account is required to file. Rather than give you a figure that may not apply to you, we would check this against the state’s current guidance for your specific setup — ask us and we will tell you exactly where you stand.
How we handle this for you
The mechanics in South Carolina are manageable on their own; the cost is the time it takes every single filing period, in every state you are registered in. We are a managed service: our team registers you with the South Carolina Department of Revenue, prepares and files your returns, and keeps you compliant period after period. You get one point of contact and one invoice — you do not get another dashboard to learn.
See our sales tax compliance services, check where you have obligations with the nexus calculator, or talk to us about South Carolina.
Official sources
- https://dor.sc.gov/sales-use-tax-index/sales-tax/remote-sellers
- https://dor.sc.gov/sales-use-tax-index/sales-tax
- https://dor.sc.gov/sales-use-tax-marketplace-facilitators-and-third-parties-whose-products-are-sold-marketplace-guidance-and-tax
- https://dor.sc.gov/businesses/apply-business-tax-account/licensing-retail-license
- https://dor.sc.gov/sites/dor/files/Documents/Policy%20Manuals/SC%20Sales%20Tax%20Manual.pdf
Reviewed by Paul le Roux, CA(SA). Sales Tax Compliance USA handles US sales tax registration, filing and remittance for cross-border and domestic ecommerce sellers as a fully managed service.
This page is general information for educational purposes and does not constitute legal or tax advice. Sales tax rules change and depend on your specific facts. Consult a qualified tax professional about your own position.
Related guides
Other South Carolina guides: Amazon FBA · Audit defence · Back sales tax · Economic nexus · Filing · Permit
Foreign sellers in nearby states: North Carolina · Georgia
Selling into several states? Check where you have crossed a threshold with the free nexus diagnostic, see the full 51-state threshold table, or browse every state guide.