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State Guide Last verified September 17, 2026

South Carolina Car Sales Tax, Trade-In Credit, and Out-of-State Rules

What the desk and the buyer each need to know when a South Carolina deal crosses state lines: the rate, the trade-in math, the exemption paperwork, and the drive-home tags. Every fact links to the official source.

Check an Out-of-State Deal Jump to Quick Facts

Every fact sourced to South Carolina official publications below

Short answer

South Carolina charges 5% IMF (max $500), no local add-ons instead of an ordinary sales tax. South Carolina taxes the price after the trade-in is deducted. South Carolina collects tax at the buyer's home-state rate, capped at South Carolina's own rate. South Carolina credits sales tax legally paid to another state, so the same dollars are not taxed twice. All of this describes a retail purchase from a dealer; leases and private-party sales run on different rules in most states.

South Carolina car sales tax quick facts

Last verified September 17, 2026
Sales tax rate on vehicles5% IMF (max $500), no local add-ons[1]
Trade-in creditSouth Carolina taxes the price after the trade-in is deducted.[2]
Selling to an out-of-state buyerSouth Carolina collects tax at the buyer's home-state rate, capped at South Carolina's own rate.[2]
Credit for tax paid to another stateSouth Carolina credits sales tax legally paid to another state, so the same dollars are not taxed twice.[3]
Dealer doc feeNo statutory cap[4] · taxable[5]
Temp tag for the drive homeDealers must issue a 45-day traceable temporary plate at the point of sale to every retail buyer, including buyers who will register the vehicle in another state (system effective January 18, 2024).[6]
Out-of-state buyer registrationA person without an SC credential can register a vehicle (complete SCDMV Form TI-006, Statement of Vehicle Operation). County vehicle property tax must be paid first and the paid receipt brought to the SCDMV; a vehicle the owner previously registered in another state owes a flat $250 IMF at titling.[7]

South Carolina car sales tax calculator

Enter the sale price and any trade-in to estimate South Carolina vehicle tax and the out-the-door total before title and registration. It applies the verified rate, trade-in rule and doc fee treatment from the quick facts above.

General information, not tax or legal advice. Everything on this page was compiled from official South Carolina government publications (listed under Sources) and last verified September 17, 2026, but rates and rules change and errors are possible. Voltra makes no warranty as to accuracy or completeness and accepts no liability for decisions made on this data. Confirm the current rules with the South Carolina Department of Motor Vehicles or a licensed professional before acting on anything here. Covers retail dealer sales; leases and private-party sales follow different rules in most states.

From the desk

South Carolina's Infrastructure Maintenance Fee replaced sales tax on vehicles and is capped at a fixed maximum, which turns expensive-vehicle math upside down versus neighboring states. The desk quoting a Georgia or North Carolina buyer needs all three systems straight.

Selling to an out-of-state buyer in South Carolina

South Carolina collects tax at the buyer's home-state rate, capped at South Carolina's own rate.[2]

What makes the exemption stick is Form ST-385, completed at delivery. Without it, the assessment letter goes to the dealership, not the buyer.

Either way, collecting the right tax is the easy part. The title work, the temp tag, and the out-of-state registration still have to land, and each one runs on its own clock.

Buying in South Carolina from out of state

If you live in another state and buy in South Carolina, the deciding rule is where the vehicle gets registered: your home state's tax applies at registration, and what happens at the South Carolina sale depends on the rule above. South Carolina credits sales tax legally paid to another state, so the same dollars are not taxed twice.[3]

Registration and temp tags

Dealers must issue a 45-day traceable temporary plate at the point of sale to every retail buyer, including buyers who will register the vehicle in another state (system effective January 18, 2024).[6] A person without an SC credential can register a vehicle (complete SCDMV Form TI-006, Statement of Vehicle Operation). County vehicle property tax must be paid first and the paid receipt brought to the SCDMV; a vehicle the owner previously registered in another state owes a flat $250 IMF at titling.[7]

Bordering states

Cross-border deals from South Carolina most often involve Georgia and North Carolina. The combination decides the outcome, so check both states in the out-of-state checker.

Vehicle-type exceptions

Items not subject to the IMF (aircraft, boats, boat and watercraft motors, horse trailers, and similar non-SCDMV-registered items) fall under the sales-tax Max Tax regime instead, taxed at 5% capped at $500 per item, so the effective ceiling matches the IMF.[8]

How South Carolina actually levies this

South Carolina charges a one-time Infrastructure Maintenance Fee (IMF) instead of sales tax on vehicles that will be titled or registered with the SCDMV: 5% of the purchase price, never more than $500 per vehicle, collected by the SCDMV at titling/registration.[1]

Sources

  1. dmv.sc.gov/Vehicle-Owners/Buying-Or-Selling-A-Car · verified 2026-08-23
  2. dor.sc.gov/…/RR18-1.pdf · verified 2026-08-23
  3. dor.sc.gov/…/sales-and-use-tax-auto-and-truck-dealers-guide.pdf · verified 2026-08-23
  4. consumer.sc.gov/…/motor-vehicle-dealers · verified 2026-08-23
  5. dmv.sc.gov/…/Dealer-Titling-Class-Presentation-Self-Paced.pdf · verified 2026-09-17
  6. dmv.sc.gov/…/dealers-licensing-and-transaction-laws-are-changing · verified 2026-08-23
  7. dmv.sc.gov/vehicle-owners/moving-to-sc · verified 2026-08-23
  8. dor.sc.gov/sales-use-tax-index/maximum-tax-max-tax · verified 2026-08-23
Cite this page

“South Carolina Car Sales Tax & Out-of-State Rules.” Voltra. Last verified September 17, 2026. https://voltra.ai/car-sales-tax/south-carolina/

More state-by-state guides: trade-in tax credit by state · recent rule changes · all states + the out-of-state checker

South Carolina car sales tax questions

South Carolina charges 5% IMF (max $500), no local add-ons instead of an ordinary sales tax. It lands at titling or registration rather than at the dealership counter, and the trade-in rules decide the price it applies to.

South Carolina taxes the price after the trade-in is deducted. Because that treatment sets the taxable price, an identical car and trade can owe different tax on either side of a state line.

South Carolina collects tax at the buyer's home-state rate, capped at South Carolina's own rate. The tax is figured on Form ST-385 at the sale.

South Carolina credits sales tax legally paid to another state, so the same dollars are not taxed twice.

South Carolina does not cap dealer doc fees by statute. The doc fee is part of the taxable price.

Start with the sale price and subtract the trade-in allowance (South Carolina credits it in full), then multiply by 5% IMF (max $500), no local add-ons. The dealer doc fee is taxable in South Carolina, so add it before you multiply. The South Carolina calculator on this page runs those steps with the verified figures and shows the out-the-door estimate before title and registration fees.