@Steve319 - It might not be just state sales taxes but occupancy tax. It might also be another tax to the county. Looks like Horry County has a Hostpitality Fee - 3% of gross proceeds from Rental of Transient Accommodations. You should consult a tax professional regarding your tax liability for your Airbnb business.
https://www.airbnb.com/help/article/481/how-do-taxes-work-for-hosts
https://www.airbnb.com/help/article/654/what-is-occupancy-tax--do-i-need-to-collect-or-pay-it
https://www.airbnb.com/help/article/1036/how-does-occupancy-tax-collection-and-remittance-by-airbnb-...
http://www.horrycounty.org/Departments/HospitalityFee.aspx
https://www.airbnb.com/help/article/1857/what-are-airbnb-service-fees
Please note: Businesses located inside the city limits will calculate the fee at 1.5% of the gross proceeds from the Sale of Food/Beverages, Rental of Transient Accommodations and Paid Admissions and/or Amusements. All businesses must register with the S.C. Department of Revenue. In addition, businesses located inside the city limits must register with their local municipality.
Accommodations for Transients Includes rental or charges for any rooms, campground spaces, lodgings, or sleeping accommodations furnished to transients by any hotel, inn, tourist court, tourist camp, motel, campground, residence, or any place in which rooms, lodging or sleeping accommodations are furnished to transients for a consideration within the County to which the sales tax imposed by the State of South Carolina pursuant to Section 12-36-920 of the South Carolina Code applies.
- All applicable short-term accommodation rentals require collection and remittance of the Hospitality Fee.
- Long-term accommodation rentals 90 consecutive days at the same location to the same patron does not require collection and remittance of the Hospitality Fee.
- If accommodations are arranged by a property manager, insure that the property manager is collecting and remitting Hospitality Fees.