Sole Proprietorship in South Carolina: How to Start One

Sole Proprietorship in South Carolina: How to Start One

Sole Proprietorship in South Carolina: How to Start One

A sole proprietorship is the default business structure in South Carolina. If you start doing business under your own name and don't file anything with the state, you're already a sole proprietor in the eyes of the law. That simplicity is the appeal: no formation document, no filing fee with the Secretary of State, and no registered agent requirement. But "simple" doesn't mean "nothing to do." You'll still likely need a local business license, possibly a state retail license, and a plan for how you'll handle taxes. This guide walks through exactly what a sole proprietor in South Carolina needs to set up, in order.

What Is a Sole Proprietorship, Exactly?

A sole proprietorship is an unincorporated business owned and run by one person, with no legal separation between the owner and the business. There's no entity formed with the state, which means no Articles of Organization or Articles of Incorporation to file. The tradeoff for that simplicity is personal liability: if the business is sued or owes money, your personal assets (car, house, savings) are on the line, because legally there is no "business" separate from you. Compare that to an LLC, where South Carolina requires a $110 Articles of Organization filing and gives you liability protection in exchange.

If you plan to bring on a partner, a general partnership is the default structure instead, and it carries the same lack of liability protection. Either way, understanding what you're not getting (a legal shield) is as important as understanding what you are getting (low cost, minimal paperwork).

What You'll Need

  • A business name (your own legal name, or a trade name/DBA if you want something different)
  • A Social Security Number or an EIN (Employer Identification Number) from the IRS
  • A local business license from your county and/or city
  • An SCDOR Business Tax Application (filed through MyDORWAY) if you'll collect sales tax or hire employees
  • A Retail License from the SC Department of Revenue, if you sell tangible goods ($50 one time, nonrefundable, per location)
  • A separate business bank account (recommended, not legally required)
  • Basic bookkeeping system for tracking income and expenses

Step-by-Step: How to Start a Sole Proprietorship in South Carolina

1. Choose Your Business Name

You can operate under your own legal name with no paperwork at all. If you want to use a different name, that's a trade name, commonly called a DBA ("doing business as"). South Carolina has no state-level DBA registration. The Secretary of State's office does not register trade names for sole proprietors. Instead, you'll typically record the trade name locally, most often as part of your county or municipal business license application, and you'll list it as your trade name on your IRS EIN application and on the SCDOR Business Tax Application. Check with your county or city clerk's office for their specific process and any local fee, since this varies by location. More detail is available at South Carolina Business One Stop.

2. Confirm You Don't Need to File With the Secretary of State

This trips people up because they assume every business needs to register with the state. Sole proprietors and general partnerships do not file organizing documents with the South Carolina Secretary of State at all. That step is reserved for LLCs and corporations. If you're a sole proprietor, you can skip the Business Entities Online portal entirely, unless you later decide to convert to an LLC for liability protection.

3. Get an EIN (or Decide to Use Your SSN)

As a sole proprietor with no employees, you're allowed to use your Social Security Number for tax filing purposes instead of an EIN. That said, most banks require an EIN to open a business checking account, and using an EIN instead of your SSN on invoices and vendor forms cuts down on identity exposure. The IRS issues EINs for free, online, in minutes. If you plan to hire anyone, an EIN is mandatory, not optional.

4. Register for South Carolina Taxes

If you'll sell taxable goods or services, register with the South Carolina Department of Revenue (SCDOR) through the Business Tax Application on MyDORWAY. This is where you'll also apply for the Retail License if you sell tangible personal property, a one-time $50 nonrefundable fee per location. South Carolina's state sales tax rate is 6%, though local option taxes can add to that depending on your county. Start at dor.sc.gov for the application, and at dor.sc.gov generally for SCDOR's full range of business tax accounts (withholding, use tax, and others depending on what you do).

5. Get a Local Business License

South Carolina has no general statewide business license. Instead, business licensing happens at the county and/or municipal level, based on where your business is physically located or where you do business. South Carolina Business One Stop is explicit that Secretary of State registration is not a business license, and that this local step is separate and still required. Contact your county and city (if you're inside city limits) to find their business license office, application, and fee schedule. Fees and renewal dates vary widely by jurisdiction, so confirm current numbers directly with your local office rather than assuming a statewide standard.

6. Open a Separate Business Bank Account

Nothing in South Carolina law requires this, but it's one of the most consistently recommended steps for sole proprietors. Commingling personal and business funds makes bookkeeping harder, muddies your tax records, and can undercut any liability argument you'd otherwise have if you're ever sued. Bring your EIN (or SSN), a copy of your local business license, and your DBA filing (if applicable) to the bank.

7. Set Up Bookkeeping and Estimated Tax Payments

As a sole proprietor, your business income passes through to your personal tax return (Schedule C on your federal return, and the corresponding South Carolina individual income tax filing). South Carolina's individual income tax is graduated. For tax year 2026, SCDOR lists two brackets: 1.99% on income under $30,000 and 5.21% on income at or above $30,000 (less a $966 adjustment); for 2025 the range ran from 0% up to a 6% top rate, and brackets adjust annually for inflation. Because no one withholds tax from self-employment income, you'll likely need to make quarterly estimated payments to both the IRS and SCDOR to avoid penalties. A CPA can set up the right estimate for your situation.

8. Keep Ongoing Compliance in Mind

Unlike an LLC or corporation, a sole proprietorship has no annual report requirement with the state, and no annual License Fee to the Secretary of State, because there's no entity registered there in the first place. Your ongoing obligations are local license renewals, state tax filings, and federal tax filings. It's a lighter compliance load than an LLC, which is part of why sole proprietorships are popular for freelancers, consultants, and very small operations.

Tips and Common Mistakes to Avoid

  • Don't assume you need to file with the Secretary of State. Sole proprietors generally skip this step entirely; confusing it with LLC formation wastes time and, if you file anyway, the $110 fee.
  • Don't skip the local business license because you didn't register with the state. These are separate systems. Plenty of new sole proprietors assume no state filing means no licensing at all, then get a notice from their county.
  • Don't ignore the liability tradeoff. If your work carries real risk (client injury, professional errors, high contract values), the lack of liability protection in a sole proprietorship is worth weighing against converting to an LLC later.
  • Don't forget the Retail License if you sell physical goods. The $50 fee is per location and is easy to overlook if you're used to service-only businesses.
  • Don't wait until tax season to think about estimated payments. Underpayment penalties on self-employment income are common for first-year sole proprietors who are used to employer withholding.

Costs at a Glance

ItemCostWhere
Secretary of State filingNot applicableSole proprietors don't file organizing documents with the SC Secretary of State
DBA / trade nameVaries by county/municipality; no state feeLocal business license office
Local business licenseVaries by county/cityCounty and/or municipal licensing office
SCDOR Retail License (if selling goods)$50 one time, nonrefundable, per locationMyDORWAY Business Tax Application
EINFreeIRS.gov

What to Expect

Most people can generally get the practical basics of a South Carolina sole proprietorship in place, an EIN, a local license application submitted, and an SCDOR tax account, within a week or two, though actual timelines depend heavily on your county's license processing schedule and whether you need the Retail License. Because there's no state entity filing to wait on, the process tends to move faster than forming an LLC or corporation. That said, local licensing timelines are not standardized across South Carolina's counties and cities, so it's worth calling ahead rather than assuming a fixed turnaround.

Helpful Resources

This article is for general informational purposes only and does not constitute legal or tax advice. South Carolina's requirements can vary by county and industry, and tax rules change. Consult a licensed attorney and a CPA familiar with South Carolina law before making decisions about your business structure, licensing, or tax obligations.