LLC vs sole proprietorship vs corporation in South Carolina

The structure decides two things: whether your personal assets are on the line for the business's debts, and how the profit gets taxed. They're separate questions, and most mistakes come from mixing them up.

Checked against official sources on November 6, 2026.

Cheapest to start: Sole proprietorship: no state filing
Liability protection: LLC or corporation
LLC default taxes: Same as a sole prop (one owner) or partnership (several)
S corp: A tax election, not a separate entity

Side by side

Structure	Personal liability	Federal tax	SC filing to form	Ongoing SC filing
Sole proprietorship	Unlimited	Owner's personal return plus self-employment tax	None	None at the entity level
General partnership	Unlimited for general partners	Pass-through; partners pay self-employment tax	None with the Secretary of State	Partnership return as applicable
LLC, one owner	Generally not liable for company debts	Disregarded: reported on the owner's return	Articles of Organization, $110	No annual report unless taxed as a corporation
LLC, several owners	Generally not liable for company debts	Partnership by default	Articles of Organization, $110	No annual report unless taxed as a corporation
C corporation	Strongest separation	Company pays tax; dividends taxed again	Articles of Incorporation + CL-1, $135	Annual report on the SC1120; license fee, minimum $25
S corporation election	Same as the underlying LLC or corporation	Pass-through; 100 or fewer shareholders, one class of stock	IRS Form 2553	SC1120S due March 15 for calendar-year filers; license fee
Nonprofit corporation	Not personally liable	Exempt only after IRS approval ($600, or $275 for 1023-EZ)	Articles of Incorporation, $25	Charities that solicit register with the Secretary of State yearly

Sole proprietorship

You and the business are the same person in the eyes of the law. Nothing to file with the state, and the profit goes on your personal return. The trade-off is that a lawsuit or unpaid business debt can reach your personal assets. The SBA describes it as a fit for low-risk businesses and for testing an idea.

LLC

An LLC is a separate legal entity, so members and managers are generally not personally liable for the company's debts under South Carolina law. Taxes don't change by default: a one-owner LLC is reported on the owner's return and a multi-owner LLC files as a partnership. You still pay self-employment tax on the profit. In South Carolina, an LLC that isn't taxed as a corporation has no annual report and no annual fee, which makes it cheap to keep.

Limited liability doesn't cover what you personally sign for. SBA loans, for example, generally require a personal guarantee from anyone who owns 20% or more.

When an S corporation election makes sense

An S corporation isn't a different kind of company; it's a tax choice an LLC or corporation can make with IRS Form 2553. Owners who work in the business pay themselves a salary and take the rest as distributions, which is why it can lower self-employment tax once the business is consistently profitable. It also adds payroll and an SC1120S return each year. A CPA can tell you where the break-even sits for your numbers.

Deadline: Form 2553 is due within 2 months and 15 days after the start of the tax year it should apply to, or any time in the year before.
Missed it? The IRS allows late-election relief in many cases, up to 3 years and 75 days after the intended date.
An LLC electing S status files only Form 2553; it doesn't also need Form 8832.

C corporation

The structure for raising outside investment or planning a sale. The company pays its own income tax (South Carolina's corporate rate is 5%) and shareholders pay again on dividends. In South Carolina the annual report is part of the SC1120 return, with a license fee of 0.1% of capital stock and paid-in surplus plus $15, minimum $25.

South Carolina income tax on business profit

Profit from a sole proprietorship, LLC, partnership or S corporation flows to the owner's South Carolina return. The state changed individual rates starting with the 2026 tax year (H.4216): 1.99% on income under $30,000, and 5.21% minus $966 at $30,000 and above. Confirm current details with SCDOR or a CPA before you plan around them.

Mistakes we see

Forming an LLC expecting a tax cut. By default the taxes are identical; the benefit is liability protection.
Missing the S election deadline, then paying a year of extra self-employment tax.
Assuming the LLC protects loans you personally guaranteed. It doesn't.
Treating a DBA as a business. It's just a name; South Carolina doesn't even register them.
Paying a website for an EIN. The IRS issues them free.

Common questions

Is an LLC or sole proprietorship better in South Carolina?

They're taxed the same way by default. The LLC costs $110 to form and generally protects your personal assets from the business's debts; the sole proprietorship costs nothing and protects nothing. If the business has real liability risk or you have assets to protect, the LLC is usually worth it.

Does South Carolina require an annual report for LLCs?

No, unless the LLC is taxed as a corporation. Then it files the CL-1 initial report and an annual SC1120 or SC1120S with a license fee.

How much does it cost to incorporate in South Carolina?

$135: $110 for the Articles of Incorporation and $25 for the CL-1 initial annual report. After that, a minimum $25 annual license fee with the corporate return.

When should I elect S corporation status?

Usually once profit is steady enough that payroll costs are outweighed by self-employment tax savings. File Form 2553 within 2 months and 15 days of the start of the tax year. Ask a CPA to run your numbers.