Starting a Business or Going Freelance in South Carolina

State-specific financial checklist for starting a business or going freelance — tax implications, insurance considerations, and common mistakes for South Carolina residents.

Starting a Business or Going Freelance in South Carolina: What You Need to Know

Your financial life changes completely when you work for yourself. Taxes, retirement savings, insurance, and cash flow management all work differently.

South Carolina Tax Profile

South Carolina exempts Social Security and offers a $15,000 retirement income deduction for those 65+. Property taxes are among the lowest in the US.

Financial Checklist for South Carolina Residents

1

Choose your business structure

Sole Proprietorship: Simplest, no registration required, but no liability protection. LLC: Liability protection, pass-through taxation, moderate complexity. S-Corp: Can save on self-employment tax (you pay yourself a 'reasonable salary' and take remaining profits as distributions), but more paperwork and payroll requirements. Consult a CPA to choose.

2

Set up separate business accounts

Open a business checking account and a business credit card. Never commingle personal and business finances — it undermines liability protection and creates an accounting nightmare. Track ALL business income and expenses from day one.

3

Save for taxes from every payment

Self-employed individuals pay both the employee and employer portions of Social Security and Medicare taxes (15.3% total on the first ~$176K of net income, plus Medicare only above that). Set aside 25-30% of every payment into a separate tax savings account. Pay quarterly estimated taxes (April 15, June 15, September 15, January 15).

4

Set up a Solo 401(k) or SEP IRA

Solo 401(k): You can contribute up to $24,000 as an employee (2026) + up to 25% of compensation as the employer. Total max: $72,000. SEP IRA: Simpler, but lower max — 25% of compensation up to $72,000. Solo 401(k) usually wins for most self-employed people. You can also do a Roth IRA (backdoor if needed) and an HSA if you have a compatible health plan.

5

Get health insurance

Self-employed individuals can deduct health insurance premiums (including dental and long-term care) as an above-the-line deduction. Options: ACA marketplace (healthcare.gov), spouse's employer plan, professional association plans, or health-sharing ministries (not technically insurance).

6

Build a cash buffer for income variability

Freelance income is lumpy. Maintain a larger emergency fund — 6-12 months of essential expenses. Plus a separate 'business operating reserve' of 2-3 months of business expenses. This prevents you from making fear-based decisions during slow months.

7

Understand your deductions

Home office deduction (must be regular and exclusive use), business mileage ($0.70/mile for 2025), health insurance premiums, retirement contributions, equipment and software, professional development, internet and phone (business portion), and the Qualified Business Income (QBI) deduction — up to 20% of qualified business income.

Tax Implications

Self-employment tax: 15.3% (12.4% Social Security + 2.9% Medicare) on net self-employment income. Half is deductible as an above-the-line adjustment.
Quarterly estimated taxes: Required if you expect to owe $1,000+ in tax. Safe harbor: pay 100% of last year's tax (110% if AGI > $150K) or 90% of current year's tax to avoid penalties.
QBI deduction: Up to 20% deduction on qualified business income. Phases out for high earners in specified service businesses. Complex — use a CPA.
Business expenses: Ordinary and necessary expenses are deductible. Track everything — receipts, mileage logs, home office measurements.
S-Corp salary requirement: If you elect S-Corp, you must pay yourself a 'reasonable salary' subject to payroll taxes before taking distributions.

South Carolina tax note: Top rate 6.4%. State income tax applies at the top rate of 6.4% — factor this into your planning.

Insurance Considerations

Health insurance: ACA marketplace is the most common path. Premiums may be subsidized if your income qualifies. Premiums are deductible as self-employed health insurance (above the line).
Disability insurance: Critical when self-employed — no employer safety net. Own-occupation, non-cancelable policies are best. Expect to pay 1-3% of income for coverage.
Liability insurance: General liability and/or professional liability (errors & omissions) depending on your industry. An LLC helps, but insurance is the first line of defense.
Life insurance: Individual term policies (not tied to an employer). Consider coverage that replaces your business's contribution to household income.

Common Mistakes for South Carolina Residents

Not paying quarterly estimated taxes — the penalty isn't huge (currently ~8% annual rate), but it's avoidable and the April tax bill can be a shock.
Mixing personal and business finances — a nightmare at tax time and risks piercing the corporate veil (losing liability protection).
Underpricing services — account for self-employment tax, health insurance, retirement savings, vacation, sick days, and overhead when setting rates. A W-2 salary of $100K costs an employer ~$130K with benefits — your freelance rate should reflect the full cost.
Not saving for retirement — without an employer plan, it's 100% on you. Automate monthly contributions to your Solo 401(k) or SEP IRA.
Overlooking state and local business requirements — business licenses, local taxes, annual reports, and franchise taxes. Requirements vary by location and industry.

Explore Further

Tools

tax-bracketfire-calculatorlife-insurancecompound-interest-calculator

Guides

retirement-account-typesemergency-fund-guide

Sources

Navigate starting a business or going freelance with personalized guidance

Alistair combines state-specific rules with your unique financial picture to help you through starting a business or going freelance.

Try Alistair Free