South Carolina Side Hustle Tax Calculator
Calculate your South Carolina state tax (6%), federal tax, and self-employment tax on 1099 income.
Last updated: January 2026 · Data from IRS Rev Proc 2024-40
South Carolina offers side hustlers a moderate tax burden with progressive state income tax rates that top out at 6.0% for 2025—down from 6.5% in previous years. The Palmetto State continues to reduce rates, making it increasingly attractive for freelancers and gig workers. With growing metro areas in Charleston, Columbia, and Greenville, South Carolina has a thriving side hustle economy.
How Side Hustle Taxes Work in South Carolina
South Carolina uses a progressive income tax system:
**South Carolina state tax rates (2025):** - 0% on income up to $3,460 - 3% on $3,461 - $17,330 - 6% on income over $17,330
**No local income taxes:** - Charleston, Columbia, Greenville, and all SC cities do not levy income taxes - You only pay the state progressive rate plus federal taxes
South Carolina's top rate has been declining from 7% to 6%, with further reductions planned.
What South Carolina Side Hustlers Owe
Let's say you're a single filer in Charleston with a $48,000 W-2 job and $14,000 in side hustle income from freelance photography, with $2,500 in business expenses.
**Your estimated taxes on the side hustle:** - Net self-employment income: $11,500 - Federal SE tax (15.3% of 92.35%): ~$1,627 - Federal income tax on side income: ~$2,530 (22% bracket) - South Carolina state tax (6%): ~$690 - **Total additional tax: ~$4,847**
Your effective rate on the side hustle is approximately 42%.
South Carolina Tax Deadlines 2025
South Carolina estimated tax deadlines: - **Q1**: April 15, 2025 - **Q2**: June 16, 2025 - **Q3**: September 15, 2025 - **Q4**: January 15, 2026
Use South Carolina Form SC1040ES for state estimated tax payments.
Common Deductions for South Carolina Freelancers
Common deductions for South Carolina freelancers include: - Home office expenses - Business mileage (67 cents/mile for 2025) - Equipment and supplies - Professional development - South Carolina generally follows federal deduction rules
South Carolina Side Hustle Tax FAQ
What is South Carolina's tax rate on side hustle income?
South Carolina has progressive rates with a top rate of 6% for 2025, applying to income over $17,330. The rate has been decreasing from 7% in recent years.
Does Charleston have a city income tax?
No, Charleston and all South Carolina cities do not have local income taxes. You only pay state-level income tax on your side hustle earnings.
Is South Carolina lowering its tax rates?
Yes, South Carolina has been phasing in tax rate reductions. The top rate dropped from 7% to 6% and may continue to decrease.
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