South Carolina Income Tax Calculator 2026
Calculate your combined federal and South Carolina state income tax for 2026. See your federal brackets, South Carolina tax, effective rate, and take-home pay — all calculated privately in your browser.
South Carolina Income Tax: Graduated Brackets Up to 6.2%
South Carolina uses a progressive income tax system with 3 brackets. Rates range from 0% to 6.2%, with higher income taxed at higher rates. South Carolina exempts the first $3,460 of income from tax.
Like federal taxes, South Carolina's system is marginal — only the income within each bracket is taxed at that bracket's rate. Combined with federal taxes (10%–37%), South Carolina residents can face a total marginal rate of up to 43.2% on their highest dollars of income.
South Carolina Tax Brackets for 2026 (Single Filer)
The South Carolina income tax brackets for single filers are:
- 0% on income from $0 to $3,460
- 3.0% on income from $3,460 to $17,330
- 6.2% on income over $17,330
Your marginal rate is the rate on your last dollar of income. Your effective rate (total tax divided by total income) is always lower because of the progressive structure.
Tips to Lower Your South Carolina Tax
Maximize pre-tax retirement contributions to reduce both federal and South Carolina taxable income. The 2026 401(k) limit is $24,500 ($32,500 with catch-up for age 50+). If South Carolina conforms to federal deductions, your standard deduction and itemized expenses also reduce your state tax liability.