South Carolina Tax Brackets Guide – South Carolina offers one of the more straightforward state income tax systems in the U.S., with just three brackets and the same rates applying regardless of filing status. As of 2026, the top marginal rate for tax year 2025 is 6% thanks to a temporary reduction enacted in the state’s FY 2026 budget.
Whether you’re a resident, new mover to the Palmetto State, retiree, or small business owner, this guide breaks down exactly how South Carolina tax brackets work, how to calculate your bill, recent changes, and tips to keep more of your money.
What Are South Carolina Tax Brackets?
South Carolina tax brackets determine the percentage of your taxable income you owe to the state. The state uses a graduated (progressive) system with three brackets:
- 0% on the lowest portion of income
- 3% on the middle portion
- 6% on income above the top threshold
Unlike the federal system, South Carolina brackets do not change based on whether you file single, married filing jointly, head of household, or qualifying surviving spouse. The same dollar amounts apply to everyone.
Your South Carolina taxable income starts with your federal taxable income (after federal deductions and exemptions) and then applies state-specific additions or subtractions (such as certain retirement income exclusions or business adjustments).
2025 South Carolina Income Tax Brackets and Rates
For tax year 2025 (returns filed in 2026), here are the current brackets:
| Taxable Income | Marginal Tax Rate | Tax Calculation Formula (for reference) |
|---|---|---|
| $0 – $3,560 | 0% | $0 |
| $3,561 – $17,830 | 3% | 3% of taxable income minus $107 |
| $17,831 and above | 6% | 6% of taxable income minus $642 |
Key notes:
- These thresholds are for all filing statuses.
- For incomes under $100,000, the official SC1040TT tax tables provide exact dollar amounts (recommended for precision).
- For incomes of $100,000 or more, use the simple formula: (Taxable Income × 6%) – $642.
Example: A single filer or married couple with $50,000 in South Carolina taxable income would owe approximately $1,358 using the tables/formula (exact amount confirmed via official tables). Someone earning $100,000 would owe $5,358.
2026 South Carolina Tax Brackets Outlook
The top rate remains 6% through June 30, 2026. Starting July 1, 2026, it is scheduled to revert to 6.2% unless new legislation extends the reduction.
The zero-bracket and 3% threshold are inflation-adjusted slightly each year. For tax year 2026, expect them to rise to approximately $3,640 and $18,230 (per current projections). Always check the latest SC1040TT tables when they are released in late 2025 or early 2026.
How to Calculate Your South Carolina Income Tax?
- Start with your federal taxable income (Form 1040, line 15).
- Make South Carolina additions and subtractions (see SC Schedule NR or instructions).
- Apply the appropriate bracket or tax table.
- Subtract any credits (e.g., child tax credit, education credits).
Pro tip: Use the free SCDOR withholding calculator or tax software like TurboTax that automatically pulls South Carolina rules.
South Carolina Standard Deduction, Exemptions & Credits
- Standard Deduction: South Carolina generally follows your federal standard deduction or itemized deductions with modifications.
- Dependent Exemption: $4,930 per qualifying dependent (child or relative) for 2025 — a nice boost from prior years.
- No personal exemption for yourself or your spouse.
- Popular credits include the Two-Wage-Earner Credit, Property Tax Credit for seniors, and various business/investment incentives.
Who Must File a South Carolina Income Tax Return?
You must file if:
- You are a full-year or part-year resident and are required to file a federal return, OR
- You have South Carolina-source income above certain thresholds (even as a non-resident).
2025 filing deadline: Extended to October 15, 2026 for all individual returns (per SCDOR announcement).
Electronic filing is free and fastest via the SCDOR website or approved software.
Recent Changes to South Carolina Tax Brackets
South Carolina has been aggressively cutting taxes:
- Top rate dropped from 6.4% (2023) → 6.2% (2024) → 6% for 2025 (temporary).
- Dependent exemption increased to $4,930.
- Ongoing conformity with the federal Internal Revenue Code as of December 31, 2024.
Larger reforms (including potential further rate reductions) were discussed in the 2025–2026 legislative session — watch for updates from the South Carolina Department of Revenue.
How South Carolina Taxes Compare to Other States?
- No state income tax: Florida, Texas, Tennessee, etc.
- Flat tax states: Many at 4–5%.
- South Carolina’s effective top rate of 6% is competitive in the Southeast (lower than North Carolina’s ~4.25% phased rate but higher than Georgia’s current structure).
Combined with a 6% statewide sales tax (plus local add-ons) and moderate property taxes, South Carolina remains attractive for retirees and remote workers.
Other Important South Carolina Taxes
While this guide focuses on income tax brackets, here’s the full picture:
- Sales Tax: 6% state + up to 3% local (total 6–9%).
- Property Tax: Average effective rate ~0.45–0.55% (among the lowest in the nation).
- Corporate Income Tax: Flat 5%.
Tips to Lower Your South Carolina Tax Bill
- Maximize retirement contributions (South Carolina offers generous exclusions for retirement income in some cases).
- Claim every dependent and credit.
- Consider timing income/expenses if you expect rate changes.
- Use tax software or a CPA familiar with SC rules.
- Check for the latest SC W-4 to adjust withholding accurately.
Frequently Asked Questions About South Carolina Tax Brackets
Is South Carolina tax progressive?
Yes — three brackets with increasing marginal rates.
Do retirees pay South Carolina income tax?
Many retirement incomes (pensions, 401(k), IRA) qualify for exclusions or deductions.
Are Social Security benefits taxed in South Carolina?
No — fully exempt.
Where can I find the official 2025 tax tables?
Directly from the South Carolina Department of Revenue at dor.sc.gov (search SC1040TT).
Final Thoughts: Planning Your South Carolina Taxes in 2026
South Carolina’s tax brackets are among the simplest and most predictable in the country, especially with the current 6% top rate. Staying informed about the temporary reduction and potential 2026 changes will help you budget accurately and avoid surprises.
For the most accurate calculation, always use the official 2025 South Carolina Individual Income Tax Tables (SC1040TT) and the SCDOR website. Tax laws can change, so verify with a tax professional or the Department of Revenue for your specific situation.
Ready to file or plan ahead? Visit dor.sc.gov for forms, calculators, and the latest updates.
Last updated: April 2026. Sources include the official South Carolina Department of Revenue and Tax Foundation data.