South Carolina Income Tax Calculator
Estimate your 2026 South Carolina state income tax in seconds. Enter your annual income and filing status — this free South Carolina income tax calculator applies the verified 2026 South Carolina brackets, standard deduction, exemptions and credits. Runs entirely in your browser.
In 2026, South Carolina has a graduated income tax ranging from 1.99% to 5.21%. South Carolina offers a $15,000 standard deduction for single filers ($30,000 joint). South Carolina overhauled its tax for 2026 (Act 110): 1.99% on the first $30,000 of taxable income, then a continuous 5.21% rate above that — there is no bracket 'cliff' at $30,000. The new standard deduction phases out at higher incomes, which is not modeled.
South Carolina 2026 Income Tax Brackets
| Taxable income (Single) | Rate |
|---|---|
| $0 – $30,000 | 1.99% |
| Over $30,000 | 5.21% |
Marginal rates: only income inside each band is taxed at that band's rate.
Frequently Asked Questions
What is the South Carolina income tax rate for 2026?
South Carolina has a graduated income tax ranging from 1.99% to 5.21%.
What deductions and exemptions does South Carolina offer?
South Carolina offers a $15,000 standard deduction for single filers ($30,000 joint).
How accurate is this South Carolina income tax estimate?
It is an annualized estimate: your income minus the 2026 standard deduction (and any state exemptions/credits shown), run through 2026 marginal brackets. It does not include pre-tax deductions like 401(k) contributions, itemized deductions, phaseouts, or local income taxes. Your actual liability can differ.
Sources
Tax figures verified September 2026 for tax year 2026.
Estimate only — not tax advice. This calculator annualizes your income, subtracts the 2026 standard deduction (and state personal exemptions/credits where shown), and applies 2026 marginal brackets. It does not model pre-tax deductions (401(k), health insurance), itemized deductions, credits you may qualify for, phaseouts, or local/city/county income taxes. Consult a tax professional for your situation.