South Carolina Paycheck Calculator
South Carolina's 2026 tax is 1.99% on the first $30,000 of taxable income and 5.21% above, after a deduction that shrinks as income rises.
South Carolina cut its income tax for 2026 with Act 110, approved in March 2026: 1.99% on the first $30,000 of taxable income and 5.21% on the rest, the same for every filing status. The state no longer uses a federal deduction. It starts from federal adjusted gross income and subtracts its own income adjusted deduction, which shrinks as income rises and is gone at $95,000 for single filers, $142,500 for heads of household and $190,000 for married couples filing jointly. This calculator uses the amount at $104,000 of income: $0 single, $10,500 head of household and $23,460 joint.
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Estimates only. Not tax or legal advice. Consult a tax professional for accuracy.
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South Carolina Paycheck FAQ
Common questions about paychecks and taxes in South Carolina
What is the South Carolina state income tax rate for 2026?
1.99% on the first $30,000 of taxable income and 5.21% on taxable income above $30,000, for every filing status. Act 110, approved in March 2026, set these rates starting with the 2026 tax year. There is no 0% bracket anymore: the 1.99% rate starts with the first dollar.
What is South Carolina's income adjusted deduction?
From 2026 South Carolina starts from federal adjusted gross income and subtracts its own income adjusted deduction instead of a federal standard or itemized deduction. It is up to $15,000 for single filers and married filing separately, $22,500 for heads of household and $30,000 for married couples filing jointly and surviving spouses. It shrinks once federal AGI passes $40,000, $60,000 or $80,000 and is gone at $95,000, $142,500 or $190,000. The calculator uses the amount at $104,000 of income ($0 single, $10,500 head of household, $23,460 joint), so it overstates tax at lower incomes, and for heads of household and joint filers it understates tax above $104,000.
Why doesn't my South Carolina withholding match this calculator?
South Carolina's 2026 withholding tables and formula were published in late 2025, before Act 110, and still use the old 0%, 3% and 6% rates. Act 110 directs the Department of Revenue to adjust them, but revised tables haven't been published yet. The calculator shows the 2026 tax under the new rates, so your paycheck withholding may differ until the tables catch up.
What does this calculator leave out for South Carolina?
It starts from gross wages rather than federal adjusted gross income, so pre-tax 401(k) and health deductions aren't subtracted, and it uses the income adjusted deduction at $104,000 for every income. That shows too much tax for single filers below $95,000 (up to about $726 a year) and for heads of household and joint filers below $104,000 (up to about $625 and $341), and too little for those two above $104,000, up to $547 and $1,222 a year once the deduction is gone at $142,500 and $190,000. It also leaves out dependent exemptions, the retirement and age-65 deductions, the state earned income credit and the two-wage-earner credit.