South Carolina Finances: Research, Taxes and Practical Tips
South Carolina did not tweak its income tax in 2026. It replaced it. Act 110, signed on March 30, retired the 0%, 3% and 6% brackets, swapped the federal standard deduction for a state deduction with its own phaseout and reset the starting point for the return. Add a handful of county sales tax votes and the year reads like a change log. Here it is, in order.
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2026 in South Carolina, one date at a time
- March 1: Lexington County extends its school district tax, keeping its general combined sales tax rate at 7%.
- March 30: Act 110 is signed. Tax year 2026 moves to 1.99% on the first $30,000 of South Carolina taxable income and 5.21% minus $966 at $30,000 or more. The federal standard deduction is replaced by the South Carolina Income Adjusted Deduction (SCIAD), the return now starts from federal adjusted gross income and the state Earned Income Tax Credit is reset to 125% of the federal credit with a $200 cap.
- May 1: Aiken County reimposes a capital projects tax and Williamsburg County adds one, taking both to an 8% general combined rate.
- First weekend of August: the annual Sales Tax Holiday exempts qualifying clothing, computers and school supplies from state and local tax.
- Through the year: the Department of Revenue publishes 2026 withholding tables and a withholding formula adjusted for the new law, so a payroll setup carried forward from 2025 is out of date.
- April 15, 2027: the first return under the new system, the 2026 SC1040, is due.
The rest of this article explains what each change means for a South Carolina paycheck, then covers the rules that stayed put.
Two rates and a $966 subtraction: the new formula
The old three-bracket table is gone. For 2026, taxable income under $30,000 is taxed at a flat 1.99%. At $30,000 or more, the tax is 5.21% of taxable income minus $966. The subtraction keeps the two ranges continuous, so nobody faces a cliff at $30,000. On $50,000 of taxable income the math is $50,000 times 5.21% less $966, which comes to $1,639 before credits.
That $1,639 is not 5.21% of a $50,000 salary. It is 5.21% of taxable income, which sits well below gross pay once the SCIAD and other subtractions come off. Getting the taxable figure right is where the work is.
The credit side changed too. A full-year resident can claim a nonrefundable South Carolina Earned Income Tax Credit equal to 125% of the federal EITC, capped at $200. Because it is nonrefundable it can only reduce tax owed, not produce a refund on its own.
SCIAD, the deduction that shrinks as income rises
Instead of borrowing the federal standard deduction, South Carolina now grants its own. The full 2026 SCIAD is $15,000 for single and married-filing-separately filers, $22,500 for heads of household and $30,000 for joint filers and surviving spouses. It phases down once federal adjusted gross income passes a threshold and disappears entirely above a ceiling.
| Filing status | Full SCIAD | Phaseout begins (federal AGI) | Gone at or above |
|---|---|---|---|
| Single or married filing separately | $15,000 | $40,000 | $95,000 |
| Head of household | $22,500 | $60,000 | $142,500 |
| Married filing jointly or surviving spouse | $30,000 | $80,000 | $190,000 |
Inside the range the reduction uses a filing-status-specific fraction, rounded down to the next $10. Nonresidents filing Schedule NR get a SCIAD prorated by the share of their federal AGI that is South Carolina-sourced. The order of operations on the 2026 SC1040 is federal AGI, state additions and subtractions, SCIAD, other allowed deductions, then the 1.99% or 5.21% formula, then credits.
A tire plant operator's biweekly check in Greenville
The Upstate's manufacturing belt supplies the example: a tire plant operator in Greenville earning $23 an hour, 40 hours a week, single, paid every two weeks. Online Paystub's South Carolina paycheck calculator produced the following breakdown for one 80-hour period.
| Line | Amount per check |
|---|---|
| Gross pay (80 hours at $23.00) | $1,840.00 |
| Federal income tax | $136.95 |
| South Carolina state income tax | $85.17 |
| Social Security (6.2%) | $114.08 |
| Medicare (1.45%) | $26.68 |
| Estimated take-home pay | $1,477.12 |
Figures come from the Online Paystub South Carolina paycheck calculator for 2026. Local taxes, health premiums and retirement contributions are not included.
The South Carolina line is a withholding estimate, not the final tax. Under Act 110 the annual liability is settled on the 2026 SC1040 using the SCIAD and the two-rate formula, so the amount withheld across 26 checks and the amount owed for the year can differ. A new hire who never files an SC W-4 is withheld at zero allowances, which pushes that line higher than it needs to be.
Six percent at the register, plus whatever the county voted for
South Carolina's state sales and use tax is 6%. Counties and certain districts add local taxes, most of them 1% each under Department of Revenue administration, though several can overlap and transportation taxes use their own rates. Combined rates therefore run from 6% in places with no local levy to 9% at the top. The 2026 county changes listed above are the reason to check the current rate table for the delivery location rather than a statewide figure.
Unprepared food that qualifies for USDA food benefits is exempt from the 6% state tax, but some local taxes still apply to groceries, so the checkout total depends on the county. Prescription medicine and textbooks are exempt. Restaurant meals, accommodations, laundry services and communications services are taxed.
Anyone selling at retail needs a Retail License for each outlet, remote sellers included once South Carolina gross revenue exceeds $100,000 in the previous calendar year. State and local taxes go on one return through MyDORWAY. Filers with $15,000 or more of tax per period must file electronically. A tire plant's sales tax and its employees' withholding are separate systems. Retail tax never belongs on a wage statement.
What did not change: the $7.25 floor and Section 41-10-30
South Carolina has no state minimum wage law, so the federal $7.25 an hour governs covered employers, along with federal overtime at one and a half times the regular rate after 40 hours. Nothing in Act 110 touched that.
Section 41-10-30 of the South Carolina Code still requires covered employers to give each employee an itemized statement showing gross pay and deductions every pay period and to keep wage and deduction records for three years. Employers with fewer than five employees in the preceding twelve months and certain domestic employers are exempt. The statement should let a worker reconcile the check against hours and rate without guesswork, which is what Online Paystub's South Carolina pay stub generator produces from verified payroll figures.
Two withholding mechanics also carried over. South Carolina keeps its own SC W-4 because state withholding still uses allowances, so new hires complete it alongside the federal W-4. Unemployment insurance remains an employer-only tax on the first $14,000 of each worker's wages, at a rate set by the employer's tax class, never a deduction from pay. Estimated payments on the SC1040ES are required when you expect to owe $100 or more after withholding and credits, which is common for anyone paid as an independent contractor alongside a wage job.
Frequently Asked Questions
What is the South Carolina income tax rate for 2026?
1.99% on taxable income under $30,000. At $30,000 or more, the tax is 5.21% of taxable income minus $966.
Do I still get the federal standard deduction on my South Carolina return?
Not for 2026. The state now uses the SCIAD, $15,000 for a single filer, which phases out between $40,000 and $95,000 of federal adjusted gross income.
Why is my state withholding different from what the new formula predicts?
Withholding is a prepayment computed from the 2026 tables and your SC W-4 allowances. The annual SC1040 applies the SCIAD and the two-rate formula, so the two rarely match exactly.
Are groceries taxed in South Carolina?
Qualifying unprepared food is exempt from the 6% state tax, but some local sales taxes still apply to it, so the answer depends on the county.
Does South Carolina have its own minimum wage?
No. The federal $7.25 rate applies to covered employers.