South Carolina Paycheck Calculator

Four tax lines come out of a South Carolina paycheck: federal income tax, Social Security (6.2% up to $184,500), Medicare (1.45%), and South Carolina state withholding. No South Carolina city or county taxes wages, and the state has no disability, paid-leave, or other employee payroll premium. Anything else on your stub is your own election: 401(k), health premiums, HSA, and similar benefits.

The WH-1603F formula annualizes your pay, subtracts $5,000 for each allowance on your SC W-4, and subtracts a standard deduction of 10% of wages up to $7,500. It then withholds 0% on the first $3,640, 3% up to $18,230, and $437.70 plus 6% above that, with the same schedule for every filing status. Enter your SC W-4 allowances in the South Carolina exemptions field. On the real form, claiming zero allowances also removes the standard deduction; this calculator always applies it.

Act 110 of 2026, signed March 30, 2026, replaced the return-side rates for tax year 2026 with 1.99% on taxable income up to $29,999 and 5.21% above, plus a new deduction that phases out with income. The Department of Revenue said it would adjust the withholding tables, and as of September 14, 2026 it had not published new ones. Paychecks therefore still follow the 3% and 6% formula shown here, and any gap between withholding and your actual tax settles when you file your 2026 return.

Compared with 2025, the 2026 withholding formula raised the allowance from $4,860 to $5,000, lifted the standard deduction cap from $7,300 to $7,500, and lowered the top withholding rate from 6.2% to 6%. South Carolina has no reciprocity agreements with other states. This page will move to the new tables once SCDOR posts them at dor.sc.gov/withholding.