SOUTH CAROLINA BONUS TAX · TAX YEAR 2026
South Carolina bonus tax calculator
South Carolina has no bonus tax rate: a bonus is added to the paycheck's pay, and the withholding formula takes up to 6% of it. On a $10,000 bonus with $75,000 of wages, a single filer has $600 of South Carolina tax withheld, plus $2,200 of federal income tax and $765 of Social Security and Medicare, and takes home $6,435. The bonus adds $663 to the year's South Carolina tax, so $63 less is withheld than owed.
Your bonus after tax
- Take-home bonus
- $6,435.00
- Federal income tax
- $2,200.00
- Social Security and Medicare
- $765.00
- South Carolina tax
- $600.00
South Carolina tax for the year
- Withheld from the bonus
- $600.00
- Added by the bonus
- $663.24
- Under-withheld
- $63.24
South Carolina withholding by bonus size
What a single filer with $75,000 of other wages has withheld from bonuses of different sizes, and takes home.
| Bonus | Federal | Social Security and Medicare | State | Take-home |
|---|---|---|---|---|
| $1,000 | $220 | $77 | $60 | $644 |
| $5,000 | $1,100 | $383 | $300 | $3,218 |
| $10,000 | $2,200 | $765 | $600 | $6,435 |
| $25,000 | $5,500 | $1,913 | $1,500 | $16,088 |
| $50,000 | $11,000 | $3,825 | $3,000 | $32,175 |
South Carolina tax withheld vs. owed
The South Carolina tax withheld from a $10,000 bonus against the tax the bonus adds to a single filer's year. Over-withholding comes back in your refund; under-withholding is due when you file.
| Annual wages | Withheld | Tax added | Difference |
|---|---|---|---|
| $40,000 | $600 | $502 | $98 over |
| $75,000 | $600 | $663 | $63 under |
| $150,000 | $600 | $521 | $79 over |
| $300,000 | $600 | $521 | $79 over |
South Carolina bonus tax questions
What is the South Carolina bonus tax rate for 2026?
South Carolina has no bonus tax rate: a bonus is added to the paycheck's pay, and the withholding formula takes up to 6% of it. On a $10,000 bonus that is $600 of South Carolina tax.
Is a bonus taxed more than regular pay in South Carolina?
No. When you file, a bonus is taxed at the same South Carolina rates as the rest of your wages; only the withholding differs. For a single filer with $75,000 of wages, a $10,000 bonus adds $663 to the year's South Carolina tax and has $600 withheld, so $63 less is withheld than owed. The rest is due when you file.
Is all of a South Carolina bonus withheld at 6%?
Usually. The WH-1603F formula annualizes the paycheck's pay, bonus included, and reaches its top rate of 6% at modest annual pay, so most bonuses are withheld at 6%: $600 on a $10,000 bonus. A small bonus on a small paycheck can stay in the lower brackets and be withheld at less.
What the calculator leaves out
- Withholding is the bonus times 6%, the WH-1603F formula's top rate, reached once the pay period's annualized pay passes $18,230 after allowances; a bonus small enough to keep annualized pay below that top bracket is withheld at a lower rate.
- South Carolina has no bonus rate; the bonus is part of the pay period's wages under the WH-1603F formula.
Federal income tax is withheld at the 22% supplemental rate, 37% on supplemental pay above $1,000,000 in a year. Social Security and Medicare treat the bonus as the year's last pay, so wages above $184,500 owe no more Social Security. Filing status changes only the annual comparison.