South Carolina charges 0-6.4% state income tax. Use the overtime tax calculator pre-loaded with South Carolina rates.
Open Overtime Tax Calculator →When you work overtime in South Carolina, each extra hour is subject to federal supplemental withholding (typically 22%), FICA (7.65%), and South Carolina's graduated rate (up to 6.4%) state tax. Without local income taxes, the state rate is the only additional layer. The overtime calculator shows you the real after-tax value of overtime work with South Carolina rates, so you can decide whether extra hours are worth it.
South Carolina uses a graduated income tax with brackets ranging from 0-6.4%. Lower income is taxed at lower rates, with the 6.4% top rate applying only to income in the highest bracket. This progressive structure means your effective state tax rate is always lower than the top marginal rate. South Carolina does not have local income taxes, so the state graduated rate is the total state-level income tax burden.
The table below shows what you actually keep at five salary levels in South Carolina, accounting for federal tax, FICA, and South Carolina's graduated (0-6.4%) state tax.
See how South Carolina compares to other South states. Each link takes you to the overtime tax calculator landing page for that state.
For a comprehensive breakdown of South Carolina’s tax structure, salary comparisons, cost-of-living analysis, and more, visit the full South Carolina take-home pay page.