South Carolina 1099 Tax Calculator
Federal self-employment tax, federal income tax and South Carolina state income tax in one place, using 2026 rates. Enter your 1099 income and expenses.
- You keep $53,234
- SE tax $9,891
- Federal $4,452
- SC $2,423
| Self-employment tax | $9,891 |
| Federal income taxAfter QBI deduction $9,791 | $4,452 |
| South Carolina income taxOn AGI $65,055 · top rate 5.21% | $2,423 |
| Total | $16,766 |
South Carolina income tax rates for 2026
| Taxable income over | Rate (single) |
|---|---|
| $0 | 1.99% |
| $29,999 | 5.21% |
Source: Tax Foundation, Facts & Figures 2026, Table 11 (rates as of April 28, 2026). Joint-filer brackets differ; the calculator uses single brackets for every status, so joint results are conservative. The calculator applies these rates to federal AGI, a close approximation since each state has its own deductions and credits.
How 1099 income is taxed in South Carolina
Every self-employed person in the US pays the same federal self-employment tax: 15.3% on 92.35% of net profit, covering Social Security and Medicare (see the self-employment tax calculator). Federal income tax then applies after the standard deduction, half of SE tax and the 20% QBI deduction. South Carolina then taxes your profit as part of your state income, which is why South Carolina freelancers should set aside a bit more than the federal figure.
Pay the IRS quarterly with the quarterly estimated tax calculator, and make South Carolina estimated payments on its own schedule.
Questions freelancers ask
How much tax do self-employed people pay in South Carolina?
Federal self-employment tax and income tax, plus South Carolina income tax at rates from 1.99% to 5.21%. On $70,000 of net profit (single, 2026) the estimate is about $14,342 federal plus $2,423 to South Carolina, 24.0% of profit in total.
Does South Carolina have its own self-employment tax?
No state charges a separate self-employment tax; the 15.3% Social Security and Medicare tax is federal only. South Carolina taxes freelance profit as ordinary income on the state return.
Do I need to make South Carolina estimated tax payments?
Most states, including South Carolina, expect quarterly estimated payments from self-employed people whose withholding won't cover the year's state tax, generally on or near the federal due dates. Check the South Carolina revenue department for the exact threshold and vouchers.
How much should a South Carolina freelancer set aside for taxes?
With the example above, about 21% of every client payment. Your figure depends on income, expenses and filing status; the calculator on this page works it out.