South Carolina does have a state income tax

Yes, South Carolina collects state income tax on wages, retirement income, investment gains, and other earnings. The state tax rate ranges from 0% to 7%, depending on your income bracket. Unlike some states that tax only certain types of income, South Carolina taxes most forms of personal income the same way the federal government does.

South Carolina's tax brackets change each year based on inflation. The lowest bracket starts at 0% for very low incomes, and the highest bracket reaches 7% for incomes above a certain threshold that adjusts annually. You will see state income tax withheld from your paycheck if you work in South Carolina or live there and work elsewhere.

Key Takeaways

  • South Carolina's state income tax rate ranges from 0% to 7% depending on your income level, with rates adjusted yearly for inflation.
  • The state taxes wages, retirement income, investment income, and most other forms of personal income at the same rates.
  • If you work in South Carolina, your employer will withhold state income tax from your paycheck unless you claim an exemption.
  • South Carolina also taxes capital gains, dividends, and interest income, though some retirement income may be partially or fully exempt.
  • You file South Carolina state taxes separately from federal taxes using Form SC 1040, usually due by the same date as federal returns.

How South Carolina's tax brackets work

South Carolina uses a progressive tax system, meaning the rate increases as your income increases. You do not pay the top rate on all your income — you pay the lower rate on the first portion, then the next rate on the next portion, and so on. The exact dollar amounts where each bracket begins change every year.

For the most current year's brackets, you will need to check the South Carolina Department of Revenue website or your tax forms, since the thresholds shift annually. The state publishes updated brackets each tax year. If you are unsure which bracket applies to you, the department's website has a tax calculator and detailed tables showing the exact income ranges.

What types of income South Carolina taxes

South Carolina taxes most income the same way: wages from employment, self-employment income, rental income, interest, dividends, and capital gains all face state income tax. If you receive a W-2 from an employer, that income is taxed. If you receive a 1099 for freelance or contract work, that income is also taxed.

Some types of income receive special treatment. Social Security benefits are generally not taxed by South Carolina. Military retirement pay and some federal pensions may be partially exempt. Certain retirement account withdrawals, like distributions from a traditional IRA or 401(k), are taxed as ordinary income. You should review the Department of Revenue's guidance on your specific income type, since exemptions and partial exclusions exist for certain situations.

Paycheck withholding and W-4 forms

When you start a job in South Carolina, your employer will ask you to complete a W-4 form. This form tells your employer how much state income tax to withhold from each paycheck. The amount withheld depends on your filing status, the number of dependents you claim, and any additional withholding you request.

If you do not want any state income tax withheld, you can claim an exemption on your W-4, but this is rare and usually only applies to people with no tax liability. Most workers have some amount withheld. You can adjust your withholding at any time by submitting a new W-4 to your employer. If too much is withheld, you will receive a refund when you file your return. If too little is withheld, you will owe money.

Filing your South Carolina state tax return

You file South Carolina state taxes using Form SC 1040, which is separate from your federal Form 1040. The state return is due on the same date as your federal return, typically April 15th, though the deadline can shift if April 15th falls on a weekend or holiday. If you file your federal return late, your state return is also considered late.

You can file your state return by mail, through the South Carolina Department of Revenue's online system, or through tax software that supports South Carolina returns. If you owe money, you must pay by the deadline to avoid penalties and interest. If you are owed a refund, filing electronically usually results in a faster refund than filing by mail.

Deductions and credits available in South Carolina

South Carolina allows you to claim either the standard deduction or itemize deductions, similar to federal taxes. The standard deduction amount varies by filing status and age and changes each year. You can find the current year's standard deduction on the Department of Revenue website or your tax forms.

The state also offers tax credits for certain situations, such as property tax relief for seniors and disabled individuals, child and dependent care credits, and education-related credits. Some credits are refundable, meaning you can receive money back even if you owe no tax. Others are non-refundable, meaning they can only reduce the tax you owe to zero. Review the Department of Revenue's list of available credits to see which ones apply to your situation.

Frequently Asked Questions

Do I have to file a South Carolina return if I only lived there part of the year?

If you lived in South Carolina for any part of the tax year and earned income there, you generally must file a state return. You may be considered a part-year resident, and the state will tax only the income you earned while living there. File a part-year resident return and report your income for the months you were in the state.

What happens if I move out of South Carolina during the year?

You file a part-year resident return for the year you move. South Carolina taxes your income only for the months you lived in the state. You will also file a return in your new state for the months you lived there. Both states will receive copies of your W-2, so report your income consistently on both returns.

Is military income taxed by South Carolina?

Military retirement pay is not taxed by South Carolina, which is a significant benefit for retired service members. Active duty military pay is subject to state income tax if you are stationed in South Carolina. Combat zone pay is not taxed by any state. Verify your specific situation with the Department of Revenue if you receive military income.

Can I deduct federal income tax paid from my South Carolina return?

No, South Carolina does not allow you to deduct federal income tax paid. You can deduct state and local taxes (SALT) only if you itemize deductions on your federal return, and that deduction is capped at $10,000 per year. South Carolina's state return does not offer a separate deduction for federal taxes paid.

What if I owe South Carolina taxes but cannot pay by the deadline?

Contact the South Carolina Department of Revenue to discuss payment options. The state may allow you to set up a payment plan or request an extension. Penalties and interest accrue on unpaid taxes, so paying as soon as possible reduces the total amount you owe. The department's website has contact information and forms for requesting relief.