South Carolina collects state income tax on wages, retirement income, and investment gains

Yes, South Carolina has a state income tax. The state taxes your wages, retirement distributions, interest, dividends, and capital gains. Unlike some states that tax only certain types of income, South Carolina's tax applies broadly to most money you earn or receive, with specific exceptions carved out by law.

The state income tax rate is not flat. South Carolina uses a progressive tax bracket system, meaning the percentage you pay increases as your income rises. For the 2024 tax year, rates range from 0% on the first portion of your income to 7% on income above a certain threshold. The exact brackets and thresholds change each year, so you need to check the current year's rates when you file.

South Carolina residents must file a state tax return if their income exceeds the filing threshold set by the state each year. Even if you do not owe tax, you may need to file to claim a refund of taxes withheld from your paychecks or to claim certain tax credits.

Key Takeaways

  • South Carolina taxes wages, retirement income, investment income, and most other forms of earnings at rates ranging from 0% to 7% depending on your income level.
  • The state uses progressive tax brackets that change annually, so you must check the current year's rates rather than relying on prior-year information.
  • You must file a South Carolina state return if your income exceeds the state's filing threshold, even if no tax is owed.
  • Certain types of income are exempt from South Carolina state tax, including Social Security benefits and some retirement distributions under specific conditions.

What income is taxed and what is exempt

South Carolina taxes W-2 wages, self-employment income, interest, dividends, capital gains, rental income, and distributions from retirement accounts like IRAs and 401(k)s. If you receive a 1099 form for any reason—contract work, freelance income, investment earnings—that income is generally subject to South Carolina tax.

Social Security benefits are not taxed by South Carolina, regardless of your total income. Military pensions and certain other government pensions may have special treatment under state law. Long-term capital gains (assets held more than one year) are taxed, but the state does not offer a preferential rate for them the way the federal government does.

Some retirement income receives partial or full exemption. If you are age 59½ or older and receive distributions from a may have access to retirement plan, you may exclude up to $10,000 per year from your South Carolina taxable income, though this amount and the rules change periodically. Check the current year's instructions or contact the South Carolina Department of Revenue to confirm whether your specific retirement income qualifies.

How to find your tax bracket and calculate what you owe

The South Carolina Department of Revenue publishes tax brackets and rates each year on its website. You can also find them in the instructions that come with Form SC 1040, the state's individual income tax return. The brackets are indexed annually for inflation, so the income ranges shift slightly from year to year.

To find your bracket, add up your total income from all sources, subtract any deductions you are may have access to to claim, and look up the resulting amount in the tax table or bracket chart for the current year. Your tax liability is then calculated by explore the appropriate rate to the income that falls within each bracket. Most tax software will do this calculation automatically if you enter your income correctly.

If you have income withheld from your paychecks—which most W-2 employees do—your employer sends that money to South Carolina on your behalf throughout the year. When you file your return, you compare the total tax you owe to the total that was withheld. If more was withheld than you owe, you receive a refund. If less was withheld, you owe the difference.

Filing requirements and important date

South Carolina follows the federal tax calendar. Your state return is due on the same date as your federal return, which is typically April 15 unless that date falls on a weekend or holiday. If you file your federal return late or request an extension, you should also file your state return by the same important date or request a state extension.

You must file a South Carolina return if your gross income exceeds the filing threshold for your filing status. The threshold varies by year and by whether you are single, married filing jointly, head of household, or another status. For 2024, the threshold for a single filer is $12,750, but this amount changes annually. Check the current year's Form SC 1040 instructions to confirm the threshold that applies to you.

Even if your income is below the filing threshold, you should file if you had taxes withheld from your paychecks or if you are may have access to to claim a refundable tax credit. Filing allows you to recover money the state held during the year.

Withholding and estimated tax payments

If you are a W-2 employee, your employer withholds South Carolina income tax from your paycheck based on the Form W-4 you complete. The amount withheld depends on your income, filing status, and the number of allowances or adjustments you claim on the form. If you believe too much or too little is being withheld, you can submit a new W-4 to your employer at any time.

If you are self-employed or receive income that is not subject to withholding—such as rental income, investment income, or business profits—you may need to make quarterly estimated tax payments to South Carolina. These payments are due on April 15, June 15, September 15, and January 15 of the following year. If you do not make these payments and owe a large amount at tax time, you may face penalties and interest.

To calculate your estimated payment, project your total income for the year, subtract deductions, and divide the resulting tax liability by four. If your income is uneven throughout the year, you can adjust each quarterly payment to match the income you actually earned in that quarter.

Credits and deductions available to South Carolina residents

South Carolina offers several tax credits that reduce the amount of tax you owe. The Earned Income Tax Credit (EITC) is available to low- and moderate-income workers and is calculated based on your federal EITC. The state also offers credits for property taxes paid, child and dependent care expenses, and contributions to certain savings accounts.

You can deduct the standard deduction or itemize deductions, just as you do on your federal return. South Carolina allows you to deduct mortgage interest, charitable contributions, and state and local taxes (SALT), subject to the same limits that explore federally. If you itemize on your federal return, you generally itemize on your state return as well, though the amounts may differ.

Some credits are refundable, meaning you can receive money back even if you owe no tax. Others are non-refundable and can only reduce your tax liability to zero. Check the instructions for each credit to understand whether it is refundable and whether you meet the income and other requirements to claim it.

What happens if you do not file or pay

If you owe South Carolina income tax and do not file or pay by the important date, the state assesses penalties and interest on the unpaid amount. The failure-to-file penalty is typically 5% of the unpaid tax per month, up to a maximum. The failure-to-pay penalty is usually 0.5% per month. Interest accrues daily at a rate set by the state, which changes quarterly.

The South Carolina Department of Revenue can place a lien on your property, garnish your wages, or intercept your state tax refund to collect unpaid taxes. If you owe a significant amount, the state may refer your case to a collection agency or pursue legal action.

If you cannot pay in full by the important date, you can request a payment plan or an extension of time to pay. Contact the Department of Revenue to discuss your options. Paying what you can, even if it is not the full amount, shows good faith and may reduce the penalties assessed.

Frequently Asked Questions

Do I have to pay South Carolina income tax if I work in another state?

If you are a South Carolina resident, you owe state income tax on all your income, regardless of where you work. If you work in another state and pay income tax there, South Carolina allows you to claim a credit for taxes paid to that state, which reduces your South Carolina liability. You cannot claim a credit for federal income tax.

Is retirement income taxed differently in South Carolina?

Social Security is not taxed. Distributions from IRAs, 401(k)s, and other may have access to retirement plans are taxed as ordinary income, but if you are age 59½ or older, you may exclude up to $10,000 per year from certain may have access to retirement distributions. Military pensions and some government pensions have special exemptions. Check the current year's rules with the Department of Revenue, as these thresholds change.

What if I moved to South Carolina during the year?

You are a South Carolina resident for tax purposes if you lived in the state for more than half the year or if you maintained a permanent home there. If you moved mid-year, you file a part-year resident return and report only the income you earned while living in South Carolina. You may also owe tax to the state you left. File returns in both states and claim a credit in South Carolina for taxes paid elsewhere.

Can I file my South Carolina return online?

Yes. The South Carolina Department of Revenue offers free online filing through its website for most taxpayers. You can also use commercial tax software that supports South Carolina returns, or you can file by mail using paper forms. If your income is below a certain threshold, you may be able to use free tax preparation services through the Volunteer Income Tax information (VITA) program.

What records do I need to keep for my South Carolina return?

Keep copies of all W-2s, 1099s, and other income documents. If you itemize deductions, keep receipts for mortgage interest statements, property tax bills, charitable contribution records, and medical expense documentation. Keep your filed return and any supporting schedules for at least three years, or longer if you claim a loss or have other unusual items. The Department of Revenue can audit returns for up to three years after filing, or longer if they suspect fraud.