South Carolina Collects State Income Tax on Wages and Investment Income

Yes, South Carolina has a state income tax. The state taxes wages, salaries, interest, dividends, and other forms of income. Unlike some states that tax only certain types of income, South Carolina applies its income tax broadly to most sources of earnings.

The tax is progressive, meaning the rate increases as your income rises. South Carolina's income tax rates range from 0% to 7%, depending on your filing status and total income. You file state taxes separately from federal taxes, and the state uses its own forms and important date.

Key Takeaways

  • South Carolina taxes most income at rates between 0% and 7%, with higher earners paying the top rate.
  • The state taxes wages, investment income, retirement distributions, and self-employment income.
  • You must file a South Carolina state return if your income exceeds the filing threshold for your situation, even if you owe no tax.
  • South Carolina offers a standard deduction and allows itemized deductions, similar to federal tax rules.
  • Certain types of income, including Social Security benefits and some retirement accounts, may be partially or fully exempt from state tax.

South Carolina Income Tax Rates and Brackets

South Carolina's income tax brackets change each year based on inflation adjustments. The state uses six tax brackets for single filers and six for married couples filing jointly. The lowest bracket starts at 0% for the first portion of income, and the highest bracket reaches 7% for income above a certain threshold.

Your actual tax rate depends on your total income and filing status. A single person earning $35,000 pays a different effective rate than someone earning $100,000. The state publishes updated brackets each January, so the exact dollar amounts where rates change shift annually. You can find the current year's brackets on the South Carolina Department of Revenue website.

What Income Gets Taxed in South Carolina

South Carolina taxes wages and salaries, interest and dividend income, capital gains, rental income, and self-employment income. If you receive a W-2 from an employer, that income is subject to state tax. If you earn money from investments or own a business, that income is also taxable at the state level.

Retirement distributions from traditional IRAs and 401(k) plans are taxable as income in the year you withdraw them. However, South Carolina offers a retirement income exclusion that may reduce or eliminate the tax on certain retirement income if you meet age and income requirements. Social Security benefits are generally not taxed by South Carolina, even though they may be taxed at the federal level.

Filing Requirements and important date

You must file a South Carolina state return if your income exceeds the filing threshold for your situation. The threshold varies based on age and filing status. For the 2024 tax year, a single person under 65 with income above roughly $12,550 must file, though this amount changes annually. If you are 65 or older, the threshold is higher.

South Carolina follows the federal tax important date: returns are due by April 15 unless that date falls on a weekend or holiday. You can request an extension to October 15 if you need more time. The state accepts returns filed electronically through approved software or through a tax professional. If you owe money, you should file and pay by the important date to avoid penalties and interest.

Deductions and Credits Available in South Carolina

South Carolina allows you to claim either the standard deduction or itemized deductions, similar to federal tax rules. The standard deduction amount changes each year and depends on your age and filing status. If you are 65 or older, you receive an additional standard deduction.

The state also offers several tax credits that can reduce the amount of tax you owe. These include credits for dependent children, education-related expenses, and property taxes paid. 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 your tax liability to zero. Review the South Carolina Department of Revenue website or speak with a tax professional to determine which credits explore to your situation.

Retirement Income and Special Exemptions

South Carolina provides a retirement income exclusion that may exempt a portion of your retirement income from state tax. If you are 59½ or older and receive income from a traditional IRA, 401(k), pension, or annuity, you may may have access to. The exclusion amount depends on your total income and filing status, and there are income limits above which the exclusion phases out.

Military retirement pay receives special treatment under South Carolina law. Active duty military members and retirees may be exempt from state income tax on military retirement income if they meet certain conditions. Federal employees' retirement income also receives favorable treatment in some cases. Additionally, income from certain state and local bonds is exempt from South Carolina income tax.

How to File Your South Carolina State Return

You can file your South Carolina return using tax preparation software, by mail, or through a tax professional. The state does not offer free filing directly through its website, but you can use IRS-approved software providers that offer free federal and state filing if your income is below a certain threshold. Many of these providers charge a fee for state returns even when federal filing is free.

If you file by mail, you will need Form SC 1040 (the state income tax return) and any supporting schedules for your situation. Mail your return to the address shown in the tax instructions. If you file electronically, the return is processed faster and you receive confirmation of receipt. Keep a copy of your return and all supporting documents for your records for at least three years.

Frequently Asked Questions

Do I have to pay South Carolina income tax if I work in the state but live elsewhere?

Yes, South Carolina taxes income earned within the state regardless of where you live. If you work in South Carolina but live in another state, you may owe taxes to both states. However, most states offer a credit for taxes paid to other states to prevent double taxation. Check with both states' tax departments about your specific situation.

Is Social Security taxed by South Carolina?

No, South Carolina does not tax Social Security benefits. Even if your federal return includes Social Security income, you do not report it on your South Carolina return. This applies to all Social Security recipients, regardless of age or income level.

What happens if I don't file a South Carolina return when I'm supposed to?

If you fail to file when required, South Carolina may assess penalties and interest on any tax owed. The penalty for late filing is typically 5% per month of the unpaid tax, up to 25%. Interest accrues daily on unpaid taxes. If you realize you missed a important date, file as soon as possible to minimize penalties.

Can I claim dependents on my South Carolina return?

Yes, you can claim dependents on your South Carolina return using the same rules as your federal return. South Carolina allows a dependent exemption for each may have access to dependent, which reduces your taxable income. The exemption amount changes annually and is set by the state.

Do I need to make estimated tax payments to South Carolina?

If you are self-employed or have income not subject to withholding, you may need to make quarterly estimated tax payments to South Carolina. The state requires estimated payments if you expect to owe $400 or more in state tax for the year. Payments are due on April 15, June 15, September 15, and January 15 of the following year.