South Dakota does not have a state income tax

South Dakota is one of nine states with no state income tax on wages, salaries, or other personal income. This means you will not owe South Dakota income tax on money you earn, regardless of whether you work in the state or live there year-round. The state funds its operations through sales tax, property tax, and other revenue sources instead.

If you live or work in South Dakota, this affects what you file with the state — but it does not change your federal tax obligations. You still owe federal income tax to the IRS on all income, and you may owe income tax to another state if you work or live there part of the year.

Key Takeaways

  • South Dakota collects no state income tax on wages, salaries, self-employment income, or investment gains.
  • You still owe federal income tax to the IRS even if you live in South Dakota.
  • If you work in South Dakota but live in another state, that other state may tax your income depending on its laws and your residency status.
  • South Dakota does tax certain business entities, including S-corporations and partnerships, through a different mechanism than personal income tax.
  • Sales tax in South Dakota is 4.5 percent at the state level, with local taxes added on top, which is how the state replaces income tax revenue.

What income South Dakota does not tax

South Dakota imposes no tax on ordinary income sources: wages from employment, self-employment income, interest, dividends, capital gains, retirement distributions, or Social Security benefits. You will receive no state tax forms from South Dakota employers or financial institutions, and you will not file a South Dakota state income tax return.

This applies whether you are a full-time resident, a part-time resident, or someone who moved to South Dakota during the tax year. The state does not distinguish between these situations for income tax purposes because there is no income tax to file.

How South Dakota taxes business income differently

Although South Dakota has no personal income tax, it does tax certain business structures. S-corporations, partnerships, and limited liability companies (LLCs) taxed as partnerships must file a South Dakota tax return and pay tax on net income at a rate of 3.99 percent. This is separate from federal taxation and applies to the business entity itself, not to you as an individual owner.

Sole proprietors do not file a separate South Dakota business tax return. If you are self-employed as a sole proprietor, you report your business income on your federal tax return but not to South Dakota. C-corporations incorporated in South Dakota pay corporate income tax at 6.0 percent, also separate from personal income tax.

If you work in South Dakota but live elsewhere

Your home state — the state where you are considered a resident for tax purposes — determines whether you owe state income tax on wages earned in South Dakota. Most states tax residents on all income, regardless of where it is earned. If you live in a state with income tax and work in South Dakota, you typically owe tax to your home state, not to South Dakota.

Some states have reciprocal agreements that prevent double taxation. For example, if you live in Pennsylvania and work in South Dakota, Pennsylvania may not tax that income. Check your home state's tax agency website or a tax professional to understand how your situation works, because the rules vary by state and depend on your specific residency status.

If you live in South Dakota but work elsewhere

If you are a South Dakota resident but work in another state, that state may tax your wages. Most states tax income earned within their borders by anyone, whether they live there or not. You would owe tax to the state where you work, and South Dakota would owe you nothing because it has no income tax.

Some people work in multiple states during the year. In that case, each state where you earned income may tax that portion of your earnings. Your federal return accounts for all income from all sources, and you may be able to claim a credit on your federal return for taxes paid to other states to avoid double taxation.

How South Dakota replaces income tax revenue

South Dakota funds state services through sales tax, property tax, and other sources. The state sales tax rate is 4.5 percent, and most cities and counties add a local sales tax on top of that. Combined rates typically range from 5.5 percent to 7.5 percent depending on location. This means residents and visitors pay sales tax on most purchases of goods and some services.

Property tax rates in South Dakota vary by county and municipality but are generally moderate compared to national averages. The state also collects tax on motor vehicle registrations, licenses, and certain business activities. These revenue sources replace what other states collect through income tax.

Frequently Asked Questions

Do I have to file a South Dakota tax return?

No. South Dakota has no state income tax, so there is no state tax return to file. You file only with the IRS for federal income tax. If you own an S-corporation, partnership, or LLC taxed as a partnership, your business entity files a separate return, but you do not file a personal return.

If I move to South Dakota, do I get a tax refund from my old state?

That depends on your old state's rules and when you moved. Some states prorate your tax liability based on the number of days you lived there during the year. Contact your former state's tax agency to report your move and ask whether you owe additional tax or may receive a refund. South Dakota will not owe you anything because it has no income tax.

Does South Dakota tax retirement income or Social Security?

No. South Dakota does not tax any form of personal income, including retirement distributions from IRAs and 401(k)s, pension payments, or Social Security benefits. You owe federal tax on these sources if they meet federal thresholds, but nothing to South Dakota.

What if I am a nonresident working in South Dakota temporarily?

South Dakota will not tax your income because it has no state income tax. However, your home state may tax you on that income depending on its residency rules. Contact your home state's tax agency to understand your filing obligations there.

Do I pay more in sales tax to make up for no income tax?

South Dakota's combined state and local sales tax rates are moderate compared to other states without income tax. Whether you pay more or less overall depends on your spending patterns and the specific rates in your county. Someone who spends heavily pays more in sales tax; someone who saves more pays less.