South Dakota has no state income tax. Your only income tax obligations are federal brackets. Calculate your exact marginal and effective federal tax rate below. Formula shown, sources cited — no account required.
South Dakota stands out as one of seven states with no individual income tax. That means no state brackets, no state withholding, and no state return to file each spring. Every dollar earned stays subject only to federal brackets and payroll taxes. For the median South Dakota household earning $76,881, the combined federal effective rate lands in the mid-teens, far below what residents of Wisconsin or Vermont pay in total. The state generates revenue through sales taxes and property taxes instead, spreading the load across consumption rather than income. That structure benefits high earners and savers disproportionately, since investment income and capital gains face zero state tax. Business owners operating as pass-throughs also benefit, keeping more profit inside their households. Use a federal tax bracket calculator to see your exact marginal and effective rates so you can plan contributions to retirement accounts and other deductions strategically.
South Dakota Tax Brackets Explained: No State Tax, Federal Only
South Dakota is one of the nine US states with no state income tax. Residents only pay federal income tax and FICA payroll taxes. This makes South Dakota attractive for high earners — a $200,000 income that would face 9–10% state tax in California or New York faces zero additional state burden here.
The median household in South Dakota earns $76,881/year. At that income (single filer), the federal effective rate is approximately 12–14%, bringing total income tax (federal + state) to roughly 12–14%.
How Marginal vs. Effective Rate Works
The marginal rate is the rate on your last dollar of income — it does not apply to all income. The effective rate is your total tax divided by total income. For example, someone earning $100,000 in South Dakota has a 22% federal marginal rate but an effective federal rate of roughly 15%, because the first $44,725 (2024) is taxed at 10% and 12%, not 22%.