Self employment tax · South Dakota · 2026
South Dakota self employment
tax calculator (2026).
South Dakota has no state income tax on self employment income, so every figure on this page is federal. Income tax is not the only tax a state levies on a business. Enter your net business income to estimate your self employment tax, federal income tax, South Dakota income tax, and the quarterly payment that keeps you out of penalty range, built for self employed service vendors on Schedule C.
Self employment tax is 15.3% on 92.35% of net profit.
Estimate only: not tax, legal, or financial advice, and provided with no warranty of accuracy. Figures are approximations of 2026 federal + state self employment tax and exclude credits, dependents, other deductions, retirement contributions, and QBI phaseouts above $191,950 single / $383,900 married, among other factors. Verify with a licensed tax professional before relying on these numbers.
How South Dakota taxes you
South Dakota has no state income tax on self employment income, so every figure on this page is federal. Income tax is not the only tax a state levies on a business.
State brackets verified 2026-07-29 against the Tax Foundation’s 2026 tables. Federal self employment tax is 15.3% of 92.35% of net income everywhere; only the state portion changes by location.
Worked example
$80,000 net income, single filer.
Estimate only: it excludes credits, dependents, retirement contributions, and QBI phaseouts. Talk to a CPA before you send the IRS a check this size. Plan your quarterly payments →
South Dakota, specifically
No income tax, and South Dakota taxes the sale of services.
South Dakota has no personal income tax, which is why the state line above reads zero. It is one of the few states that taxes services broadly. The Department of Revenue applies sales tax to the gross receipts of all retail sales, including the sale of services, at a state rate of 4.2 percent. A photographer, DJ or coach billing a South Dakota client is selling a service, so whether to register and collect is a live question here in a way it is not in most states.
- Sales tax reaches the gross receipts of retail sales including the sale of services, not goods alone.
- The state sales and use tax rate is 4.2 percent. Municipal rates are published separately by the department.
- Registration and licensing run through the Department of Revenue, which publishes its own guide on who needs a license.
Read on 2026-09-17 from South Dakota Department of Revenue, https://dor.sd.gov/businesses/taxes/sales-use-tax/. State rules change, so treat the source as current and this page as of its date. None of it is tax advice; a CPA licensed in South Dakota is.
South Dakota tax FAQ
Common questions.
- Does South Dakota tax self employment income in 2026? Not as income tax. South Dakota has no state income tax, so the figures on this page are federal self employment tax (15.3%) and federal income tax. That answers income tax only, and income tax is not the only tax a state levies on a business. The South Dakota section on this page covers the sales tax that reaches services.
- How much should I set aside for taxes on $80,000 of net income in South Dakota? On $80,000 of net self employment income (single filer), the estimate is about $11,304 self employment tax, $4,957 federal income tax, and $0 South Dakota income tax: roughly $16,261 total, or about $4,065 per quarter (~20.33% effective). Adjust for your deductions and credits.
- Do I charge South Dakota sales tax on a service? Quite possibly. The Department of Revenue applies sales tax to the gross receipts of all retail sales, and it names the sale of services alongside goods. The state rate is 4.2 percent with municipal rates on top. Check the department's guide for whether your work needs a license and whether any exemption reaches it.
- When are quarterly estimated taxes due? Federal estimated payments are generally due April 15, June 15, September 15, and January 15. The safe harbor minimum is 100% of last year's tax (110% if your AGI was over $150,000). Pay that across four quarters and you avoid the underpayment penalty regardless of how your income spikes.
- Is a deposit I collect through BookNox taxable? Yes. A deposit is income in the year you receive it, the same as any other booking revenue. BookNox uses Stripe Connect direct charges, so the money lands in your own bank account and you report it like any self employment income.
Keep comparing
More state calculators.
- South Carolina: SE tax, federal, and the South Carolina state line with the quarterly estimate.
- Tennessee: SE tax, federal, and the Tennessee state line with the quarterly estimate.
- New York: SE tax, federal, and the New York state line with the quarterly estimate.
- California: SE tax, federal, and the California state line with the quarterly estimate.
- Texas: SE tax, federal, and the Texas state line with the quarterly estimate.
- Florida: SE tax, federal, and the Florida state line with the quarterly estimate.
- Illinois: SE tax, federal, and the Illinois state line with the quarterly estimate.
- Georgia: SE tax, federal, and the Georgia state line with the quarterly estimate.
- Kansas: SE tax, federal, and the Kansas state line with the quarterly estimate.
Book the work. Then handle the tax.
The same tax dollar hits whether you book the client this week or next month. BookNox helps South Dakota service vendors close inquiries on the spot: quote, sign, and take the deposit in one link, $29/month flat.