2026 tax year · South Dakota
Quarterly tax calculator for South Dakota
A $50,000 1099 year in South Dakota means about $2,190 to the IRS four times a year, and nothing to the state.
Switching state opens that state's page.
Line 24 of your prior 1040, unlocks the prior-year safe harbor.
Above $150,000 the prior-year target rises to 110%.
Enter what you expect to earn and press Calculate to see each payment.
The South Dakota payment schedule on $50,000
A single filer with $50,000 of net 1099 profit, taking the standard deduction and paying 90% of this year's liability:
| Due | Income earned | To the IRS | To South Dakota |
|---|---|---|---|
| April 15, 2026 | Jan 1 - Mar 31 | $2,190 | , |
| June 16, 2026 | Apr 1 - May 31 | $2,190 | , |
| September 15, 2026 | Jun 1 - Aug 31 | $2,190 | , |
| January 15, 2027 | Sep 1 - Dec 31 | $2,190 | , |
| Year | $8,759 | , | |
The South Dakota side of each payment
South Dakota has no personal income tax for 2026, so there is no state estimated payment to make. Everything in the schedule above goes to the IRS.
That does not reduce the federal side: self-employment tax and federal income tax are owed in full, which is why the $50,000 example still needs $2,190 a quarter.
What each quarter costs at three income levels in South Dakota
A single filer taking the standard deduction, at three levels of net profit. The federal column moves with the self-employment tax and the federal brackets; the South Dakota column moves with South Dakota's own rules, so the two do not scale together. Use the calculator above for the other filing statuses:
| Net 1099 profit | Per quarter to the IRS | Per quarter to South Dakota | Effective rate |
|---|---|---|---|
| $25,000 | $923 | , | 16.4% |
| $50,000 | $2,190 | , | 19.5% |
| $100,000 | $5,032 | , | 22.4% |
Staying inside the safe harbor
Payments are required once you expect to owe $1,000 or more, which the $50,000 example above does, at $9,732 for the year. Two targets avoid a penalty and you need only the lower; the hub explains both routes and the penalty.
What a quarter costs in the states South Dakota borders
On $50,000, South Dakota charges $0 of state income tax. Of the 6 states it borders, Wyoming is the lightest at nothing at all and Minnesota the most expensive at $2,932, a spread of $2,932 on the same income.
| State | State tax per quarter | vs South Dakota |
|---|---|---|
| Wyoming | No income tax | same |
| North Dakota | $22 | +$22 a quarter |
| Montana | $404 | +$404 a quarter |
| Iowa | $428 | +$428 a quarter |
| Nebraska | $444 | +$444 a quarter |
| Minnesota | $660 | +$660 a quarter |
- Wyoming works out the same as South Dakota on this income.
- North Dakota would take $98 more, $98 against South Dakota's $0.
- Montana would take $1,797 more, $1,797 against South Dakota's $0.
- Iowa would take $1,900 more, $1,900 against South Dakota's $0.
- Nebraska would take $1,974 more, $1,974 against South Dakota's $0.
- Minnesota would take $2,932 more, $2,932 against South Dakota's $0.
What this schedule assumes
- Single filer, standard deduction, net 1099 profit after expenses, no W-2 withholding.
- Four equal payments rather than annualised income.
- South Dakota collects no income tax, so the state column is empty by design and the federal voucher is your only one.
South Dakota quarterly tax questions
How much should I send each quarter in South Dakota?
On $50,000 of net 1099 profit as a single filer, about $2,190 to the IRS, and nothing to South Dakota, it has no income tax. That is 90% of this year's liability, split four ways.
Does South Dakota require estimated payments?
No. With no state income tax there is no South Dakota estimated payment and no state voucher to file. Your only quarterly obligation is the federal one.