South Dakota Self-Employment Tax Calculator

South Dakota has no state income tax on earnings, so your bill is federal: self-employment tax plus federal income tax. Enter your numbers for an estimate and a quarterly payment.

Updated October 19, 2026 · 2026 federal and state figures · All states · How we calculate

Your year working for yourself

The numbers below are examples. Replace them with your own year-to-date or expected annual figures.

Income for the year ($)

Freelance, 1099 or gig income ($)Everything you earned working for yourself this year.

Other self-employment income ($)A second client, side business or app.

Other business income ($)Commissions, tips, anything else.

Business expenses

Business expenses for the year ($)Mileage, software, tools, phone share, supplies, professional fees.

Dedicated home office size (sq ft)Simplified method: $5 per sq ft, up to 300 sq ft. Enter 0 if you do not qualify.

Tax settings: filing status, state, other income

Filing status

Other W-2 income ($)Wages from a regular job, if any.

Your stateUses the 2026 state income tax brackets. Local taxes are not included.

Or enter your own state tax rate (%)Optional. Leave blank to use the state above.

State tax uses each state’s 2026 brackets and common deductions. City and county taxes are not included. State-by-state guide.

Your results

Enter your numbers to see your estimate.

Your results

Enter your numbers to see your estimate.

South Dakota income tax in 2026

South Dakota does not tax wages or self-employment income at the state level. You still owe federal self-employment tax (15.3% on 92.35% of net profit) and federal income tax, and you pay them through quarterly estimated payments to the IRS.

What it means in dollars

For a South Dakota freelancer or gig worker with $55,000 of income and $5,000 of business costs (net profit $50,000, single filer, no other income), we estimate self-employment tax of $7,065, federal income tax of $2,667 and no state income tax. The total is about $9,732, or 19.5% of profit, which is $2,433 per quarter.

Local taxes and special rules in South Dakota

We have not flagged a widely applicable city or county income tax for South Dakota, but some localities charge their own taxes or fees on self-employment income. Check with your city and county.

Estimated payments in South Dakota

Because South Dakota has no state income tax, there are no state estimated payments for income tax. Your federal payments follow the usual dates: April 15, June 15, September 15 and January 15. See the due dates guide.

Frequently asked questions

Does South Dakota have a state income tax?

No. South Dakota does not tax wages or self-employment income at the state level. Federal self-employment tax and income tax still apply.

How much should I set aside for taxes in South Dakota?

For $50,000 of net profit our estimate is about 19.5%, including federal and no state income tax and self-employment tax. Your own figure depends on income, filing status and other income, so use the calculator above.

Do I pay South Dakota estimated taxes as a freelancer or gig worker?

There is no state income tax to prepay, but federal estimated payments still apply.

Are there local taxes on self-employment income in South Dakota?

This calculator does not include city or county taxes. Check with your local government for South Dakota.

Sources

Estimates only, not tax advice. State rules change, and city, county and special taxes are not included. See our disclaimer.

Other states

Not in South Dakota? Use the state tax guide or pick any state in the calculator above. Related tools: self-employed tax calculator, quarterly tax calculator, 1099 vs W-2.