South Dakota state income tax
Here's the good news for South Dakota residents: South Dakota has no state individual income tax. No state individual income tax. That means no state tax on your wages, and typically no state return to file for earned income — you still owe federal income tax, which is what the brackets below cover.
No income tax doesn't mean no taxes, though. States without an income tax usually lean on other sources — property tax, sales tax, and various fees — to fund services, and those can run higher than in income-tax states. Your total tax burden depends on the whole picture, not just the income line.
2025 federal income tax brackets
For the 2025 tax year (the return you file in 2026), the federal government uses seven tax brackets from 10% to 37%. The brackets are progressive: each slice of your taxable income is taxed at that bracket's rate, not your whole income at the top rate.
Single — 2025
| Tax rate | Taxable income |
|---|---|
| 10% | $0 – $11,924 |
| 12% | $11,925 – $48,474 |
| 22% | $48,475 – $103,349 |
| 24% | $103,350 – $197,299 |
| 32% | $197,300 – $250,524 |
| 35% | $250,525 – $626,349 |
| 37% | $626,350 and up |
Married filing jointly — 2025
| Tax rate | Taxable income |
|---|---|
| 10% | $0 – $23,849 |
| 12% | $23,850 – $96,949 |
| 22% | $96,950 – $206,699 |
| 24% | $206,700 – $394,599 |
| 32% | $394,600 – $501,049 |
| 35% | $501,050 – $751,599 |
| 37% | $751,600 and up |
Head of household — 2025
| Tax rate | Taxable income |
|---|---|
| 10% | $0 – $16,999 |
| 12% | $17,000 – $64,849 |
| 22% | $64,850 – $103,349 |
| 24% | $103,350 – $197,299 |
| 32% | $197,300 – $250,499 |
| 35% | $250,500 – $626,349 |
| 37% | $626,350 and up |
Married filing separately — 2025
| Tax rate | Taxable income |
|---|---|
| 10% | $0 – $11,924 |
| 12% | $11,925 – $48,474 |
| 22% | $48,475 – $103,349 |
| 24% | $103,350 – $197,299 |
| 32% | $197,300 – $250,524 |
| 35% | $250,525 – $375,799 |
| 37% | $375,800 and up |
2025 standard deduction
Most taxpayers subtract the standard deduction from income before the brackets apply. For 2025 the standard deduction is:
| Filing status | 2025 standard deduction |
|---|---|
| Single | $15,000 |
| Married filing jointly | $30,000 |
| Head of household | $22,500 |
| Married filing separately | $15,000 |
You take the standard deduction unless your itemized deductions (mortgage interest, state and local taxes, charitable gifts, etc.) add up to more.
How tax brackets actually work
A common myth is that moving into a higher bracket taxes all of your income at that rate. It doesn't. The brackets are marginal, meaning only the dollars inside each band are taxed at that band's rate — your earlier dollars stay taxed at 10% and 12% no matter how much you go on to earn.
That single misunderstanding causes real financial mistakes: people turn down raises, overtime, or bonuses because they fear being "bumped into the next bracket." You never lose money by earning more — only the portion above each threshold is taxed higher, so your take-home always goes up.
That's also why your effective tax rate — total tax divided by total income — is almost always well below your top bracket. Someone "in the 22% bracket" typically pays an effective rate closer to 11–14%.
A worked example: $75,000 salary, single
Say you're single and earn $75,000 in wages in 2025. You take the $15,000 standard deduction, which leaves $60,000 of taxable income. Here's how that $60,000 moves through the brackets, one band at a time:
| Bracket | Income taxed here | Tax |
|---|---|---|
| 10% | First $11,925 | $1,192.50 |
| 12% | $11,925 – $48,475 | $4,386.00 |
| 22% | $48,475 – $60,000 | $2,535.50 |
| Total | $60,000 taxable | $8,114.00 |
So the total federal income tax is about $8,114. Notice what that means: even though you're "in the 22% bracket," your effective rate on taxable income is roughly 13.5%, and on your full $75,000 salary it's under 11%. The 22% only ever touched the last $11,525.