Side-by-side tax comparison between Oklahoma (4.75% top rate) and South Dakota (no income tax).
| Salary | Oklahoma | South Dakota | Difference | Winner |
|---|---|---|---|---|
| $50K | $40,516 | $42,298 | +$1,781 | South Dakota |
| $75K | $58,631 | $61,303 | +$2,672 | South Dakota |
| $100K | $75,328 | $78,890 | +$3,563 | South Dakota |
| $150K | $108,102 | $113,446 | +$5,344 | South Dakota |
| $200K | $141,978 | $149,103 | +$7,125 | South Dakota |
South Dakota offers higher take-home pay at every salary level. With no state income tax, South Dakota gives you a significant advantage over Oklahoma's 4.75% top rate. At $100K, the difference is $3,563/year — that’s $297/month.
However, cost of living matters. Oklahoma has a cost index of 87 while South Dakota is at 92. With similar costs of living, the tax difference is the main factor.