Side-by-side tax comparison between Oregon (9.9% top rate) and South Dakota (no income tax).
| Salary | Oregon | South Dakota | Difference | Winner |
|---|---|---|---|---|
| $50K | $37,835 | $42,298 | +$4,463 | South Dakota |
| $75K | $54,609 | $61,303 | +$6,694 | South Dakota |
| $100K | $69,965 | $78,890 | +$8,925 | South Dakota |
| $150K | $100,059 | $113,446 | +$13,388 | South Dakota |
| $200K | $131,253 | $149,103 | +$17,850 | 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 Oregon's 9.9% top rate. At $100K, the difference is $8,925/year — that’s $744/month.
However, cost of living matters. Oregon has a cost index of 110 while South Dakota is at 92. After adjusting for cost of living, the gap widens significantly.