Side-by-side tax comparison between Hawaii (11% top rate) and Idaho (5.8% top rate).
| Salary | Hawaii | Idaho | Difference | Winner |
|---|---|---|---|---|
| $50K | $38,173 | $40,123 | +$1,950 | Idaho |
| $75K | $55,115 | $58,040 | +$2,925 | Idaho |
| $100K | $70,640 | $74,540 | +$3,900 | Idaho |
| $150K | $101,071 | $106,921 | +$5,850 | Idaho |
| $200K | $132,603 | $140,403 | +$7,800 | Idaho |
Idaho offers higher take-home pay at every salary level. Idaho's 5.8% top rate is more favorable than Hawaii's 11%. At $100K, the difference is $3,900/year — that’s $325/month.
However, cost of living matters. Hawaii has a cost index of 192 while Idaho is at 95. After adjusting for cost of living, the gap widens significantly.