Side-by-side tax comparison between Montana (5.9% top rate) and Oregon (9.9% top rate).
| Salary | Montana | Oregon | Difference | Winner |
|---|---|---|---|---|
| $50K | $40,085 | $37,835 | −$2,250 | Montana |
| $75K | $57,984 | $54,609 | −$3,375 | Montana |
| $100K | $74,465 | $69,965 | −$4,500 | Montana |
| $150K | $106,809 | $100,059 | −$6,750 | Montana |
| $200K | $140,253 | $131,253 | −$9,000 | Montana |
Montana offers higher take-home pay at every salary level. Montana's 5.9% top rate is more favorable than Oregon's 9.9%. At $100K, the difference is $4,500/year — that’s $375/month.
However, cost of living matters. Montana has a cost index of 97 while Oregon is at 110. After adjusting for cost of living, the gap narrows significantly.