Side-by-side tax comparison between Colorado (4.4% top rate) and Montana (5.9% top rate).
| Salary | Colorado | Montana | Difference | Winner |
|---|---|---|---|---|
| $50K | $40,648 | $40,085 | −$563 | Colorado |
| $75K | $58,828 | $57,984 | −$844 | Colorado |
| $100K | $75,590 | $74,465 | −$1,125 | Colorado |
| $150K | $108,496 | $106,809 | −$1,688 | Colorado |
| $200K | $142,503 | $140,253 | −$2,250 | Colorado |
Colorado offers higher take-home pay at every salary level. Colorado's 4.4% top rate is more favorable than Montana's 5.9%. At $100K, the difference is $1,125/year — that’s $94/month.
However, cost of living matters. Colorado has a cost index of 105 while Montana is at 97. With similar costs of living, the tax difference is the main factor.