Side-by-side tax comparison between New Hampshire (no income tax) and Oklahoma (4.5% top rate, graduated). See which state lets you keep more at every salary level, and how cost of living changes the picture.
New Hampshire has no state income tax, while Oklahoma uses a graduated system with rates of 0.25-4.5%. On a $100K salary, this creates a state tax difference of $2,925/year that New Hampshire residents simply don’t pay.
Oklahoma’s graduated brackets mean the gap between these two states widens at higher salaries. At $200K, the state tax difference grows to $5,850/year, while at $50K it’s only $1,463.
New Hampshire wins at 10 out of 10 salary levels tested. The advantage is consistent and significant across the income spectrum.
| Salary | New Hampshire | Oklahoma | Difference | Winner |
|---|---|---|---|---|
| $40K | $34,320 | $33,150 | −$1,170 | New Hampshire |
| $50K | $42,355 | $40,893 | −$1,463 | New Hampshire |
| $60K | $50,390 | $48,635 | −$1,755 | New Hampshire |
| $75K | $61,538 | $59,344 | −$2,194 | New Hampshire |
| $100K | $79,125 | $76,200 | −$2,925 | New Hampshire |
| $120K | $93,195 | $89,685 | −$3,510 | New Hampshire |
| $150K | $113,751 | $109,364 | −$4,388 | New Hampshire |
| $200K | $148,887 | $143,037 | −$5,850 | New Hampshire |
| $250K | $183,264 | $175,952 | −$7,313 | New Hampshire |
| $300K | $215,329 | $206,554 | −$8,775 | New Hampshire |
Take-home pay only tells part of the story. New Hampshire has a cost of living index of 108 while Oklahoma is at 87 (national average = 100).
This is a substantial difference. After adjusting for cost of living, $100K in New Hampshire has purchasing power of $73,264 compared to $87,586 in Oklahoma. Interestingly, Oklahoma wins on purchasing power even though New Hampshire has higher raw take-home pay. The cost of living difference more than offsets the tax advantage.
For a single earner at $100K filing jointly, take-home becomes $84,710 in New Hampshire and $81,785 in Oklahoma \u2014 a difference of $2,925. The gap remains similar regardless of filing status.
On paper, moving from Oklahoma to New Hampshire would save $2,925/year on a $100K salary, or $14,625 over 5 years. But relocation involves real costs: moving expenses, potentially buying/selling a home, changing jobs, and adjusting to a new community.
The $2,925/year savings is meaningful but probably not enough to justify a move on its own. However, combined with other factors like career growth, lifestyle preferences, or family proximity, it could tip the scale.