Side-by-side tax comparison between Iowa (3.8% top rate, flat) and Michigan (4.25% top rate, flat). See which state lets you keep more at every salary level, and how cost of living changes the picture.
Iowa uses a flat income tax (3.8% flat) while Michigan has a flat system (4.25% flat + local). On a $100K salary, Iowa takes $3,800 in state and local taxes compared to Michigan’s $5,750 \u2014 a difference of $1,950.
Both states use flat brackets, but Michigan’s top rate of 4.25% is higher than Iowa’s 3.8%.
Michigan also has local income taxes (estimated at $1,500/year on $100K), which Iowa does not.
Iowa wins at 10 out of 10 salary levels tested. The advantage exists but is modest across the income spectrum.
| Salary | Iowa | Michigan | Difference | Winner |
|---|---|---|---|---|
| $40K | $32,800 | $32,020 | −$780 | Iowa |
| $50K | $40,455 | $39,480 | −$975 | Iowa |
| $60K | $48,110 | $46,940 | −$1,170 | Iowa |
| $75K | $58,688 | $57,225 | −$1,463 | Iowa |
| $100K | $75,325 | $73,375 | −$1,950 | Iowa |
| $120K | $88,635 | $86,295 | −$2,340 | Iowa |
| $150K | $108,051 | $105,126 | −$2,925 | Iowa |
| $200K | $141,287 | $137,387 | −$3,900 | Iowa |
| $250K | $173,764 | $168,889 | −$4,875 | Iowa |
| $300K | $203,929 | $198,079 | −$5,850 | Iowa |
Take-home pay only tells part of the story. Iowa has a cost of living index of 89 while Michigan is at 91 (national average = 100).
With similar costs of living (89 vs 91), the tax difference is the primary factor. What you see in raw take-home pay is essentially what you get in purchasing power: $84,635 in Iowa vs $80,632 in Michigan.
For a single earner at $100K filing jointly, take-home becomes $80,910 in Iowa and $78,960 in Michigan \u2014 a difference of $1,950. The gap remains similar regardless of filing status.
On paper, moving from Michigan to Iowa would save $1,950/year on a $100K salary, or $9,750 over 5 years. But relocation involves real costs: moving expenses, potentially buying/selling a home, changing jobs, and adjusting to a new community.
At $1,950/year, the tax difference alone likely isn’t worth relocating for. Other factors — job market, lifestyle, family — should drive the decision. The tax savings are a nice bonus if you’re already considering the move for other reasons.