Iowa State Tax Calculator
Calculate your Iowa state income tax combined with federal taxes. Get accurate estimates for tax planning in Iowa.
Iowa Tax Quick Facts
Tax System
Flat Rate (2026)
Top Tax Rate
5.7% → 3.9%
Tax Brackets
Moving to flat
Standard Deduction
Available
Calculate Your Tax
About Iowa Income Tax
Iowa is transitioning to a flat income tax rate of 3.9% by 2026, significantly reducing the tax burden for residents.
- Transitioning to flat 3.9% rate by 2026
- Current top rate of 5.7% being phased out
- Major tax reform reducing overall burden
- Standard deduction available
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