Idaho State Tax Calculator
Calculate your Idaho state income tax combined with federal taxes. Get accurate estimates for tax planning in Idaho.
Idaho Tax Quick Facts
Tax System
Flat Rate
Top Tax Rate
5.8%
Tax Brackets
Flat rate
Standard Deduction
Available
Calculate Your Tax
About Idaho Income Tax
Idaho uses a flat income tax rate of 5.8% for all income levels, recently simplified from a progressive system.
- Flat 5.8% tax rate for all income levels
- Recently moved from progressive to flat tax
- Standard deduction available
- Moderate tax burden compared to national average
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