Idaho Income Tax Brackets 2026
Idaho uses a flat income tax system with 1 bracket.
State Tax
5.8%
Top marginal rate
COL Index
97
Below national avg
Median Income
$70,214
Household
Brackets
1
Flat tax
Idaho Tax Brackets
| Income Range | Marginal Rate |
|---|---|
| $0 — and above | 5.80% |
Idaho State Tax at Different Income Levels
| Gross Income | State Tax | Effective Rate |
|---|---|---|
| $50,000 | $2,900 | 5.80% |
| $75,000 | $4,350 | 5.80% |
| $100,000 | $5,800 | 5.80% |
| $150,000 | $8,700 | 5.80% |
| $200,000 | $11,600 | 5.80% |
| $300,000 | $17,400 | 5.80% |
Calculate Your Exact Idaho Taxes
See your full federal + state + FICA breakdown with our interactive calculator.
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Frequently Asked Questions about Idaho Taxes
Does Idaho have state income tax?
Idaho has a progressive income tax system with rates ranging from 5.8% to 5.8% for 2026.
How much is federal tax in Idaho?
Federal income tax in Idaho is the same as in all other US states. For 2026, the federal brackets range from 10% to 37%, depending on your taxable income and filing status.
What is the cost of living in Idaho?
The cost of living in Idaho has an index of 97, where 100 is the national average. This means Idaho is 3% cheaper than the average US state.