Idaho Tax Brackets
Idaho uses a flat income tax rate of 5.70%. All taxable income is taxed at the same rate regardless of income level.
Total income tax
$18,865
18.9% effective rate
Federal
$13,170
22.0% marginal
State
$5,695
5.70% flat
Taxable income: $83,900 (after $16,100 standard deduction)
Federal bracket breakdown
| Bracket | Rate | Taxable | Tax | Cumulative |
|---|---|---|---|---|
| $0–$12,400 | 10.0% | $12,400 | $1,240 | $1,240 |
| $12,400–$50,400 | 12.0% | $38,000 | $4,560 | $5,800 |
| $50,400–$105,700 | 22.0% | $33,500 | $7,370 | $13,170 |
Based on 2026 federal brackets and Idaho state tax rates. Does not include FICA, local taxes, credits, or itemized deductions.
Idaho income tax rate (2026)
Idaho uses a flat income tax rate of 5.70% on all taxable income. Unlike progressive systems, every dollar is taxed at the same rate.
Idaho tax at different income levels
| Income | Federal tax | State tax | Total tax | Effective rate |
|---|---|---|---|---|
| $50,000 | $3,820 | $2,848 | $6,668 | 13.3% |
| $75,000 | $7,670 | $4,271 | $11,941 | 15.9% |
| $100,000 | $13,170 | $5,695 | $18,865 | 18.9% |
| $150,000 | $24,734 | $8,543 | $33,277 | 22.2% |
Single filer, standard deduction, no other deductions. Income tax only (excludes FICA).
FAQ
What is the income tax rate in Idaho?
Idaho has a flat income tax rate of 5.70%. All income is taxed at the same rate.
How much income tax do I pay in Idaho on $100,000?
On $100,000 as a single filer in Idaho: federal tax of $13,170 (13.2% effective) plus state tax of $5,695 (5.7% effective). Total income tax: $18,865 (18.9% effective rate).
What tax bracket am I in for Idaho?
Idaho uses a flat tax — there is only one bracket at 5.70%. Your federal bracket depends on your taxable income.
Does this include FICA or local taxes?
No. This shows only federal and Idaho state income tax. FICA (Social Security + Medicare) adds ~7.65%. Some cities have additional local taxes. Use our Paycheck Estimator for a complete breakdown.
Other states
- Alabama tax brackets
- Alaska tax brackets
- Arizona tax brackets
- Arkansas tax brackets
- California tax brackets
Related tools
- Idaho Paycheck Estimator — full take-home pay with FICA
- Idaho Bonus Tax Calculator — how bonuses are taxed
- Take-Home Pay by State — compare all 50 states
- Pay Raise Calculator — see how a raise affects your brackets
This calculator uses 2026 tax rates and standard deductions. It does not include FICA, local taxes, credits, AMT, or itemized deductions. Consult a tax professional for advice.