Idaho Income Tax Calculator 2026 — Federal + State Combined
Flat 5.8% rate. Boise is one of the fastest-growing metros. Lower cost of living.
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Federal + Idaho Combined Tax — 2026
Includes federal income tax, Idaho state tax, and FICA (Social Security 6.2% + Medicare 1.45%).
| Gross Income | Federal Tax | ID State Tax | FICA | Take-Home | Eff. Rate |
|---|---|---|---|---|---|
| $50,000 | $3,820 | $2,053 | $3,825 | $40,302 | 19.4% |
| $75,000 | $7,670 | $3,503 | $5,738 | $58,089 | 22.5% |
| $100,000 | $13,170 | $4,953 | $7,650 | $74,227 | 25.8% |
| $150,000 | $24,734 | $7,853 | $11,475 | $105,938 | 29.4% |
Idaho State Income Tax Brackets (2026)
Idaho uses a flat tax rate applied to all taxable income after a $14,600 standard deduction.
Other Taxes in Idaho (2026)
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Frequently Asked Questions
What is the Idaho income tax rate for 2026?
Idaho has a flat 5.8% state income tax in 2026, applied after a $14,600 standard deduction. At $75,000 gross income, state tax is approximately $3,503.
What is total (federal + state) take-home on $100,000 in Idaho?
On $100,000 in Idaho (2026): Federal income tax ≈ $13,170, Idaho state tax ≈ $4,953, FICA (SS + Medicare) ≈ $7,650. Total taxes: $25,773. Take-home: $74,227 (25.8% combined effective rate).
Does Idaho have sales tax?
Idaho's state sales tax rate is 6%. Local jurisdictions (cities and counties) may add additional taxes, so the combined rate you pay may be higher.
How does Idaho compare globally?
See how your take-home pay in Idaho compares to other countries like the UK, Germany, Canada, Singapore, and Australia.
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