Idaho · 2026 Tax Year
Idaho Income Tax Calculator
Idaho's top marginal state income tax rate is 5.80%. This calculator combines federal and state brackets to estimate your total liability.
Federal income tax
Idaho state tax
Total estimated tax
Net take-home
Effective rate: %
Idaho Income Tax in 2026
Idaho uses a progressive income tax with a top marginal rate of 5.80%. That rate kicks in at higher income levels; most filers fall into a lower effective bracket. Lower-income households often pay an effective state rate of 2–4%.
Combined with federal tax (10%–37%), Social Security (6.2% up to the wage base) and Medicare (1.45%), the all-in federal+state tax bite for Idaho residents at $100k gross typically lands in the 25%–32% effective range, depending on deductions.
Federal + State Tax at Common Income Levels (Idaho, single filer)
| Gross Income | Federal Tax | State Tax | Take-Home |
|---|---|---|---|
| $40,000 | $2,816 | $958 | $36,226 |
| $60,000 | $5,216 | $1,712 | $53,072 |
| $80,000 | $9,441 | $2,466 | $68,093 |
| $100,000 | $13,841 | $3,220 | $82,939 |
| $150,000 | $25,539 | $5,105 | $119,357 |
| $200,000 | $37,539 | $6,990 | $155,472 |
| $300,000 | $70,265 | $10,760 | $218,976 |
Estimates only — assumes standard deduction, no credits, no FICA. Consult a CPA for filing decisions.
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