Idaho Income Tax Calculator
Find your exact take-home pay in Idaho after federal tax, state income tax (5.8% flat rate), Social Security, and Medicare. Enter your salary and see your monthly and per-paycheck amounts instantly.
How to use this calculator
- 1Idaho is pre-selected as your state — the correct state income tax rate (5.8% flat rate) is applied automatically.
- 2Enter your annual gross salary and select your filing status — federal tax is calculated using the full 2026 IRS bracket method.
- 3Adjust health insurance and 401(k) contribution to match your actual elections — both reduce your taxable income and affect your real take-home.
- 4Your annual, monthly, and biweekly take-home pay — with a full breakdown and chart — appears instantly.
How we calculate Idaho take-home pay
Idaho's flat 5.8% income tax is offset by a cost of living that remains lower than coastal states, though the Boise area has become notably more expensive. Workers relocating from California often find that the tax savings and lower cost of living more than compensate for any salary adjustment. Idaho — particularly Boise — has become a major relocation destination for Californians and Pacific Northwest workers seeking lower costs and outdoor access. The state's population growth has put pressure on housing prices, but income taxes and overall costs remain lower than most origin states.
Deductions Applied for Idaho Residents
What this calculator doesn’t include
This calculator covers W2 employment income only. It does not account for: Many Idaho cities and counties levy local income taxes on top of the state rate — check whether your city has one. It also excludes the Alternative Minimum Tax (AMT), the additional Medicare surtax (0.9% on wages above $200,000), investment or capital gains income, self-employment income, itemized deductions (the standard deduction is applied), or employer-provided benefits such as 401(k) matching and health insurance contributions. Results are estimates for financial planning purposes — consult a qualified tax professional for advice specific to your situation.
Idaho take-home pay by salary (2026)
Estimates for a single filer using the 2026 standard deduction, no pre-tax deductions. Click any row to jump to the calculator.
| Annual Salary | Federal Tax | Idaho Tax | FICA | Take-Home Pay |
|---|---|---|---|---|
| $40,000 | $2,762 6.9% | $2,320 5.8% | $3,060 7.6% | $31,858 79.6% |
| $45,000 | $3,362 7.5% | $2,610 5.8% | $3,442 7.6% | $35,586 79.1% |
| $50,000 | $3,962 7.9% | $2,900 5.8% | $3,825 7.6% | $39,314 78.6% |
| $60,000 | $5,162 8.6% | $3,480 5.8% | $4,590 7.6% | $46,768 77.9% |
| $75,000 | $8,114 10.8% | $4,350 5.8% | $5,738 7.6% | $56,798 75.7% |
| $100,000 | $13,614 13.6% | $5,800 5.8% | $7,650 7.6% | $72,936 72.9% |
| $125,000 | $19,247 15.4% | $7,250 5.8% | $9,562 7.6% | $88,940 71.2% |
| $150,000 | $25,247 16.8% | $8,700 5.8% | $11,475 7.6% | $104,578 69.7% |
| $200,000 | $37,247 18.6% | $11,600 5.8% | $14,339 7.2% | $136,814 68.4% |
* Percentages show each item as a share of gross salary. Take-Home % = effective keep rate after all taxes.