Idaho Payroll Tax Calculator 2026
Calculate your exact Idaho take-home pay. State income tax: 5.8% flat. Includes federal taxes and FICA.
| Deduction | Per Paycheck | Annual |
|---|---|---|
| Gross Pay | — | — |
| Federal Income Tax | — | — |
| Idaho State Tax | — | — |
| Social Security (6.2%) | — | — |
| Medicare (1.45%) | — | — |
| Total Deductions | — | — |
| Net Take-Home | — | — |
Idaho Income Tax Rates 2026
Idaho uses a flat income tax rate of 5.8% on all taxable income above the state standard deduction ($14,600). Every dollar of taxable income is taxed at the same rate, regardless of how much you earn.
All Payroll Deductions in Idaho
- Federal income tax: 10%–37% (2026 brackets, based on taxable income after $15,000 standard deduction for single filers)
- Idaho state income tax: 5.8% flat
- Social Security: 6.2% on wages up to $176,100
- Medicare: 1.45% on all wages (+ 0.9% on wages over $200,000)
Idaho vs Federal Tax: What's Different
Your Idaho state tax is calculated on state taxable income (gross minus Idaho's standard deduction of $14,600). Federal tax uses a $15,000 standard deduction (single, 2026). The rates and brackets are independent — state tax is not a deduction from federal tax.
About This Calculator
This calculator uses 2026 federal and Idaho state tax rates. Results are estimates — actual withholding may differ based on W-4 elections, itemized deductions, tax credits, and local/county taxes not included here. Always verify with your payroll provider or a tax professional.