Idaho Paycheck Calculator (2026)

How Idaho taxes income

Idaho applies a single flat rate of 5.95% to taxable income, so your marginal and effective state rates are the same number no matter what you earn. On $60,000 that is $3,570; on $120,000, exactly double.

What actually reaches your account

Approximate outcomes across the range: $50,000 gross leaves roughly $38,200 after federal, FICA and $2,975 of Idaho tax; $80,000 gross leaves roughly $58,720 after federal, FICA and $4,760 of Idaho tax; $120,000 gross leaves roughly $84,480 after federal, FICA and $7,140 of Idaho tax. Assumes standard deduction and no pre-tax benefits; every dollar into a traditional 401(k) or HSA comes off both the federal and the Idaho calculation.

Cost of living matters as much as the tax rate. Idaho runs about 7% below the national average, so $80,000 here has the purchasing power of roughly $86,022 at national-average prices. A lower-tax state with higher housing costs can leave you worse off in real terms.