Calculate your take-home pay in The Gem State. Idaho income tax rate: 5.3%.
Idaho simplified to a flat 5.3% income tax rate for 2025, down from 5.695% in 2024. The state conforms to the federal standard deduction. Idaho has no local income taxes.
| Item | Per Paycheck | Monthly | Annual |
|---|---|---|---|
| Gross Pay | - | - | - |
| Federal Income Tax | - | - | - |
| Idaho State Tax | $0 | $0 | $0 |
| Social Security | - | - | - |
| Medicare | - | - | - |
| 401(k) + Pre-Tax | - | - | - |
| Take-Home Pay | - | - | - |
Idaho has a flat income tax rate of 5.695%. This calculator estimates your take-home pay after federal income tax, state income tax, Social Security, Medicare, and any pre-tax deductions like 401(k) contributions. Enter your salary or hourly wage above to see a detailed breakdown of your paycheck.
Idaho moved to a flat tax system in 2023. All taxable income is taxed at 5.695%. The state starts with federal taxable income and makes limited adjustments. Idaho has a relatively low cost of living compared to its Pacific Northwest neighbors, which combined with moderate taxes provides reasonable purchasing power. The state does not impose local income taxes.
Regardless of state taxes, all Idaho workers pay federal income tax using the 2026 brackets: 10% on the first $11,925 of taxable income (single), 12% up to $48,475, 22% up to $103,350, 24% up to $197,300, 32% up to $250,525, 35% up to $626,350, and 37% on income above that. The standard deduction is $15,000 for single filers and $30,000 for married filing jointly in 2026.
All workers in Idaho pay Social Security tax at 6.2% on wages up to $176,100 (2026) and Medicare tax at 1.45% on all wages. An additional 0.9% Medicare surtax applies to wages over $200,000 for single filers. These federal payroll taxes apply uniformly regardless of which state you live in.
Pre-tax deductions reduce your taxable income for both federal and state purposes. Contributing to a 401(k) (up to $24,500 in 2026, plus $8,000 catch-up if 50+) lowers both your federal and ID state tax bill. Health Savings Account (HSA) contributions ($4,300 individual, $8,550 family in 2026) are also pre-tax. Review your W-4 withholding: if you receive a large refund each year, you may be overwithholding, which means less money in each paycheck. The Tax Bracket Calculator shows your federal marginal and effective rates.
Idaho's flat 5.695% income tax replaced a progressive system in 2023. Boise has grown rapidly as a destination for tech workers and remote employees leaving higher-cost metros. Cost of living is below the national average outside of Boise proper, though Boise itself has seen significant housing price increases.
Remote workers considering Idaho should compare take-home pay carefully with Washington (no income tax) and Oregon (no sales tax but higher income tax). At a $100,000 salary, the difference between Idaho and Washington is roughly $5,700 per year in state income tax alone.