Idaho charges 5.3% flat state income tax. Use the tax refund estimator pre-loaded with Idaho rates.
Open Tax Refund Estimator →In Idaho, you may receive refunds at both the federal and state level. Your state refund depends on how your employer's flat 5.3% withholding compared to your actual Idaho tax liability. Common reasons for a state refund include credits, deductions, or withholding calibrated for a higher income than you actually earned. Use this estimator to project both your federal and Idaho state refund amounts.
Idaho levies a flat 5.3% state income tax on all taxable income regardless of how much you earn. This makes tax planning straightforward: for every additional dollar you earn, 5.3 cents goes to Idaho. Idaho does not impose local income taxes, so the 5.3% flat rate is the only state-level income tax you owe.
The table below shows what you actually keep at five salary levels in Idaho, accounting for federal tax, FICA, and Idaho's flat 5.3% state tax.
See how Idaho compares to other West states. Each link takes you to the tax refund estimator landing page for that state.
For a comprehensive breakdown of Idaho’s tax structure, salary comparisons, cost-of-living analysis, and more, visit the full Idaho take-home pay page.