Idaho Tax Calculators.
Tax year 2026 income tax rates, brackets, and sales tax for Idaho. Returns for tax year 2026 are generally filed in 2027; source links and last-verified dates are shown below.Tax year 2026 means income earned during calendar year 2026; those returns are generally filed in 2027. State and local sales tax rates can change during the year, so confirm current rules before filing or remitting tax.
Income Tax
Idaho has a flat income tax rate of 5.695% on all taxable income, effective 2023. This replaced a progressive system. Idaho conforms to the federal standard deduction.
| Taxable Income | Rate |
|---|---|
| All taxable income | 5.695% |
Sales Tax
Groceries are taxed at the full state rate. Prescription drugs are exempt.
Idaho's 5.695% flat rate is above the national average. Its taxation of groceries at the full rate is notable, though a grocery tax credit helps offset the impact.
What is Idaho's income tax rate?
Idaho has a flat income tax rate of 5.695% on all taxable income. This flat rate replaced a progressive system in 2023.
Does Idaho tax groceries?
Yes, Idaho taxes groceries at the full 6% state sales tax rate. However, the state provides an annual grocery tax credit of $120 per person to offset this.
How does Idaho compare to neighboring states?
Idaho's 5.695% rate is higher than Montana's top rate for most taxpayers but lower than Oregon's. Compared to Washington and Wyoming (no income tax), Idaho's tax burden is higher.