Idaho Income Tax Brackets 2026
What are the Idaho income tax brackets for 2026?
Idaho has no bracket ladder in 2026: one flat rate of 5.3% applies to state taxable income (the first $4,811 of taxable income is taxed at 0%), after a standard deduction of $16,100 single ($32,200 married filing jointly) and any personal exemption. On a $75,000 salary, a single filer pays $2,867 of Idaho income tax.
Idaho keeps its 2026 income tax simple: a flat 5.3% rate on taxable income, with a standard deduction of $16,100 for single filers and $32,200 for married filing jointly.
Updated October 29, 2026
Idaho brackets for single filers, 2026
Rates apply to Idaho taxable income: gross pay minus the standard deduction and any personal exemption. In Idaho the schedule fills from the bottom up: the single rate of 5.3% applies across taxable income, after a 0% band on the first $4,811.
| Taxable income (single) | Rate |
|---|---|
| $0 to $4,811 | 0% |
| $4,812 and up | 5.3% |
Idaho brackets for married filing jointly, 2026
| Taxable income (joint) | Rate |
|---|---|
| $0 to $9,622 | 0% |
| $9,623 and up | 5.3% |
Standard deduction and exemption in Idaho
The 2026 standard deduction is $16,100 for single filers and $32,200 for married filing jointly. In Idaho, that means the first $16,100 of a single filer's pay is taxed at zero before the schedule even starts.
Worked example: the brackets on a $75,000 salary
A single filer earning $75,000 in Idaho first removes the standard deduction, leaving $58,900 of taxable income. Each bracket then takes its slice:
| Bracket range | Income in bracket | Rate | Tax |
|---|---|---|---|
| $0 to $4,811 | $4,811 | 0% | $0 |
| $4,812 and up | $54,089 | 5.3% | $2,867 |
Total Idaho income tax: $2,867, an effective rate of 3.82% of gross pay. The marginal rate, the rate on the next dollar Idaho taxes, is 5.3%; a raise that crosses into that bracket pays 5.3% only on the dollars above the line, never on the whole salary.
Idaho income tax on common salaries (single filer)
| Gross salary | Idaho income tax | Effective rate | Marginal rate |
|---|---|---|---|
| $40,000 | $1,012 | 2.53% | 5.3% |
| $50,000 | $1,542 | 3.08% | 5.3% |
| $75,000 | $2,867 | 3.82% | 5.3% |
| $100,000 | $4,192 | 4.19% | 5.3% |
| $150,000 | $6,842 | 4.56% | 5.3% |
How Idaho compares with other states
How Idaho compares: on a $75,000 salary, the $2,867 a single filer pays ranks 20th highest among the 42 states and districts that tax wages in 2026, just behind Montana at $2,877 and just ahead of Oklahoma at $2,830.
A flat rate makes the marginal math unusually clean: every extra $1,000 of taxable income in Idaho adds exactly $53 of tax, no matter which end of the pay scale it lands on. A single filer's Idaho tax bill passes $1,000 at a gross salary of about $39,779, once the standard deduction has done its work.
To turn these figures into an actual paycheck, use the Idaho income tax calculator for any salary, or the Idaho take-home pay calculator to see the same salary after federal tax and FICA as well. Per pay period, the paycheck calculator breaks the Idaho result down further, and the state tax brackets hub lines up all 50 states and DC side by side.
Frequently asked questions
What is the Idaho income tax rate in 2026?
Idaho charges a flat 0% on state taxable income in 2026. There are no graduated brackets: the same rate applies from the first taxable dollar to the last.
What is the standard deduction in Idaho for 2026?
The standard deduction is $16,100 for single filers and $32,200 for married filing jointly.
How much Idaho income tax is owed on $75,000?
A single filer earning $75,000 pays $2,867 of Idaho income tax for 2026 in this model, an effective rate of 3.82% of gross pay.
Does Idaho have local income taxes on top of the state rate?
Some states and cities add local income taxes. This page models the state tax only; check whether your city or county in Idaho levies its own wage tax.