What are Idaho's income tax rates for 2026?
Idaho taxes wages at 5.3% flat. On $75,000 a single filer pays about $3,180 in Idaho income tax (4.2% effective).
Idaho income tax brackets (single filer)
| Taxable income | Rate | Note |
|---|---|---|
| Over $0 | 5.3% | Single filer, taxable income |
Context
Idaho moved to a flat 5.3% for 2025 on federal taxable income (the first ~$4,800 is taxed at 0%, ignored here). Standard deduction / exemptions used here: $15,000 single, $30,000 joint. Married couples generally use doubled thresholds. City and county income taxes, where they exist, come on top.
What moves this number
Filing status and W-4 settings
Married filing jointly roughly doubles bracket widths and the standard deduction, so the same salary withholds very differently by status. Dependents, second jobs, and extra-withholding entries on the W-4 move every paycheck.
State and local taxes
Nine states levy no wage income tax while top marginal rates elsewhere exceed 10%, and cities like New York add their own layer. The same salary can differ by hundreds of dollars per month purely on location.
Pre-tax benefits
Traditional 401(k), HSA, and health premiums come out before income tax, shrinking both taxable income and the withholding on each check — a raise in contributions costs less take-home than the headline amount.
Methodology
Brackets from the state revenue department's 2025–2026 published schedules; effective rate computed with no pre-tax deductions or credits.
Assumptions and caveats
- Figures use current-year federal brackets and standard deductions; your actual withholding depends on your W-4 and state.
- Estimates exclude credits (Child Tax Credit, EITC), which can materially change the final number.
- This is educational arithmetic, not tax advice — confirm decisions with a tax professional.
- This page was last reviewed on 2026-10-02. Ranges are updated as new data lands, so re-check before using them in a contract or a plan.
- Use these numbers as a starting range, not a guarantee — your own historical data always beats a benchmark.
Frequently asked questions
What are Idaho's income tax rates for 2026?
Idaho taxes wages at 5.3% flat. On $75,000 a single filer pays about $3,180 in Idaho income tax (4.2% effective).
Where do these numbers come from?
Brackets from the state revenue department's 2025–2026 published schedules; effective rate computed with no pre-tax deductions or credits.
How can I estimate my own number instead of using a benchmark?
Use the $75k after taxes in Idaho on RevenueLab — it takes your own inputs and returns a figure specific to your setup, which is always more accurate than a published range.
Model your own numbers
Related reading
More answers in this category
- How do you calculate take-home pay?
- How do you calculate net pay from gross pay?
- What percentage of a paycheck goes to taxes?
- How do you calculate FICA taxes on a paycheck?
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Last updated 2026-10-02.