Idaho Tax Brackets 2025
Idaho state income tax rates for tax year 2025 — a flat 5.3% on all taxable income.
Tax year
2025
Type
Flat
Rate range
Flat 5.3%
Brackets
1
Idaho state tax at common incomes (2025)
| Taxable income | Single — tax | Single — effective | MFJ — tax | MFJ — effective |
|---|---|---|---|---|
| $50,000 | $2,650 | 5.30% | $2,650 | 5.30% |
| $75,000 | $3,975 | 5.30% | $3,975 | 5.30% |
| $100,000 | $5,300 | 5.30% | $5,300 | 5.30% |
| $150,000 | $7,950 | 5.30% | $7,950 | 5.30% |
| $250,000 | $13,250 | 5.30% | $13,250 | 5.30% |
| $500,000 | $26,500 | 5.30% | $26,500 | 5.30% |
State income tax only. Excludes federal tax, FICA, and local/city taxes. Assumes taxable income (after deductions).
How Idaho tax is calculated on $75,000 (2025, single filer)
$75,000 × 5.3% = $3,975.
Assumes $75,000 of state taxable income (after deductions and exemptions). State income tax only — federal tax, FICA, and any local/city tax are separate.
About Idaho's 2025 rates
Idaho's flat tax rate means all taxable income is taxed at the same 5.3% rate regardless of income level. Idaho conforms closely to the federal tax code for determining taxable income, with some modifications. The state does not tax Social Security benefits.
State tax sits on top of federal — see the current federal tax brackets and standard deductions to estimate your full 2025 liability.
Compare every state at the state tax brackets hub, or run a full estimate in the state income tax calculator.
View 2026 Idaho tax brackets for the latest rates.
Frequently asked questions
What are the Idaho tax brackets for 2025?
Idaho has a flat state income tax of 5.3% for tax year 2025 — applied to all taxable income regardless of filing status.
What is the top Idaho income tax rate in 2025?
5.3%.
How much Idaho state tax on $100,000 in 2025?
A single filer with $100,000 of taxable income owes $5,300 in Idaho state income tax for 2025 — an effective rate of 5.30%. Married filing jointly with the same income owes $5,300 (5.30% effective). Federal tax is separate.
Are Idaho 2025 tax brackets the same as 2024?
Bracket thresholds may have changed for 2025 via inflation indexing or legislative action. The figures on this page are the Idaho bracket thresholds in effect for tax year 2025.
Explore more Idaho tax info
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