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Idaho Income Tax Calculator 2026

Estimate your Idaho federal and state income tax for 2025.

Your inputs

$

Your liability

Total tax
$14,624
After tax: $70,376
Federal tax
$10,541
Taxable: $70,400
State tax
$4,083
Taxable: $70,400
Effective rate
17.2%
Federal marginal
22.0%
Federal bracket breakdown
10.00%on $11,600$1,160
12.00%on $35,550$4,266
22.00%on $23,250$5,115

About Idaho income tax

Tax structure

Idaho uses a flat tax rate of 5.80% on taxable income.

Snapshot at $75,000 (single)

  • Take-home: $57,418 per year
  • Federal tax: $8,341
  • State tax: $3,503
  • Effective rate: 23.44%
  • vs. Texas (no income tax): Idaho keeps $3,503 more.

Compare to neighboring states

Washington →Oregon →Nevada →Utah →All states

Idaho tax FAQ

How much state income tax will I pay in Idaho?

Idaho state income tax depends on your taxable income and filing status. Use the calculator above for an exact estimate.

What's the difference between federal and Idaho state tax?

Federal income tax is collected by the IRS using nationwide brackets (10%–37%). Idaho state income tax (where applicable) is separate and uses its own brackets and deductions. Both apply to most Idaho residents.

Are these the 2025 or 2026 tax brackets?

The calculator uses tax year 2025 federal brackets — the figures you'll use to file in early 2026. The IRS adjusts brackets annually for inflation; we update when 2026 figures are released.

Should I take the standard deduction or itemize?

Take whichever is larger. The 2025 standard deduction is $14,600 (single), $29,200 (married filing jointly), or $21,900 (head of household). Itemize if your mortgage interest, state and local taxes (capped at $10,000), and charitable donations exceed that amount.