How much Idaho income tax will I owe for 2025?

Estimate Idaho income tax for 2025 or 2026 by entering Idaho taxable income, filing status, and residency allocation. The calculator applies Idaho income tax rates to estimate tax due and effective rate so you can plan payments or withholding.

No login required.

How this calculation works

  • Uses Idaho taxable income and filing status to estimate state tax.
  • Applies Idaho rates for the selected year.
  • Calculates estimated tax due and effective rate.

Common mistakes and caveats

  • Part-year and nonresident filers should prorate Idaho-source income.
  • Credits and special deductions can change the final result.
  • Local taxes are not included.

FAQ

Should I enter Idaho taxable income or total income?

Use Idaho taxable income from your return. If you only know total income, estimate deductions first.

Last updated & sources

Last updated January 27, 2026.

Related tools

What should my Idaho estimated tax payments be for 2025?How much Idaho tax should be withheld from each paycheck?What Idaho standard deduction and credits apply to me?

TaxGuide Pro provides free state and federal tax calculators for individuals, freelancers, and small businesses.

Related tools

Property tax deduction estimator (federal) (ID)SALT deduction optimizer (federal impact) (ID)State capital gains tax estimator (ID)State estimated tax (quarterly) calculator (ID)State paycheck withholding calculator (ID)State refund timeline estimator (ID)