What should my Idaho estimated tax payments be for 2025?

Estimate Idaho quarterly payments for 2025 or 2026 by entering expected Idaho taxable income and planned withholding. The tool applies Idaho income tax rates to estimate total tax and divides the remaining balance into quarterly payments.

No login required.

How this calculation works

  • Estimates total Idaho tax based on taxable income and filing status.
  • Subtracts planned withholding to find the remaining balance.
  • Splits the balance into four quarterly payment targets.

Common mistakes and caveats

  • Safe harbor rules and penalties are not fully modeled.
  • Seasonal income can change ideal payment timing.
  • Local taxes are not included.

FAQ

Do I still need estimated payments if I have withholding?

Possibly. The calculator nets out withholding before suggesting quarterly payments.

Last updated & sources

Last updated January 27, 2026.

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How much Idaho income tax will I owe for 2025?How much Idaho tax should be withheld from each paycheck?Do I meet IRS safe harbor to avoid underpayment penalties?

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

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