Idaho Income Tax Calculator

Overview of Idaho Taxes

In 2023, Idaho transitioned to a flat income tax system, imposing a rate of 5.8% on taxable income over $2,500 for individuals, trusts, and estates, shifting from its previous graduated-rate tax system. This change simplifies tax calculations, mirroring a broader trend of tax simplification.

To use the Idaho income tax calculator, simply input your desired salary and filing status to begin.

USA income tax calculator for Idaho

2023/24 Idaho Income Tax Calculator

Idaho Income Tax Calculator 2023
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The TaxAssist+ calculator computes your federal and state income taxes for the 2023/24 tax year, using several key factors such as your household income, geographical location, and filing status.


  • Initially, the calculator identifies your adjusted gross income (AGI) by reducing your total household income by specific, allowable adjustments.
  • We then subtract potential personal exemptions to arrive at your taxable income.
  • Your taxable income is subjected to relevant tax brackets based on your filing status to determine the total income tax you owe for the year.

Update Schedule: TaxAssist+ continuously monitors for amendments to tax rates and regulations, ensuring that our calculators remains current for the current tax year.

Customer Support: For any comments or inquiries, we encourage you to reach out directly to our support team via our contact page.

Step 1

Our US research professionals meticulously compile and scrutinize the latest tax laws and regulations to ensure foundational accuracy.
James Toth
Financial Services Research Expert

Step 2

A dedicated team of independent fact-checkers rigorously reviews and authenticates the compiled data for integrity and compliance.
By independent fact-checkers

Step 3

Our tech team then integrates these verified updates into the TaxAssist+ calculators, ensuring they reflect the most current tax rates.
Liam Hollis
Product & IT Lead at TNGB Research

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