Idaho Income Tax Calculator

Estimate your Idaho income tax burden

Updated for 2024 tax year on Dec 19, 2024

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How to calculate your Idaho income taxes

Understanding your Idaho income taxes

Idaho’s state income tax system is progressive with seven tax brackets ranging from 1% to 6%.

While there’s no specific state payroll tax, employers in Idaho are required to contribute to the state’s unemployment insurance fund.

The state provides a standard deduction of $12,550 for single taxpayers and $25,100 for joint filers in 2023. There are no personal and dependent exemptions.

Calculate your income tax in Idaho

1. Work out your total federal income tax
   1. Gross income adjusted
      Gross income − Pre-tax deductions = Gross income adjusted
   2. Federal taxable income
      Gross income adjusted − Federal standard/itemized deductions = Federal taxable income
   3. Federal income tax liability
      Federal taxable income × Federal income tax rate = Federal income tax liability
   4. Federal payroll tax liability
      Gross income × Federal payroll tax rate = Federal payroll tax liability
2. Calculate your total Idaho state income tax
   1. Idaho state taxable income
      Gross income adjusted − Idaho state standard/itemized deductions = Idaho state taxable income
   2. Idaho state income tax liability
      Idaho state taxable income × Idaho state income tax rate = Idaho state income tax liability
3. Add up all the taxes
   Federal income tax liability + Federal payroll tax liability + Idaho state income tax liability = Your total income tax liability

State income tax brackets

Each filer type has different progressive tax rates. Refer to Tax Foundation for more details.

State standard deduction

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