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How to Calculate 2024 Idaho State Income Tax by Using State Income Tax Table

1. Find your income exemptions

2. Find your pretax deductions, including 401K, flexible account contributions ...

3. Find your gross income

4. Check the 2024 Idaho state tax rate and the rules to calculate state income tax

5. Calculate your state income tax step by step

6. If you want to simplify payroll tax calculations, you can download ezPaycheck payroll software, which can calculate federal tax, state tax, Medicare tax, Social Security Tax and other taxes for you automatically. You can try it free for 30 days, with no obligation and no credt card needed.

Learn more about the in house payroll tax solution for Idaho small businesses here.
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ezPaycheck: Small Business Payroll Solution

Idaho State Tax Tables

Attention Tax Filers: Last Minute Tax Reporting Solution

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2025 Idaho State Tax Witholding Table
2024 Idaho State Tax Witholding Table
2023 Idaho State Tax Witholding Table
2022 Idaho State Tax Witholding Table
2021 Idaho State Tax Witholding Table
( 2020   2019   2018   2017   2016   )

Tax rate used in calculating Idaho state tax for year 2024

State Abbreviation:

ID

State Tax Withholding State Code:

16

Acceptable Exemption Form:

W-4

Basis For Withholding:

State or Federal Exemptions

Acceptable Exemption Data:

S, M / Number of Exemptions

TSP Deferred:

Yes

Special Coding:

None

Additional Information:

If a state income tax certificate has not been processed or if a valid state exemption code is not present, the Federal exemptions will be used in the computation of state tax.


Withholding Formula >(Idaho Effective 2024)<
  1. Subtract the nontaxable biweekly Thrift Savings Plan contribution from the gross biweekly wages.

  2. Subtract the nontaxable biweekly Federal Health Benefits Plan payment(s) (includes flexible spending account - health care and dependent care deductions) from the amount computed in step 1.

  3. Add the taxable biweekly fringe benefits (taxable life insurance, etc.) to the amount computed in step 2 to obtain the adjusted gross biweekly wages.
  4. Multiply the adjusted gross biweekly wages times 26 to obtain the annual wages.

  5. Determine the exemption allowance by applying the following guideline and subtract this amount from the annual wages to compute the taxable income.

    6. Exemption Allowance = >$3,600< x Number of Exemptions

  6. Apply the taxable income computed in step 5 to the following table to determine the annual Idaho tax withholding.

    7. Tax Withholding Table
    Single

    If the Amount of
    Taxable Income Is:

    The Amount of Idaho
    Tax Withholding Should Be:


    Over:

    But Not
    Over:

    Of Excess
    Over:

    $       0
    $ >14,600
    $    0.00
    plus
    0.0%
    $        0
       14,600
       and over
          0.00
    plus
    5.695%
       >14,600


    Married

    If the Amount of
    Taxable Income Is:

    The Amount of Idaho
    Tax Withholding Should Be:


    Over:

    But Not
    Over:

    Of Excess
    Over:

    $        0
    $  >29,200
    $      0.00
    plus
    0.0%
    $        0
        29,200
         and over
            0.00
    plus
    5.695%
      >29,200

  7. Divide the annual Idaho tax withholding by 26 and round to the nearest dollar to obtain the biweekly Idaho tax withholding.
 

More Payroll Information for Idaho Small Business

  • What is the cost of using ezPaycheck payroll software

  • Quick Start Guide for New Payroll Software Customers

  • How to start payroll in mid-year

  • How to handle tips in restaurants

  • How to handle the local taxes

  • How to print paycheck on blank stock

  • How to add a customized deduction and withhold it automatically

  • How to set up payroll tax options for church and non-profits

  • How to handle paychecks for both employees and contractors

  • How to file tax forms

  • How to enter the paychecks for after the fact payroll