HalfpricesoftHalfpricesoft
SupportSearchCartSign In

    ↑↓ Navigate ↵ Select Esc CloseCtrlK or / Open
     

    How to Calculate 2020 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 2020 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 downloadezPaycheck 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 computer icon in house payroll tax solution for Idaho small businesses here.
    		payroll software
    ezPaycheck: Small Business Payroll Solution

    Idaho State Tax Tables




    In House Payroll Solution
    Calculate Federal & State Taxes!
    Print Paychecks, File W2, W3, 943 & 940.
    View Sample Checks
    Try ezPaycheck 30-day FREE demo.


     ezPaycheck: Pay Employees On Time
     How to Make Your Own Checks in House?


    2026 Idaho State Tax Witholding Table
    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  2020  2019  2018  2017  )

    Tax rate used in calculating Idaho state tax for year 2020

    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 2020)<
    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 = >$2,960< 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
      $ >12,200
      $    0.00
      plus
      0.0%
      $        0
         12,200
         13,741
            0.00
      plus
      1.125%
         >12,200
         13,741
         15,281
           17.00
      plus
      3.125%
          13,741
         15,281
         16,822
           65.00
      plus
      3.625%
          15,281
         16,822
         18,362
         121.00
      plus
      4.625%
          16,822
         18,362
         19,903
         192.00
      plus
      5.625%
          18,362
         19,903
        23,754
         279.00
      plus
      6.625%
          19,903
        23,754
        and over
         534.00
      plus
      6.925%
        23,754


      Married

      If the Amount of
      Taxable Income Is:

      The Amount of Idaho
      Tax Withholding Should Be:


      Over:

      But Not
      Over:

      Of Excess
      Over:

      $        0
      $  >24,400
      $      0.00
      plus
      0.0%
      $        0
          24,400
           27,482
              0.00
      plus
      1.125%
        >24,400
          27,482
         30,562
            35.00
      plus
      3.125%
          27,482
        30,562
         33,644
          131.00
      plus
      3.625%
        30,562
        33,644
         36,724
          243.00
      plus
      4.625%
        33,644
        36,724
         39,806
          385.00
      plus
      5.625%
        36,724
        39,806
         47,508
          558.00
      plus
      6.625%
        39,806
        47,508
         and over
          1068.00
      plus
      6.925%
        47,508

    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 Small Business

  • What is the cost of using ezPaycheck payroll software

  • Quick Start Guide for New Mac Payroll Software Customers

  • How to start payroll in mid-year

  • 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