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How to Calculate 2015 Wisconsin 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 2015 Wisconsin 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 computer icon in house payroll tax solution for Wisconsin small businesses here.
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  Wisconsin STATE TAX TABLES

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2026 Wisconsin State Tax Witholding Table
2025 Wisconsin State Tax Witholding Table
2024 Wisconsin State Tax Witholding Table
2023 Wisconsin State Tax Witholding Table
2022 Wisconsin State Tax Witholding Table
( 2021    2020    2019    2018    2017    )

Tax rate used in calculating Wisconsin state tax for year 2015

State Abbreviation:

WI

State Tax Withholding State Code:

55

Acceptable Exemption Form:

WT-4

Basis For Withholding:

State Exemptions

Acceptable Exemption Data:

S, M / Number of Exemptions

TSP Deferred:

Yes

Special Coding:

Determine the Total Number Of Allowances field as follows:
First Position - Enter the employee's marital status indicated on the WT-4. S=Single and M=Married.
Second and Third Positions - Enter the total number of exemptions claimed. If the number is less than 10, precede with a zero.

Additional Information:

None


Withholding Formula (Wisconsin Effective 2015)
  1. Subtract the biweekly Thrift Savings Plan contribution from the gross biweekly wages.

  2. Multiply the adjusted gross biweekly wages times 26 to obtain the annual wages.

  3. Apply the taxable income determined in step 2 to the following table to determine the Wisconsin tax withholding.



    4. Tax Withholding Table
    Single

    If the Amount of
    Taxable Income Is:

    The Amount of Wisconsin
    Tax Withholding Should Be:


    Over:

    But Not
    Over:

    Of Excess
    Over:

    $        0
    $   4,000
    $    0
     
    0%
    $         0
        4,000
         10,620
    $    0
    plus
    4.6%
        4,000
        10,620
         13,602
        304.52
    plus
    5.152%
        10,620
        13,602
       22,486
      458.15
    plus
    6.888%
        13,602
      22,486
       43,953
      1070.08
    plus
    7.280%
      22,486
      43,953
       149,330
      2,632.88
    plus
    6.50%
      43,953
      149,330
       219,200
      9,482.39
    plus
    6.75%
      149,330

      219,200

    		  and over 14,198.62 plus 7.75%   219,200


    Married


    If the Amount of
    Taxable Income Is:


    The Amount of     Wisconsin
    Tax Withholding Should Be:


    Over:

    But Not
    Over:

    Of Excess
    Over:

    $        0
    $  5,500
    $      0
    plus
    0.0%
    $       0
        5,500
        14,950
           0
    plus
    4.60%
       5,500
        14,950
      15,375
         434.70
    plus
    5.52%
       14,950
      15,375
      23,667
         458.16
    plus
    7.38%
     15,375
      23,667
      42,450
      1070.11
    plus
    7.80%
     23,667
      42,450
      149,300
      2,535.18
    plus
    6.50%
     42,450
      149,300
      219,200
      9,482.38
    plus
    6.75%
     149,300
      219,200
    and over
      14,198.61
    plus
    7.75%
     219,200
     
  4. Multiply the number of withholding exemptions claimed by $22 and subtract the amount from the tax determined in step 3.

  5. Divide the annual Wisconsin tax withholding by 26 to obtain the biweekly Wisconsin tax withholding.