1. Single, Head of Household, or Fiduciaries
    1. Wisconsin taxable income under $100,000:
      1. Determine midpoint of $100 brackets with the following exceptions:
        • $0 - $20 of taxable income in first bracket has a tax of –0–.
        • $20 - $40 of taxable income in second bracket has a tax of $1.
        • $40 - $100 of taxable income in third bracket has a tax of $3.
      2. Apply the following rates to that midpoint: (Note: Only the final amount should be rounded to the nearest dollar. Round .500 or more up and less than .500 down.)

        Taxable Income

        At
        Least
        But
        Less Than
        Tax Computation
        $ 0$   11,2304.00% of excess over $0
        $  11,230$   22,470$449.20 plus 5.84% of excess over $11,230
        $  22,470$ 100,000$1,105.616 plus 6.27% of excess over $22,470
    2. Wisconsin taxable income of $100,000 or over, apply the following rates:

      Taxable Income

      At
      Least
      But
      Less Than
      Tax Computation
      $ 100,000$ 247,350$5,966.747 plus 6.27% of excess over $100,000
      $ 247,350 or over$15,205.592 plus 7.65% of excess over $247,350
  2. Married Filing Jointly
    1. Wisconsin taxable income under $100,000:
      1. Determine midpoint of $100 brackets with the following exceptions:
        • $0 - $20 of taxable income in first bracket has a tax of –0–.
        • $20 - $40 of taxable income in second bracket has a tax of $1.
        • $40 - $100 of taxable income in third bracket has a tax of $3.
      2. Apply the following rates to that midpoint: (Note: Only the final amount should be rounded to the nearest dollar. Round .500 or more up and less than .500 down.)

        Taxable Income

        At
        Least
        But
        Less Than
        Tax Computation
        $ 0$   14,9804.00% of excess over $0
        $ 14,980$   29,960$599.20 plus 5.84% of excess over $14,980
        $ 29,960$ 100,000$1,474.032 plus 6.27% of excess over $29,960
    2. Wisconsin taxable income of $100,000 or over, apply the following rates:

      Taxable Income

      At
      Least
      But
      Less Than
      Tax Computation
      $ 100,000$ 329,810$5,865.54 plus 6.27% of excess over $100,000
      $ 329,810 or over $20,274.627 plus 7.65% of excess over $329,810
  3. Married Filing Separately
    1. Wisconsin taxable income under $100,000:
      1. Determine midpoint of $100 brackets with the following exceptions:
        • $0 - $20 of taxable income in first bracket has a tax of –0–.
        • $20 - $40 of taxable income in second bracket has a tax of $1.
        • $40 - $100 of taxable income in third bracket has a tax of $3.
      2. Apply the following rates to that midpoint: (Note: Only the final amount should be rounded to the nearest dollar. Round .500 or more up and less than .500 down.)

        Taxable Income

        At
        Least
        But
        Less Than
        Tax Computation
        $ 0$    7,4904.00% of excess over $0
        $   7,490$   14,980$299.60 plus 5.84% of excess over $7,490
        $ 14,980$ 100,000$737.016 plus 6.27% of excess over $14,980
    2. Wisconsin taxable income of $100,000 or over, apply the following rates:

      Taxable Income

      At
      Least
      But
      Less Than
      Tax Computation
      $ 100,000 $ 164,900$6,067.77 plus 6.27% of excess over $100,000
      $ 164,900 or over$10,137.00 plus 7.65% of excess over $164,900

Calculation of Wisconsin Standard Deduction Tables
For Tax Year 2017

  1. Single
    1. Wisconsin income under $118,718:
      1. Determine midpoint of $500 brackets with the following exceptions:
        • $0 - $10,250 of Wisconsin income in first bracket has a standard deduction of $10,380.
        • $10,250 - $10,500 of Wisconsin income in second bracket has a standard deduction of $10,380.
        • $118,500 - $118,718 in last bracket has a standard deduction of $0.
      2. Determine the standard deduction for that midpoint as follows:

        Wisconsin Income

        At
        Least
        But
        Less Than
        Standard Deduction
        $ 0$ 14,960$10,380
        $ 14,960$101,460$10,380 less 12% of excess over $14,960
        $101,460 or over$0
    2. For Wisconsin income of $118,718 or over, the standard deduction is $0. (Note: The standard deduction table continues to $118,718 even though the standard deduction is $0 for single persons beginning with the $101,500 - $102,000 bracket.)
  2. Married Filing Jointly
    1. Wisconsin income under $118,718:
      1. Determine midpoint of $500 brackets with the following exceptions:
        • $0 - $10,250 of Wisconsin income in first bracket has a standard deduction of $19,210.
        • $10,250 - $10,500 of Wisconsin income in second bracket has a standard deduction of $19,210.
        • $118,500 - $118,718 in last bracket has a standard deduction of $22.
      2. Determine the standard deduction for that midpoint as follows:

        Wisconsin Income

        At
        Least
        But
        Less Than
        Standard Deduction
        $ 0$  21,590$19,210
        $  21,590$ 118,718$19,210 less 19.778% of excess over $21,590
        $ 118,718 or over$0
    2. For Wisconsin income of $118,718 or over, the standard deduction is $0.
  3. Married Filing Separately
    1. Wisconsin income under $118,718:
      1. Determine midpoint of $500 brackets with the following exceptions:
        • $0 - $10,250 of Wisconsin income in first bracket has a standard deduction of $9,130
        • $10,250 - $10,500 of Wisconsin income in second bracket has a standard deduction of $9,105.
        • $118,500 - $118,718 in last bracket has a standard deduction of $0.
      2. Determine the standard deduction for that midpoint as follows:

        Wisconsin Income

        At
        Least
        But
        Less Than
        Standard Deduction
        $ 0$  10,250$9,130
        $  10,250$ 56,412$9,130 less 19.778% of excess over $10,250
        $ 56,412 or over$0
    2. For Wisconsin income of $118,718 or over, the standard deduction is $0. (Note: The standard deduction table continues to $118,718 even though the standard deduction is $0 for married persons filing separately beginning with the $56,500 - $57,000 bracket.)
  4. Head of Household
    1. Wisconsin income under $118,718:
      1. Determine midpoint of $500 brackets with the following exceptions:
        • $0 - $10,250 of Wisconsin income in first bracket has a standard deduction of $13,400.
        • $10,250 - $10,500 of Wisconsin income in second bracket has a standard deduction of $13,400.
        • $118,500 - $118,718 in last bracket has a standard deduction of $0.
      2. Determine the standard deduction for that midpoint as follows:

        Wisconsin Income

        At
        Least
        But
        Less Than
        Standard Deduction
        $ 0$ 14,960$13,400
        $ 14,960$ 43,682$13,400 less 22.515% of excess over $14,960
        $ 43,682$101,460$10,380 less 12% of excess over $14,960
        $101,460 or over$0
    2. For Wisconsin income of $118,718 or over, the standard deduction is $0. (Note: The standard deduction table continues to $118,718 even though the standard deduction is $0 for head of household beginning with the $101,500 - $102,000 bracket.)

Calculation of Wisconsin School Property Tax Credit Tables
For Tax Year 2017

Note: These tables have not changed from the 2016 version.

  1. Homeowner's School Property Tax Credit Table
    1. Property tax paid of less than $2,500:
      1. Determine midpoint of $25 brackets ($1 - $25 of property tax paid in first bracket has a credit of $2).
      2. Multiply the midpoint by 0.12.
    2. For property tax paid of $2,500 or more, the credit is $300.
  2. Renter's School Property Tax Credit Table
    1. If heat included in rent:
      1. Determine midpoint of $100 brackets ($1 - $100 of rent paid in first bracket has a credit of $1).
      2. Multiply the midpoint by 0.024.
      3. For rent paid of $12,500 or more, the credit is $300.
    2. If heat not included in rent:
      1. Determine midpoint of $100 brackets ($1 - $100 of rent paid in first bracket has a credit of $2).
      2. Multiply the midpoint by 0.03.
      3. For rent paid of $10,000 or more, the credit is $300.

Calculation of Wisconsin Homestead Credit Tables A and B
For Tax Year 2017

Note: These tables have not changed from the 2016 version.

  1. Table A
    1. Determine midpoint of $115 brackets with the following exceptions:
      • $0 - $8,060 of household income in first bracket has a Table A amount of $0.
      • $24,620 - $24,680 of household income in second-to-last bracket has a Table A amount of $1,457.
      • $24,680 or more of household income in last bracket has a Table A amount of $1,460.
    2. Determine the Table A amount for that midpoint as follows:
      [Midpoint - $8,060] X .0878459
  2. Table B
    1. Determine the midpoint of $10 brackets with the following exceptions:
      • $0 - $.01 in first bracket has a Table B amount of $0.
      • $.01 - $10 in second bracket has a Table B amount of $10.
      • $1,460 or more in last bracket has a Table B amount of $1,168.
    2. Determine the Table B amount for that midpoint by multiplying the midpoint by 80% (.80).

October 31, 2017