Calculation of Wisconsin Income Tax
Tables For Tax Year 2012

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:

Taxable Income

At Least	But Less Than	Tax Computation
$ 0	$   10,570	4.60% of excess over $0
$  10,570	$   21,130	$486.22 plus 6.15% of excess over $10,570
$  21,130	$ 100,000	$1,135.66 plus 6.50% of excess over $21,130

2. Wisconsin taxable income of $100,000 or over, apply the following rates:

Taxable Income

At Least	But Less Than	Tax Computation
$ 100,000	$ 158,500	$6,262.21 plus 6.50% of excess over $100,000
$ 158,500	$ 232,660	$10,064.71 plus 6.75% of excess over $158,500
$ 232,660 or over		$15,070.51 plus 7.75% of excess over $232,660

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:

Taxable Income

At Least	But Less Than	Tax Computation
$ 0	$   14,090	4.60% of excess over $0
$ 14,090	$   28,180	$648.14 plus 6.15% of excess over $14,090
$ 28,180	$ 100,000	$1,514.68 plus 6.50% of excess over $28,180

2. Wisconsin taxable income of $100,000 or over, apply the following rates:

Taxable Income

At Least	But Less Than	Tax Computation
$ 100,000	$ 211,330	$6,182.98 plus 6.50% of excess over $100,000
$ 211,330	$ 310,210	$13,419.43 plus 6.75% of excess over $211,330
$ 310,210 or over		$20,093.83 plus 7.75% of excess over $310,210

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:

Taxable Income

At Least	But Less Than	Tax Computation
$ 0	$    7,040	4.60% of excess over $0
$   7,040	$   14,090	$323.84 plus 6.15% of excess over $7,040
$ 14,090	$ 100,000	$757.42 plus 6.50% of excess over $14,090

2. Wisconsin taxable income of $100,000 or over, apply the following rates:

Taxable Income

At Least	But Less Than	Tax Computation
$ 100,000	$ 105,660	$6,341.57 plus 6.50% of excess over $100,000
$ 105,660	$ 155,110	$6,709.47 plus 6.75% of excess over $105,660
$ 155,110 or over		$10,047.34 plus 7.75% of excess over $155,110

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Calculation of Wisconsin Standard Deduction Tables
For Tax Year 2012

1. Single

1. Wisconsin income under $108,637:

1. Determine midpoint of $500 brackets with the following exceptions:
• $0 - $9,380 of Wisconsin income in first bracket has a standard deduction of $9,760.
• $9,380 - $9,500 of Wisconsin income in second bracket has a standard deduction of $9,760.
• $108,500- $108,637 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	$ 14,070	$9,760
$ 14,070	$ 95,403	$9,760 less 12% of excess over $14,070
$ 95,403 or over		$0

2. For Wisconsin income of $108,637 or over, the standard deduction is $0. (Note: The standard deduction table continues to $108,637 even though the standard deduction is $0 for single persons beginning with the $95,500 - $96,000 bracket.)

2. Married Filing Jointly

1. Wisconsin income under $108,637:

1. Determine midpoint of $500 brackets with the following exceptions:
• $0 - $9,380 of Wisconsin income in first bracket has a standard deduction of $17,580.
• $9,380 - $9,500 of Wisconsin income in second bracket has a standard deduction of $17,580.
• $108,500 - $108,637 in last bracket has a standard deduction of $13.

2. Determine the standard deduction for that midpoint as follows:

Wisconsin Income

At Least	But Less Than	Standard Deduction
$ 0	$  19,750	$17,580
$  19,750	$ 108,637	$17,580 less 19.778% of excess over $19,750
$ 108,637 or over		$0

2. For Wisconsin income of $108,637 or over, the standard deduction is $0.

3. Married Filing Separately

1. Wisconsin income under $108,637:

1. Determine midpoint of $500 brackets with the following exceptions:
• $0 - $9,380 of Wisconsin income in first bracket has a standard deduction of $8,350
• $9,380 - $9,500 of Wisconsin income in second bracket has a standard deduction of $8,338.
• $108,500 - $108,637 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	$   9,380	$8,350
$  9,380	$ 51,599	$8,350 less 19.778% of excess over $9,380
$ 51,599 or over		$0

2. For Wisconsin income of $108,637 or over, the standard deduction is $0. (Note: The standard deduction table continues to $108,637 even though the standard deduction is $0 for married persons filing separately beginning with the $51,500 - $52,000 bracket.)

4. Head of Household

1. Wisconsin income under $108,637:

1. Determine midpoint of $500 brackets with the following exceptions:
• $0 - $9,380 of Wisconsin income in first bracket has a standard deduction of $12,610.
• $9,380 - $9,500 of Wisconsin income in second bracket has a standard deduction of $12,610.
• $108,500 - $108,637 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	$ 14,070	$12,610
$ 14,070	$ 41,175	$12,610 less 22.515% of excess over $14,070
$ 41,175	$ 95,403	$9,760 less 12% of excess over $14,070
$ 95,403 or over		$0

2. For Wisconsin income of $108,637 or over, the standard deduction is $0. (Note: The standard deduction table continues to $108,637 even though the standard deduction is $0 for head of household beginning with the $95,500 - $96,000 bracket.)

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Calculation of Wisconsin School Property Tax Credit Tables
For Tax Year 2012

Note: These tables have not changed from the 2011 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.

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Calculation of Wisconsin Homestead Credit Tables A and B
For Tax Year 2012

Note: These tables have not changed from the 2011 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).

Last updated July 6, 2012