LRB-3361/1
MES:kmg:jf
1997 - 1998 LEGISLATURE
June 10, 1997 - Introduced by Representatives Rutkowski, Plale, Ziegelbauer
and Krusick, cosponsored by Senator Adelman. Referred to Committee on
Income Tax Review.
AB412,1,3 1An Act to create 71.05 (22) (dp) and 71.06 (2e) of the statutes; relating to:
2indexing for inflation individual income tax brackets and the standard
3deduction.
Analysis by the Legislative Reference Bureau
Under current law, there are 3 income tax brackets for single individuals,
certain fiduciaries and heads of households. There are also 3 brackets for married
persons who file jointly and 3 brackets for married persons who file separately. The
brackets for single individuals, certain fiduciaries and heads of households are
taxable income from $0 to $7,500; from more than $7,500 to $15,000; and more than
$15,000. The brackets for married persons filing jointly are taxable income from $0
to $10,000; from more than $10,000 to $20,000; and more than $20,000. The brackets
for married persons filing separately are taxable income from $0 to $5,000; from more
than $5,000 to $10,000; and more than $10,000.
Also under current law, the standard income tax deduction has 4 different
categories, each of which has a different deduction amount based on income. The
maximum standard deduction amounts in each category phase out as income
increases. The categories, the maximum standard deduction amounts and the
maximum income amounts to which the standard deduction applies before the
phaseout begins are the following: single individuals, $5,200 on Wisconsin adjusted
gross income (WAGI) of less than $7,500; heads of households, $7,040 on WAGI of less
than $7,500; married couples filing jointly, $8,900 on WAGI of less than $10,000; and
married individuals filing separately, $4,230 on WAGI of less than $4,750.

Under this bill, beginning with taxable year 1997, the individual income tax
brackets and the standard deduction will be indexed for inflation.
This bill will be referred to the joint survey committee on tax exemptions for a
detailed analysis, which will be printed as an appendix to this bill.
For further information see the state fiscal estimate, which will be printed as
an appendix to this bill.
The people of the state of Wisconsin, represented in senate and assembly, do
enact as follows:
AB412, s. 1 1Section 1. 71.05 (22) (dp) of the statutes is created to read:
AB412,2,152 71.05 (22) (dp) Standard deduction indexing. For taxable years beginning
3after December 31, 1996, the dollar amounts of the standard deduction that is
4allowable under par. (dm) and all of the dollar amounts of Wisconsin adjusted gross
5income under par. (dm) shall be increased each year by a percentage equal to the
6percentage change between the U.S. consumer price index for all urban consumers,
7U.S. city average, for the month of August of the previous year and the U.S. consumer
8price index for all urban consumers, U.S. city average, for the month of August of the
9year before the previous year, as determined by the federal department of labor.
10Each amount that is revised under this paragraph shall be rounded to the nearest
11multiple of $10 if the revised amount is not a multiple of $10 or, if the revised amount
12is a multiple of $5, such an amount shall be increased to the next higher multiple of
13$10. The department of revenue shall annually adjust the changes in dollar amounts
14required under this paragraph and incorporate the changes into the income tax
15forms and instructions.
AB412, s. 2 16Section 2. 71.06 (2e) of the statutes is created to read:
AB412,3,1017 71.06 (2e) Bracket indexing. For taxable years beginning after December 31,
181996, the maximum dollar amount in each tax bracket, and the corresponding
19minimum dollar amount in the next bracket, under subs. (1) and (2) shall be

1increased each year by a percentage equal to the percentage change between the U.S.
2consumer price index for all urban consumers, U.S. city average, for the month of
3August of the previous year and the U.S. consumer price index for all urban
4consumers, U.S. city average, for the month of August of the year before the previous
5year, as determined by the federal department of labor. Each amount that is revised
6under this subsection shall be rounded to the nearest multiple of $10 if the revised
7amount is not a multiple of $10 or, if the revised amount is a multiple of $5, such an
8amount shall be increased to the next higher multiple of $10. The department of
9revenue shall annually adjust the changes in dollar amounts required under this
10subsection and incorporate the changes into the income tax forms and instructions.
AB412,3,1111 (End)
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