The rate
changed form 7.3% to 9.5% in 2011.
It is a temporary increase
is supposed to last until 2015.
The increase in corporate
tax rate has been blamed for the exodus of businesses from
Illinois to surrounding states such as Wisconsin and Indiana
where the rates are lower.
Wisconsin has a 7.9%
corporate tax rate and Indiana has a 8% corproate tax rate.
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