During the administration of President George W. Bush, there was a controversy over the President's use of signing statements, which critics charged was unusually extensive and modified the meaning of statutes.
Wisconsin Filing Due Date: Corporation tax returns are due by March 15 â or by the 15 th day of the 3 rd month following the end of the taxable year (for fiscal year filers). Extended Deadline with Wisconsin Tax Extension: If you have an approved Federal tax extension (IRS Form 7004), your Wisconsin filing deadline will be automatically extended to 30 days past the Federal extension deadline.
Wisconsin reduced both its tax rates and the number of income tax brackets beginning with the 2013 tax year. The income that falls into these brackets is shown below. For single taxpayers, the rates are: 1  4% on the first $11,090 of taxable income.  5.84% on taxable income between $11,091 and $22,190.