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.
The Wisconsin Income Tax. Wisconsin collects a state income tax at a maximum marginal tax rate of %, spread across tax brackets. Like the Federal Income Tax, Wisconsin's income tax allows couples filing jointly to pay a lower overall rate on their combined income with wider tax brackets for joint filers. Wisconsin's maximum marginal income tax rate is the 1st highest in the United States, ranking directly below Wisconsin's %.