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.
You must file the correct form to amend your Wisconsin income tax return. Full-year residents of Wisconsin should use the Wisconsin Form 1X for the year being amended. Nonresidents and part-year residents should file a Form 1NPR for the year being amended and check the amended box at the top-left of the Form 1NPR.ou should pay the tax. You also owe interest at the rate of 12% per year from the original due date of the return being amended to the date of payment. You should also consider whether any underpayment interest is due.