Form 1040 U.S. Individual Income Tax Return - due no later than April 15.  If April 15th falls on a Saturday or Sunday it is due the following Monday.  2007 returns will be due on April 15, 2008.

Form 1065 U.S. Partnership Return of Income - a domestic partner ship must file Form 1065 by the 15th day of the 4th month following the date its tax year ended as shown at the top of Form 1065

Form 1120 U.S. Corporation Income Tax Return - a corporation must file its income taxreturn by the 15th of the 3rd month after its tax year end.  A new corporation filing a short-period return must generally file by the 15th of the 3rd month after tax short period ends.

Form 1120S U.S. Income Tax Return for an S Corporation - an S corporation must file Form 1120s by the 15th day of the third month after the end of its tax year.  For calendar year corporations, the due date is March 15th.

Form 1041 U.S. Income Tax Return for Estates and Trusts - for calendar year estates and trusts, file From 1041 and Schedule K-1 on or before April 15.  If April 15th falls on a Saturday or Sunday itis due the following Monday.  For fiscal year estates and trusts, file form 1041 by the 4th month following the close of the tax year.

Form 706 U.S. Estate Tax Return - Report estate and/or generation-skipping transfer tax

within 9 months after the date of the decedent's death unless you receive an extension of time to file.

Form 709 U.S. Estate Tax Return - You must file the 2006 Form 709 no earlier than January 1, 2007, but not later than April 16, 2007.  Other filing requirements are in place if the donor died during the year.

Wisconsin State Forms follow the reporting requirements of the Internal Revenue Service