Example: Combined Group AB consists of Member A and Member B. Group AB filed a combined return for calendar year 2010. The 2010 return includes $30,000 of net tax attributable to Member A's items and $20,000 attributable to Member B's items, including $5,000 attributable to B's separate entity items. The 2010 combined return also includes $10,000 of net tax from the separate entity items of Corporation C, which would be a combined group member except that none of its items are subject to combination under the water's edge rules. If Group AB is not eligible to base its estimated taxes on its 2009 net tax under the provisions of par. (b), Group AB's required estimated tax payments for purposes of its 2010 combined return are $54,000 (= ($30,000 + $20,000 + $10,000) x 90%).
Example: Group JK files a combined return for the calendar year 2009. During 2010, Member J acquires L and L becomes a member of the combined group. If the group qualifies to determine its estimated tax obligations for 2010 based on its preceding year's tax liability, its preceding year's tax liability only includes the tax shown on Group JK's 2009 combined return; it does not include any tax liability from L's 2009 separate return.
Note: If an allocation described in sub. (4) (a), (c) 2., or (d) is necessary and the department has not prescribed a form to use to notify the department of the allocation, send correspondence notifying the department of the allocation to: Corporation Processing Unit, Wisconsin Department of Revenue, P.O. Box 8908, Madison, WI 53708-8908.
Wis. Admin. Code Department of Revenue Tax 2.66
Section Tax 2.66 interprets ss. 71.255(7), 71.29, and 71.84(2), Stats.
See s. Tax 2.60 for definitions that relate to this section. See s. Tax 2.65 for more information on the duties of the designated agent. See s. Tax 2.67 for more information on combined returns.