86 Ill. Adm. Code 1000.100.5260
Combined Amended Returns
Section 100
TITLE 86: REVENUE
CHAPTER I: DEPARTMENT OF REVENUE
PART 100 INCOME TAX
SECTION 100.5260 COMBINED AMENDED RETURNS
Section 100.5260 Combined
Amended Returns
a) In general. The election or requirement to be treated as a
single taxpayer applies to any amended return which includes the same taxpayers
of the unitary business group which joined in the filing of the original
return.
b) No election. If an election is not in effect for a taxable
year ending prior to December 31, 1993, a combined amended return shall not be
filed for that year.
c) If an election is in effect for a taxable year and it is
subsequently revoked for that year because the group is not a unitary business,
the designated agent may not file a combined amended return. Similarly, if a
group files what it believes to be a required combined return, and it is later
determined that the group is not engaged in a unitary business, the designated
agent shall not file a combined amended return. Instead, in either instance,
the designated agent and each corporation which joined in the filing of the
combined return shall file a separate amended return. In computing the tax
due on any such amended return, the filer shall take into account all payments,
credits and other amounts (including refunds) allocated to it by the designated
agent pursuant to Section 100.5230(g) or Section 100.5250(d)(2) of this Part.
d) Ineligible member. If a change in liability relates to the
removal of a member that was not eligible to make the election, or of a
taxpayer which could not be required to be a part of the group (e.g., a
corporation which was not engaged in a unitary business with the combined group
members, a partnership, or a Subchapter S Corporation), the designated agent
shall file a combined amended return and the ineligible taxpayer shall file a
separate amended return.
e) If a corporation erroneously fails to join in the filing of a
combined return, the designated agent shall file an amended combined return
adding such corporation and, if a separate return was filed by such
corporation, such corporation shall file an amended separate return showing no
net income, overpayment or underpayment, and stating that such corporation has
joined in the filing of a combined return.