86 Ill. Adm. Code 1000.100.5210
Procedures for Elective and Mandatory Filing of Combined Returns
Section 100
TITLE 86: REVENUE
CHAPTER I: DEPARTMENT OF REVENUE
PART 100 INCOME TAX
SECTION 100.5210 PROCEDURES FOR ELECTIVE AND MANDATORY FILING OF COMBINED RETURNS
Section 100.5210 Procedures
for Elective and Mandatory Filing of Combined Returns
a) Conditions of the election and election procedures. This
subsection (a) applies to taxable years ending on or after December 31, 1985
and prior to December 31, 1993.
1) Conditions
A) The election, if made, must include all eligible members of the
unitary business group, not just some.
B) For taxable years ending on or after December 31, 1987,
taxpayers are not required to have the same taxable year.
C) For taxable years ending on or after December 31, 1985 and
before December 31, 1987, taxpayers were required to have the same taxable year
to be eligible for the election. Corporate members with taxable years which
were different from the common taxable year were required to file their own
separate unitary returns or, in the case of two or more corporate members which
have the same taxable year that is different from other corporate members
making the election, they were allowed to elect to file their own combined
return.
2) Consent. The election to file a combined return shall be upon
the condition that all eligible members shall consent to this Subpart
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, and shall consent to be represented by the
designated agent appointed on the Schedule UB in all matters described in
Section 100.5220 of this Part. The filing of a combined return that includes
the income and factors of any eligible member shall be the consent as to that
member. If an eligible member fails to have its income and factors included in
the combined return, then the tax liability of that member shall be determined
on the basis of a separate unitary return unless the failure of such member was
due to a mistake of law or fact, or to inadvertence (as determined by the
designated agent) in which case the failure must be corrected prior to the
issuance of any Notice of Deficiency. Where such failure is corrected, such
member shall be treated as if it had properly consented and been included in
the election from the beginning.
3) Making the election. The election is to be made by properly
completing and filing a combined return (using Form IL-1120 and Schedule UB) by
its due date (including extensions). In the case of a first combined return
year, a combined request for extension of time to file the first combined
return can be made.
4) Revocation. An election to be treated as a single taxpayer for
the purposes set forth in IITA Section 502(e) remains in effect until it is
revoked. If a taxpayer ceases to be a member, or was never properly a member,
of a unitary business group for which an election is in effect, the election
will automatically be revoked as to that taxpayer. In the case of a taxpayer
that was improperly included in a combined return and whose election has been
revoked, the Department shall consider the combined return to be the return
filed by the taxpayer only for the limited purposes of determining the
limitations period within which certain actions must occur (e.g., the
limitations period for issuing a notice of deficiency) and shall use the filing
date of the combined return for purposes of determining any late filing
penalty. Once an election is in effect for a taxable year, it cannot be revoked
for that year unless the combined group is not a unitary business group, in
which case the election will automatically be revoked. The Department shall
revoke the election for abusive failure to comply with these regulations, such
as blatant omission of members or a non-responsive designated agent, if the
failure is not rectified after notification to the designated agent. The
designated agent may revoke the election on behalf of all members for any
taxable year by notifying the Department in writing of its intent prior to the
due date for the filing of the return (excluding extensions) at the address
stated in the instructions of Schedule UB.
b) Mandatory
filing of combined returns
1) For taxable years ending on or after December 31, 1993, each
group of eligible members is required to file combined returns and to be
treated as one taxpayer for purposes of any original return, amended return
which includes the same taxpayers of the unitary group which joined in filing
the original return, extension, claim for refund, assessment, collection and
payment and determination of the group's tax liability under the IITA.
2) Each combined group is required to properly complete and file
a combined return (using Form IL-1120 and Schedule UB) by the due date of the
return (including extensions). For the first year for which a combined return
must be filed, a single combined request for extension of time to file the
return can be made by one member acting as designated agent on behalf of the
entire combined group, even though the designated agent will not actually be
appointed until the combined return is filed.