Illinois Department of Revenue
Amended Small Business
2013 IL-1120-ST-X
Corporation Replacement
Tax Return
For tax years ending on or after December 31, 2013
Write the amount you
Indicate what tax year you are amending: Tax year beginning
, ending
are paying.
month
day
year
month
day
year
If you are filing an amended return for tax years ending before December 31, 2013,
you cannot use this form. For prior years, use the amended return form for that year.
$
Write your federal employer identification no. (FEIN).
Step 1: Identify your small business corporation
I
Write your complete legal business name.
A
If you have a name change, check this box.
Check this box if you are a member of a
J
unitary business group, and write the FEIN of
Name:
the member filing the Schedule UB, Combined
Write your mailing address.
B
Apportionment for Unitary Business Groups.
If you have an address change, check this box.
C/O:
Write your North American Industry Classification
K
Mailing address:
System Code (NAICS). See instructions.
City:
State:
ZIP:
Write your Illinois corporate file (charter) number.
L
Check this box if you are filing this form only to report an increased
C
net loss on Line 49, Column B.
Check this box if you are filing Form IL-1120-ST-X
M
Check this box if you attached Form IL-4562.
D
before the extended due date and making the
Check this box if you attached Schedule M.
E
election to treat all nonbusiness income
as business income.
Check this box if you attached Schedule 80/20.
F
If you have completed the following federal forms,
N
Check this box if you attached Schedule 1299-A.
G
check the box and attach them to this return, if you
Check the applicable box for the type of change being made.
H
have not previously done so.
NLD
State change
Federal change
Federal Form 8886
Federal Schedule M-3
If a federal change, check one:
Check this box if you are making a discharge of
O
Partial agreed
Finalized
indebtedness adjustment on Line 48, or
Schedule NLD or UB/NLD. (U.S. Form 982)
Write the finalization date
Attach your federal finalization to this return.
If you owe tax on Line 70, complete a payment voucher, Form IL-1120-ST-X-V, make your check payable to
“Illinois Department of Revenue” and attach them here.
Write the amount of your payment on the top of this page in the space provided.
Mail this return to: Illinois Department of Revenue, P.O. Box 19016, Springfield, IL 62794-9016
Step 2: Explain the changes on this return
This form is authorized as outlined by the Illinois Income Tax Act. Disclosure of this
information is REQUIRED. Failure to provide information could result in a penalty.
Page 1 of 4
IL-1120-ST-X (R-12/13)