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Illinois Department of Revenue
Amended Composite Income
Do not write in this box.
2009 IL-1023-C-X
and Replacement Tax Return
For tax years ending on or after December 31, 2009
Indicate what tax year you are amending: Tax year beginning ___/___/______, ending ___/___/ ______
Write the amount you
are paying.
If you are fi ling an amended return for tax years ending before December 31, 2009,
$_________________
you cannot use this form. For prior years, use the amended return form for that year.
Step 1: Provide the following information
A
C
If you have a change, check this box.
Write your federal employer identifi cation number (FEIN).
6 6 6
____________________________________________________
___ ___ - ___ ___ ___ ___ ___ ___ ___
Name of partnership or subchapter S corporation
D
Check the applicable box for the type of change being made.
____________________________________________________
In care of
State change
Federal change:
____________________________________________________
If a federal change, check one:
Partial agreed
Finalized
Mailing address
If fi nalized, write the fi nalization date: ____/____/______
____________________________________________________
Month
Day
Year
City
State
Zip
E
Check this box if you are fi ling a “corrected” return.
B
Check the box that identifi es the return you fi led.
F
Check this box if any partners or shareholders
included are trust members.
Form IL-1065
Form IL-1120-ST
G
Check this box if the partners or shareholders included
are individuals and/or estate members only.
Step 2: Explain the changes on this return
Step 3: Figure your income and net income tax
A
B
As most recently
reported or adjusted
Corrected amount
1 a
1a
1a
Modifi ed base income of the partnership or subchapter S corporation.
______________ 00
______________ 00
.
.
b
1b
1b
Total percentage of ownership for resident members.
_______________
_______________
c
1c
1c
Multiply Line 1a by Line 1b.
______________ 00
______________ 00
2 a
2a
2a
Modifi ed base income allocable to Illinois.
______________ 00
______________ 00
.
.
b
2b
2b
Total percentage of ownership for nonresident members.
_______________
_______________
c
2c
2c
Multiply Line 2a by Line 2b.
______________ 00
______________ 00
3
3
3
Add Lines 1c and 2c. This amount is your income.
______________ 00
______________ 00
4
4
4
Income tax before credits. Multiply Line 3 by 3% (.03).
______________ 00
______________ 00
5
5
5
Income tax credits. (Schedule 1299-A, see instructions.)
______________ 00
______________ 00
`` 6
Net income tax. Subtract Line 5 from Line 4.
6
6
If negative, write “0”.
______________ 00
______________ 00
Step 4: Figure your net replacement tax
(Complete only if this return includes any trust members.)
7
7
7
Income included in Line 3 that is subject to replacement tax.
______________ 00
______________ 00
8
8
8
Replacement tax before credits. Multiply Line 7 by 1.5% (.015).
______________ 00
______________ 00
9
9
9
Investment credits. (Form IL-477, see instructions.)
______________ 00
______________ 00
10
Net replacement tax. Subtract Line 9 from Line 8.
10
10
If negative, write “0”.
______________ 00
______________ 00
*932001110*
IL-1023-C-X front (R-12/09)