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Illinois Department of Revenue
2010 Form IL-1040-X
Amended Individual Income Tax Return
Step 1: Personal information
Do not write above this line.
Print or type your current Social Security number(s), name(s), and address.
Your Social Security number
Spouse’s Social Security number
Your ﬁ rst name and initial
Spouse’s ﬁ rst name and initial (and last name - only if different)
Your last name
ZIP or Postal Code
Foreign Nation, if not U.S.A.
If your Social Security number(s), name(s), or address listed above are different from your previously ﬁ led return, check the box.
Single or head of household
Married ﬁ ling jointly
Married ﬁ ling separately
Check the box that identiﬁ es why you are making this change.
Attach a copy of your federal ﬁ nalization. (see instructions)
____ ___ ____
____ ____ ____
Federal change accepted on
NOL accepted on
Step 2: Reason for ﬁ ling
If you are changing your Illinois return due to a change to your federal return that resulted in an overpayment, do not ﬁ le this form
until you receive notiﬁ cation that the Internal Revenue Service (IRS) has accepted the changes. See ‘‘How long do I have to correct or
amend my return?’’ in the instructions.
On what date did you ﬁ le your original Form IL-1040 or your latest Form IL-1040-X?
Did you ﬁ le a U.S. Form 1040X? If "yes," you must attach a copy to this form.
If your U.S. Form 1040X resulted in
an overpayment, you must also attach a copy of the notiﬁ cation you received from the Internal Revenue Service (IRS) stating they
accepted the changes shown on your U.S. Form 1040X (e.g., a refund check, "Statement of Account," agreement, or judgment),
and write the date the IRS notiﬁ ed you (not the date you ﬁ led your U.S. 1040X) in the appropriate space in Step 1, Line E.
an amount due, write the date you ﬁ led your U.S. Form 1040X and paid the tax due in the appropriate space in Step 1, Line E.
Failure to provide this date could result in an assessment of a late-payment penalty.
Explain, in detail, the reason(s) for ﬁ ling this amended return. Attach a separate sheet if necessary.
Step 3: Financial information
(Line numbers may not match your original return.)
Federal adjusted gross income
Federally tax-exempt interest and dividend income
Other additions (attach Schedule M with amended ﬁ gures)
Total income. Add Lines 1 through 3.
Federally taxed Social Security and federally taxed retirement plan income
Illinois Income Tax overpayment included in U.S. 1040, Line 10 (attach U.S. 1040, page 1)
Other subtractions (attach Schedule M with amended ﬁ gures)
Total subtractions. Add Lines 5 through 7.
Illinois base income. Subtract Line 8 from Line 4.
Number of exemptions:
yourself and your dependents
65 years or older or legally blind
Add Lines 10a and 10b. This is your exemption allowance.
Residents only: Net income. Subtract Line 10c from Line 9.
Nonresidents and part-year residents only: Write your Illinois base
income from Schedule NR. (attach Schedule NR with amended ﬁ gures)
Residents: Multiply Line 11 by 3% (.03).
Nonresidents and part-year residents: Write the tax before recapture of investment credits from Schedule NR.
Recapture of investment tax credits (attach Schedule 4255)
Total tax. Add Lines 13 and 14.
Ofﬁ cial Use
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