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Illinois Department of Revenue
Estimated Income and Replacement
IL-1120-ES
2015
Tax Payments for Corporations
Where should I mail my payments?
Who must file estimated payments?
You should mail your payments, with your voucher, to
If you are a corporation (other than an S corporation), you must
make payments of estimated tax if you reasonably expect your
ILLINOIS DEPARTMENT OF REVENUE
income and replacement tax liability to exceed $400 after Illinois
PO BOX 19045
tax credits and withholding payments made on your behalf.
SPRINGFIELD IL 62794-9045
You should complete the worksheet in Step 1 to figure your
Do not send payments to commercial bank depositories as
designated by the Internal Revenue Service.
estimated tax for 2015 and to determine if you are required to
make estimated tax payments.
What if I am a unitary filer?
Taxpayers with short tax years must make estimated
Unitary business groups must make estimated payments on a
payments. See Illinois Income Tax Regulations, Section
combined basis using the designated agent’s federal employer
100.8010(f).
identification number (FEIN) only. For more information about
When are estimated payments due?
designated agents or combined estimated payments, refer
to Illinois Income Tax Regulations, Sections 100.5220 and
The due dates for filing your estimated payments are the 15th day
100.5230, respectively.
of the 4th, 6th, 9th, and 12th months of your tax year.
What if I do not make my payments?
Attach each payment to the Form IL-1120-ES voucher. Do
If you do not pay the required estimated payments on time, you
not send estimated tax payments with your Form IL-1120,
may be assessed a late-payment penalty. We will apply each
Corporation Income and Replacement Tax Return. Make
payment to the earliest due date until that liability is paid, unless
your check or money order payable to “Illinois Department of
you provide specific instructions to apply it to another period.
Revenue.”
You may also be assessed a bad check penalty if your
We encourage you to make your payments electronically
remittance is not honored by your financial institution.
using MyTax Illinois or Modernized E-File (MeF) systems, or
you may use Form EFT-1, Authorization Agreement for Certain
For more information about penalties and interest, see
Electronic Payments, to set up ACH credit or phone debit. These
Publication 103, Penalties and Interest for Illinois Taxes.
options can be found on our website at tax.illinois.gov. If you
What if I need additional assistance?
make your payments using MyTax Illinois, MeF, or EFT, do not
send us your IL-1120-ES forms.
•
Visit our website at tax.illinois.gov;
You must use one of our electronic payment options
•
Call our Taxpayer Assistance Division at 1 800 732-8866,
if the Department has notified you that you are required to make
217 782-3336; or
payments electronically.
•
Call our TDD (telecommunications device for the deaf) at
1 800 544-5304.
Our office hours are 8 a.m. to 5 p.m., Monday through Friday.
IL-1120-ES (R-12/14)
Page 1 of 4
Estimated Income and Replacement
Illinois Department of Revenue
IL-1120-ES
Tax Payment for Corporations
(R-12/14)
Official use only
Mail to Illinois Department of Revenue,
Estimated tax payment due date
• 15th day of the 4th month
P.O. Box 19045, Springfield, IL 62794-9045.
FEIN:
Tax year ending
Month
Year
Corporation
name:
$
C/O:
Enter your payment amount on this line.
Mailing
Return this voucher with check or money order
address
:
payable to “Illinois Department of Revenue.”
City:
State:
ZIP: