What is the purpose of Form IL-505-I?
The purpose of Form IL-505-I, Automatic Extension Payment, is to
provide taxpayers who are unable to file their tax return by the due
date a means of calculating and remitting their tentative tax liability
(including any other taxes you will report on your Form IL-1040) on or
before the original due date of the return (see "When should I file and
pay?").
Who must file Form IL-505-I?
You must file Form IL-505-I if all of the following apply to you:
you cannot file your tax return by the due date, and
you will owe a tentative tax (complete the Tax Payment Worksheet
on the back of this page to determine this), and
you submit your payment by paper check or money order (i.e.,
you do not use any electronic means, such as electronic funds
transfer, to make your payment).
If Line 7 of the worksheet shows you owe tentative tax, you must
pay the full amount due by the original due date of the return. An
extension of time to file does not extend the amount of time you
have to make your payment.
Do not file Form IL-505-I if:
after you complete the Tax Payment Worksheet, you find that
you do not owe additional tax, or
you make your extension payment electronically by credit card,
electronic funds transfer (EFT), or bank account debit.
If an unpaid liability is disclosed when you file your return,
you may owe penalty and interest charges in addition to the tax. See
“Will I owe penalties and interest?”
What are the extensions?
Automatic Illinois six-month extension
We automatically grant you a six-month extension of time to file your
tax return. For calendar year filers, the filing date is automatically
extended to October 15. You are not required to file Form IL-505-I to
obtain this automatic extension. However, you must pay any tentative
tax due by the original due date of your return in order to avoid any
late-payment penalty and interest on unpaid tax.
Additional extension beyond six months
If you cannot file your tax return within the automatic six-month
extension period, we will grant you an extension of more than six
months to file only if the Internal Revenue Service (IRS) grants you
an additional extension.
When should I file and pay?
If you owe any tentative tax, and you pay with a paper check or
money order, file Form IL-505-I along with your payment on or before
the original due date of your annual return, or as soon as you realize
you owe tentative tax.
Where should I file?
Mail your Form IL-505-I to: Illinois Department of Revenue,
P.O. Box 19005, Springfield, Illinois 62794-9005. Make your check
or money order payable to “Illinois Department of Revenue.”
Be sure to write your Social Security number, tax year, and
“IL-505-I” on your payment.
Will I owe penalties and interest?
You will owe a
late-filing penalty if you do not file a processable return by the
extended due date,
late-payment penalty if you do not pay the tax you owe by the
original due date of the return, and
bad check penalty if your remittance is not honored by your
financial institution.
You will owe interest on tax from the day after the original due date
of your return through the date you pay the tax. We will bill you for
penalties and interest.
For more information about penalties and interest, see
Publication 103, Penalties and Interest for Illinois Taxes. To receive
a copy of this publication, see "What if I need additional forms or
assistance?" on the back of this form.
What should I attach to my Form IL-1040?
If you file your return within the automatic six-month extension period,
do not
attach anything to your return to explain your delayed filing.
If you file your return after the automatic six-month extension period
and the IRS grants you an extension of more than six months, you
must attach a copy of the document granting your federal extension
to your tax return to avoid a late-filing penalty.
Be sure to claim any Form IL-505-I payments on your 2020
Form IL-1040, Line 26.
What if I need additional forms or assistance?
• Visit our website at tax.illinois.gov for assistance and forms
• Write to us at:
ILLINOIS DEPARTMENT OF REVENUE
PO BOX 19001
SPRINGFIELD, ILLINOIS 62794-9001
• Call 1 800 732-8866 or 217 782-3336 (TDD, telecommunications
device for the deaf, at 1 800 544-5304).
• Visit a taxpayer assistance office - 8:00 a.m. to 5:00 p.m. (Spring-
field office) and 8:30 a.m. to 5:00 p.m. (all other offices), Monday
through Friday.
What if I want to pay electronically?
Use one of the following electronic payment options:
Online – Visit our website at mytax.illinois.gov to have your
payment taken from your checking or savings account. You will
need your IL-PIN (Illinois Personal Identification Number).
Credit Card – Use your MasterCard, Discover, American Express,
or Visa. The credit card service provider will assess a convenience
fee. Have your credit card ready and visit our website or call one of
the following:
Official Payments Corporation at 1 833 747-1434.
Value Payment Systems at 1 888 9-PAY-ILS (1 888 972-9457).
Link2Gov/FIS at 1 877 57-TAXES (1 877 578-2937).
Electronic Funds Transfer – Complete Form EFT-1, Authorization
Agreement for Certain Electronic Payments. To print a copy of this
form or for more information about this program, visit our website at
tax.illinois.gov.
Illinois Department of Revenue
IL-505-I Automatic Extension Payment 2020
for Individuals Filing Form IL-1040
IL-505-I (R-12/20)
Printed by authority of the State of Illinois, web only, 1.
Page 1 of 3
This form is authorized as outlined under the Illinois Income Tax Act. Disclosure of
this information is required. Failure to provide information could result in a penalty.
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