Estimated Tax Worksheet
Complete the Estimated Tax Worksheet to figure your estimated tax and
the amount of any required payments.
If your income changes during the tax year,
refigure the Estimated Tax Worksheet based on your changes.
Enter the refigured amount from Line 10 on your Amended
Estimated Tax Worksheet, Line 1.
follow the Amended Estimated Tax Worksheet instructions for
Lines 2 through 8.
Fiscal-year taxpayers – Please adjust the due dates to
correspond to your tax year.
Electronic Payment Options
If you determine that you must make estimated tax payments, we
encourage you to 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
Illinois Department of Revenue
IL-1040-ES Estimated Income Tax Payments for Individuals 2021
If you do not receive your income
evenly throughout the year or if you must
begin making estimated payments in
midyear, see Form IL-2210, Computation of
Penalties for Individuals, for further details on
annualizing your income.
When are my payments due?
Your first estimated payment is due by
April 15, 2021. You may either pay all of
your estimated tax at that time or pay your
estimated tax in four equal installments that
are due on April 15, 2021; June 15, 2021;
September 15, 2021; and January 18, 2022.
If you file on a fiscal-year basis,
please adjust all the due dates to correspond
to your tax year.
Are there any exceptions?
You do not have to make estimated
payments if you are
65 years or older and permanently living in
a nursing home or
a farmer. We consider you a farmer if at
least two-thirds of your total federal gross
income is from farming.
Am I required to make estimated
income tax payments?
You must make estimated income tax
payments if you reasonably expect your 2021
tax liability to exceed $1,000 after subtracting
your Illinois withholding, pass-through
withholding, and tax credits for
income tax paid to other states,
Illinois Property Tax paid,
education expenses,
the Earned Income Credit, and
Schedule 1299-C, Income Tax
Subtractions and Credits (for individuals).
You will likely need to make estimated
payments if your income is either fully or
partially exempt from Illinois withholding.
Complete the Estimated Tax Worksheet to
figure your estimated tax and to determine
if you are required to make estimated tax
payments. If you plan to file a joint income
tax return, you must figure your estimated
tax on your joint income.
If you determine that you are required to
make estimated payments, you should
pay 100 percent of the tax. If your income
changes during the year, you should
complete the amended worksheet.
What if I do not make my payments?
You may be assessed a late-payment
penalty if you do not pay the required
estimated payments on time. We will apply
each payment to the earliest due date until
that liability is paid, unless you provide
specific instructions to apply it to another
period. However, if you pay at least 90 percent
of this year’s tax or at least 100 percent of last
year’s tax in four equal timely installments,
you may not be subject to this penalty.
For more information about penalties and
interest, see Publication 103, Penalties and
Interest for Illinois Taxes.
What if I need additional assistance?
If you need additional assistance,
• visit our website at tax.illinois.gov,
• call 1 800 732-8866 or 217 782-3336
(TDD, telecommunications device for the
deaf, at 1 800 544-5304),
• write to us at Illinois Department of
Revenue, P.O. Box 19044, Springfield,
Illinois 62794-9044, or
• visit a regional office.
Our office hours are 8:00 a.m. to 5:00 p.m.
(Springfield office) and 8:30 a.m. to 5:00 p.m.
(all other regional offices), Monday through
Friday.
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.
If you pay electronically, do not send us your payment
voucher.
Estimated Tax Voucher
If you pay by check or money order, complete Form IL-1040-ES.
Enter your Social Security number, and, if you are filing a joint
return, enter your spouse’s Social Security number. Enter these
numbers in the order they will appear on your Form IL-1040,
Individual Income Tax Return.
Enter your name, and, if you are filing a joint return, enter your
spouse’s name. Also, enter your address and phone number.
Enter the amount you are paying from your Estimated Tax
Worksheet, Line 11, on the “Amount of payment” line.
Detach the voucher, and enclose it with your payment. Print
your Social Security number(s), tax year, and “IL-1040-ES” on your
payment. Mail both to the address shown on the voucher. Complete
your Record of Estimated Tax Payments on the next page.
Form IL-1041, IL-1065, and IL-1120-ST filers – Do not
use Form IL-1040-ES vouchers. Use
the voucher associated with your
return type
to make any voluntary prepayments of tax.
Page 1 of 2
IL-1040-ES (R-12/20)
Printed by authority of the State of Illinois, web only, 1.
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.
