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Illinois State Taxes and Income Tax Forms

Illinois State Income Taxes for Tax Year 2019 (January 1 - Dec. 31, 2019) can be prepared and e-Filed now along with an IRS or Federal Income Tax Return. Federal Tax Return deadline details. Details on how to only prepare and file a 2019 IL Tax Return without a Federal Return. The latest deadline for e-filing Illinois State Tax Returns is October 15, 2020.

efile Illinois tax return
Illinois
"The Prairie State"

 

At this point, 2019 Illinois State Income Tax Return forms (Jan. 1 - Dec. 31, 2019) can be completed and e-Filed along with the IRS Income Tax Return until October 15, 2020. If you owe IRS or Illinois taxes and you filed an extension, do not miss this deadline in order to avoid late filing penalties. If you have not filed any of your 2019 tax returns, you can e-File them until Oct. 15, 2020.

Tip: File your tax return on time, even if you can't pay your taxes owed on time, as the late filing penalties are higher than the late payment penalties.  Estimate your possible IRS penalties by using our free PENALTYucator tool.

If you filed a tax extension, you can e-File your Taxes until October 15, 2020 without a late filing penalty. However, if you owe Taxes and don't pay on time, you might face late tax payment penalties. Tip: File on time, even if you can't pay on time, as the late filing penalties are higher than the late payment penalties.

Prepare and eFile IL - Illinois - and IRS State Tax Returns now including resident, nonresident, or part-year resident returns. However, the IRS and the respective State Tax Agencies require you to e-file a Federal Income Tax Return at the same time you e-file a State Tax Return. This is not an eFile.com policy but an IRS and State Agency policy. Thus, technically you cannot e-File anywhere - not just eFile.com - an Illinois Tax Return without also e-filing the associated IRS Tax Return. But there is good news, please read on.

Find detailed instructions on how you can only prepare and mail in - not eFile - an Illinois 2019 Tax Return - here via eFile.com. However, you must complete and sign the forms online on eFile.com before you download/print and mail the forms to the Illinois Tax Department. You can find Illinois mailing addresses here.

Function
Description
Where Is Your Illinois Tax Refund Money?
Step 1: Sign into your eFile.com account and check acceptance by the Tax Agency.
Step 2: Check your Illinois Tax Refund Status.
Where is Your IRS Refund?
Step 1: Sign into your eFile.com account and check acceptance by the IRS.
Step 2: Check your IRS Tax Refund Status.
Illinois Income Tax Extension
How to correct a rejected Tax Return
If your IL Tax Return was rejected by the IL Tax Agency - not eFile.com - instructions on how to correct a rejected Illinois Tax Return.
Illinois, IRS Late Filing, Tax Payment Penalties

1. Late Filing Penalty: You will be assessed a penalty of $250 or 2% of the tax owed (whatever is less) per month you file your return after the tax return deadline. The penalty is reduced by timely payments or credits. In the event you file your return on time but the return cannot be processed, you will have 30 days to correct the return before any penalty is due. If you do not file your return within 30 days after you receive a notice of non-filing, you will be imposed an additional penalty of $250 or 2% of the taxes owed shown on your return (whatever is greater) without regard to timely payments. Not only will the additional penalty not exceed $5,000, but it will be assessed even if there is no tax due.
2. Late Payment Penalty: This penalty is based on the number of days you submit your total taxes owed late (1-30 days: 2%; 31+ days: 10%). The penalty is 15% of any amount that is not paid until after an audit or investigation of your liability is initiated, and 20% of any amount that is not paid within 30 days after the IL state tax agency sends you an audit-prepared amended return for you to sign and send to the agency. The 20% penalty also applies to the amount you paid within the 30-day period if you fail to sign and return the amended return within that period or if you paid the tax due under protest or subsequently file a claim or refund of the payment.

3. IRS Penalties: Calculate and Estimate your potential IRS Income Tax Return Penalties.
IL Tax Return Mailing Addresses
Find various Illinois Mailing Addresses for tax returns, tax amendments, and tax payments. 
Illinois Income Tax Brackets
Illinois Income Tax Forms
Illinois Unemployment Benefits
The state fully taxes unemployment income at the state level. 

 

Start Federal and Illinois Tax Returns

2020 Illinois Income Tax Filing Deadlines by Tax Year

The majority of deadlines listed here are for Tax Year 2019. Some apply to upcoming Tax Years and some are IRS or Federal deadlines.

Deadline
Type
Description
July 15, 2020 (Deadline has passed)
Tax Year 2019
Income Tax Return
Original Deadline to prepare and e-File IRS and Illinois State Income Tax Returns. You have until October 15, 2020 to complete and e-File your Federal and IL Returns. - eFileIT*
July 15, 2020 (Deadline has passed, but IL grants automatic tax extension.)
2019 Income Tax Extension
October 15, 2020
Tax Year 2019
Income Tax Return after the automatic July 15, 2020 Illinois Tax Extension
Last day to e-File a 2019 Illinois State Income Tax Return for Tax Extension Filers and late eFilers. You can only e-File (to file by paper see below) Illinois Income Tax Return together with an IRS Tax Return. eFileIT*
October 15, 2020 via mail-in Forms.
Forms incl. Mailing Address are listed below.
Tax Year 2019
Income Tax Return after the July 15, 2020 Automatic Illinois Tax Extension
Deadline for taxpayers who got an automatic IL Tax Extension to file their Illinois Income Tax Return by mail-in Forms - the Forms incl. mailing addresses are listed below - is October 15, 2020. (Optionally, the eFileIT* deadline is Oct. 15, 2020). Instructions on how to only - without the IRS return - prepare and file an Illinois State Income Tax Return on eFile.com.
Tax Amendment for all Tax Years
IRS Due Dates
IRS Tax Return, Extension, Amendment Deadlines
2020, 2021, etc.
Other State Tax Return, Extension, Amendment Deadlines
Select respective State Tax Return Deadlines.
2020, 2021, etc.
IRS Federal Income Tax Return, Amendment, Extension Deadlines
April 15, 2023
2019 Illinois Income Tax Return Refund.
IRS Tax Return Refund Claim Deadline
The last day to file - you will not face late filing penalties - and claim your 2019 Illinois Income Tax Return Refund. This deadline does not apply if you owe 2019 Income Taxes.

E-File These 2019 Illinois State Tax Forms

Prepare and efile these state forms for 2019 in conjunction with your federal and state income tax return. As you proceed through the tax interview on efile.com, the application will select the correct state forms for you. You can also select tax forms individually. All these forms will then be e-filed by you to the state tax agency. Instructions on how to only prepare a state income tax return.

Form/Schedule
Description
eFileIT Now*
Form IL-1040
Individual Income Tax Return
Form IL-1310
Refund Due a Deceased Taxpayer
Schedule ICR
Illinois Credits
Schedule M
Other Additions and Subtractions
Schedule NR
Nonresident & Part-Year Resident Computation
Form IL-505-I
Extension Payment Voucher Form. (July 15 deadline has passed. However, you can make Tax Payments online and not have to mail in Voucher Form IL-505-I.)  See below.
Cannot be e-Filed. Mail-in only.
Determines your paycheck IL Tax Withholding amount per employer.
Step 1: Complete and submit to your employer(s).
Step 2: Estimate, Calculate your IRS Tax Withholding now.
Not filed with the State. Submit to Employer only.

* Due to IRS and State Tax Agency tax data sharing and validation requirements, you can only e-file a State Income Tax Return while also e-filing a Federal Income Tax Return. This is not an eFile.com created policy, but all online tax web sites have to adhere to this IRS/state issued tax data sharing policy. You can however prepare all 44 State Income Tax Returns on eFile.com if you have already e-Filed or filed your IRS return. Instructions on how you can ONLY prepare and file State Income Tax Return(s). Only on eFile.com can you prepare, file or e-file unlimited State Tax Returns for one low price and not pay for each State return like you would do on H&R Block® vs. TurboTax®. Dare to Compare Now.

Automatic Illinois State Tax Extension

You can no longer prepare and file an IRS Tax Extension to file a 2019 Tax Return. If you're expecting a refund, you won't face any late filing penalties. However, Illinois grants automatic 6-month extensions to IL taxpayers (which means you do not file an IL extension form) of time to file penalty free beyond the July 15, 2020 due date. The extended e-File deadline is October 15, 2020. Keep in mind however, an Illinois or IRS tax extension does not extend the due date to pay the taxes you owe or income tax liabilities penalty free.

If you owe Illinois and/or IRS income taxes and don't pay them by Tax Day, you will be charged IL and IRS late tax payment penalties. Calculate and estimate IRS late payment penalties. If you expect to owe taxes, and you are going to take advantage of the Illinois automatic extension of time to file, you should have submitted your payment with payment voucher Form IL-505-I, Automatic Extension Payment for Individuals, by July 15, 2020. Though this deadline has passed and you can no longer mail this form with your payment, you can make Tax Payments online and not have to mail the IL-505-I form.

The extended Illinois/IRS eFile deadline is Oct. 15, 2020 - eFileIT* now. If you plan to file or mail-in a Illinois tax return on paper - the Forms and Mailing Address are below - your due date is Oct. 15, 2020. After Oct. 15, 2020, you can complete and sign 2019 Illinois Tax Forms online here on eFile, before you download, print and mail them to the state tax agency. The address is on the form. 

Illinois State Tax Payment Options
You can select one of these payment options either after you have e-filed or filed your 2019 Illinois Tax Return. Alternatively, you can pay IL income tax here prior to filing (e.g with an extension). Plus, you can make online Illinois tax estimated payments for next tax year. If you eFiled your taxes and pay online, you don't have to mail any IL forms (e.g. tax return, extension, or tax estimated form). 
Create an account with MyTax Illinois to submit your payment directly to the state tax agency now (or click the "Make an Individual Income Tax Payment" button on the account creation screen to submit a payment without creating an account). If you already have an account, log into your account to view the status of your payment, cancel a payment, or schedule a future payment
Check the status of your direct payment
This is a free option if you want to pay your taxes owed via your checking or savings account.
Submit a tax payment via the Link2Gov site, the Official Payments site, or the PayILTax site. When you're on the Link2Gov site, click the "Form IL 1040", "Form IL 1040ES" or "Form IL 505-I" link to submit a payment for an individual tax return, estimated taxes, or an extension. If you're paying on the Official Payments site, follow the on-screen prompts to enter and submit your current year payment information (or go here to submit a prior-year IL tax payment or go here to submit estimated IL tax payments). On the PayILTax site, click the "Make a Payment" button and follow all the on-screen prompts to submit your payment. 
Use this payment option if you want to submit your tax payment via your credit card. Be aware that you may also need to pay an additional convenience fee. 
Either complete IL installment Form CPP-1, Installment Payment Plan Request, or Form EG-13-I, Financial and Other Information Statements for Individuals (if you owe over $5,000, including interest and penalties). 
Use this payment option if you cannot pay your tax bill and want to get on a payment plan.
Check or Money Order
On your check or money order, write your Social Security Number (or Numbers if you're Married Filing Jointly). Include a copy of your bill or notice with your payment. Mail the payment to the IL mailing address with payment below. The deadline to submit your 2019 Tax Year payment via mail with payment voucher Form IL-1040 was July 15, 2020. However, you can still submit your payment online without submitting this form using the direct payment or credit card payment options above. 
Use this payment option if you prefer to submit your payment via check, money order, or casher's check in the mail. 
Estimated Tax Payment Options
Choose one of these options: 1) Create an account with MyTax Illinois to submit your estimated payment (or if you already have an account, sign into your account). 2) Submit your estimated tax payment via the Link2Gov site, the Official Payments site, or the PayILtax site. 3) Complete estimated payment voucher Form IL-1040-ES. Include your check or your money order with the voucher payable to "Illinois Department of Revenue". Mail the voucher and check/money order to the Form IL-1040-ES mailing address here. 
Use one of these payment options if you want to submit estimated tax payments rather than submit all the taxes you owe at one time.
You can use these online federal tax payment options before or after your e-File your Income Tax Returns. In addition, you can pay tax extension and tax estimated payments. For estimated payments, you do not have to submit a form. Extension you can eFile on eFile.com for free.
These payment options are independent from preparing and eFiling your tax return on eFile.com. eFile.com offers these payment options for the convenience for all tax payers.

 

Addresses to mail Illinois Income Tax Returns, Amendments, Extensions, or Tax Payments.
IL Tax Return: Address if you expect a Tax Refund or Don't Owe Taxes on your Tax Return
Illinois Department of Revenue 
PO Box 19041
Springfield, IL 62794-9041
IL Tax Return or Extension: Address if you owe Taxes and include payment. Tip: Make Tax Payments online and you will not have to mail any payments. See above.
Illinois Department of Revenue
PO Box 19027
Springfield, IL 62794-9027
IL Tax Amendment: Address for mailing an amended IL Tax Return
Illinois Department of Revenue
PO Box 19047
Springfield, IL 62794-9047
IL Estimated Tax Payments: include Tax Year 2020 Form IL-1040-ES
Illinois Department of Revenue
Springfield, IL 62736-0001

 

Other U.S. States, Territories, and Protectorates.

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