1120 Illinois frequently asked questions

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Annual Reports

Where do I enter the state or country of incorporation?

Apportionment

How does the application calculate apportionment for Illinois returns?

Combined returns

How do I prepare a combined unitary return?

What do I file for a combined unitary return?

How do I extend my combined unitary return?

How do I make estimated payments for my combined unitary return?

Why is apportionment on Schedule UB, Step 4 not calculating for the members of the Illinois combined group?

How do I determine the designated agent for my combined return?

Can I electronically file my combined return?

Extensions

Why isn’t my Illinois extension printing?

Luxury auto treatment on Form IL-4562

I have an addback for bonus depreciation on Form IL-4562, line 1 for a luxury auto that was placed into service in the current year, but I don’t I see a subtraction on Form IL-4562, line 5 for this asset. Why is there no subtraction?

Net loss deduction

How should losses be entered in Screen ILNOL for the completion of Schedule NLD?

How much net loss can Illinois corporations take?

How does the ILDOR determine the loss year that expires first?

QSSS returns

How do I prepare a QSSS return?

S Corporation prepayments

How do I make prepayments for S Corporations?

Shareholders

Where must the shareholder information be entered in order for Schedules B and K-1-P to print?

How do I indicate a shareholder as a nonresident?

Unitary returns

How do I prepare a unitary return with C corporation and pass-through members?

How do I prepare a unitary return consisting of only pass-through members?

What do I file in a unitary return?

How do I extend my unitary return?

How do I make estimated payments for my unitary return?

How do I determine the designated agent for my unitary return?

How do I share a unitary member’s data?

Can I electronically file the unitary return?

Electronic filing - General

Is electronic filing mandated in Illinois?

What are the current net loss carryforward rules?

What Illinois forms / schedules can be electronically filed with 1120-IL?

What cannot be electronically filed with the Illinois Department of Revenue?

What information is required by the Illinois Department of Revenue when electronically filing a corporate return?

Can I electronically file only the Illinois return?

Does the Illinois Department of Revenue have a signature form for corporate returns?

Can I electronically file the Illinois return when the federal return is not supported for electronic filing?

How many years of returns does Illinois support for electronic filing?

Why am I getting an alert in my state acknowledgement?

There is an ELF critical diagnostic requiring an officer SSN; however, the officer is a foreign citizen and/or does not have a Social Security number. What should be entered?

Electronic filing - Estimates

How do I electronically file the Illinois estimates?

Electronic filing - Extensions

Can I electronically file only the Illinois extension?

Electronic filing - Payments / Refunds

What methods of payment are available for a balance due return?

What methods of payment are available for a balance due extension?

Where do I enter bank information for electronic funds withdrawal or direct deposit?

Electronic filing - PDF attachments

What PDF attachments are automatically included with Illinois electronic files?

Electronic filing - Previously filed returns

What if I need to make a change to a return that has been electronically filed?

More than 48 hours have passed and I have not received an acknowledgement from the Illinois Revenue Administration Division. What should I do?

What is the grace period for resubmitting rejected returns?

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