This main form is used by all Illinois individual taxpayers to report their annual income to determine the tax they owe or refund they are due. Let’s see who needs to file it below:
An Illinois Resident, Part- year and Nonresident who has a payment due to the Illinois Department of Revenue (IDOR) will have to attach IL-1040V along with the main form IL-1040.
Nonresidents and Part-year Residents of Illinois are supposed to attach Schedule NR along with the main form to consolidate all the income that is taxed by Illinois during the tax year and to figure their Illinois Income Tax.
Residents, Nonresidents and Part-year Residents of Illinois who have Additions and Subtractions in their individual tax return use Schedule M. This form allows them to figure the total amount of additions they must include on Form IL-1040, Line 3 and subtractions they may claim on Form IL-1040, Line 7.
A resident or a part-year resident of Illinois who paid income tax to another state on income they earned while they were an Illinois resident is reported in Schedule CR. Taxpayers may use this credit only if they filed a required tax return with the other state, they must use information from the tax return they filed with the other state to complete Schedule CR.
Schedule ICR allows taxpayer to figure out property tax, and earned income credits they may claim in Form IL-1040, Individual Income Tax Return.
Illinois Taxpayers who wish to contribute to one or more charitable contribution funds while filing their personal income tax in any whole-dollar amount of $1 or more will have to attach Schedule G along with their main form. The following are the funds for which taxpayers can make contributions to:
Illinois taxpayers who want to figure penalties they may owe if they did not make timely estimated payments or pay the tax they owe by the original due date, or file a return that can be processed by the extended due date should attach IL 2210 along with the main form.