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There are no special filing provisions that exempt students from filing Illinois income tax returns. You must file a Form IL-1040, Individual Income Tax Return, if you are an Illinois resident and: You were required to file a federal income tax return.

According to Illinois Instructions for Form IL1040, there are certain stipulations that will require you to file an Illinois tax return. You must file an Illinois tax return if: You are an Illinois resident AND: You were required to file a federal return.

If you're an Illinois resident, you must file an Illinois tax return if you were required to file a federal tax return, or if you were not required to file a federal return, but your Illinois base income from line 9 is greater than your Illinois exemption allowance.

The Illinois Tax Rate All residents and non-residents who receive income in the state must pay the state income tax. ... The Illinois state tax rate is 4.95 percent effective July 14, 2017. It was 3.75 percent prior to this date.

Illinois State Taxes and Income Tax Forms. Illinois State Income Tax Return forms for Tax Year 2018 (Jan. 1 - Dec. 31, 2018) can be e-Filed in conjunction with an IRS Income Tax Return until October 15, 2019. In January 2020, you can e-File Tax Year 2019.

If you are a part- year resident, include only the tax on income earned or received while an Illinois resident. For example, you must reduce the amount of tax paid to another state by any credit allowed by that state for taxes you paid to Illinois.

Automatic Illinois State Tax Extension The extended tax return due date is October 15, 2019. If you expect to owe income taxes, you should submit your payment with payment voucher Form IL-505-I, Automatic Extension Payment for Individuals, by April 15, 2019.

The due date for filing your 2018 Form IL-1040 and paying any tax you owe is April 15, 2019.

SPRINGFIELD The Illinois Department of Revenue ( IDOR ) will begin accepting 2018 state individual income tax returns on Monday, January 28, the same date that the Internal Revenue Service ( IRS ) begins accepting federal individual income tax returns.

File online - File online at MyTax Illinois. ... File by mail - You can use Form ST-1 and file and pay through the mail.

Filing an Extension in Illinois You are automatically allowed an extension of up to six months to file your tax return without filing an extension form. An extension to file your return is not an extension of time to pay your taxes.

Yes, you do. Your resident state taxes all of your income regardless of where you earn it. As you mention, when the two states have a reciprocal agreement, the nonresident state agrees not to collect tax on your income. ... Illinois tax on the 10,000 is 400.

The Illinois Tax Rate All residents and non-residents who receive income in the state must pay the state income tax. If you work in Illinois and live in any other state except Wisconsin, Iowa, Kentucky and Michigan, you must pay income tax to Illinois on any income you earn there.

The easy rule is that you must pay non-resident income taxes for the state in which you work and resident income taxes for the state in which you live, while filing income tax returns for both states.

The state of Illinois has a flat income tax, which means that everyone, regardless of income, is taxed at the same rate. That makes it relatively easy to predict the income tax you will have to pay. The income tax rate in Illinois is 4.95%, after an increase (from 3.75%) in 2017.