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MAIN Arrow to Your MoneyYour Money Arrow to TaxesTaxes Arrow to IRSIRS Arrow to Illinois TaxesIllinois Taxes

illinois state sealIllinois imposes a flat 5 percent of a taxpayer's federal adjusted gross income. Illinois residents must file their personal income tax using the Illinois Individual Resident Income Tax Form (IL-1040) by April 15. When that date falls on a weekend or holiday, filers get until the next business day to submit their state returns.

This year, the filing deadline to submit 2016 tax returns is Tuesday, April 18, 2017, rather than the traditional April 15 date. Since April 15 falls on a Saturday this year, and Washington, D.C. will celebrate Emancipation Day on that Monday, the deadline will be pushed to the following Tuesday for most of the nation.




Illinois Tax Help

Where's my Illinois tax refund

1 800 732-8866
1 217 782-3336

Business Hotline:
1 217 524-4772


Illinois Department of Revenue - Downloadable forms, instructions, how to's information, and resources.

Illinois Individuals Index - Forms and instructions on direct deposit of refunds and filing electronically.

Illinois Forms Index - Downloadable PDF forms for individual IL-1040 and business taxes, business registration forms, tax exempt, withholding and other Illinois state tax related forms.

Illinois Electronic Filing - Information for tax professionals with the application to file Illinois income tax returns electronically, individual income tax electronic filing declaration, fill-in forms, instructions.

Illinois Publications Index - Tax publications, taxpayer guides, annual reports, reference manuals and statistics.



Running late? Illinois Tax Extension Forms


...also be sure to file your Federal tax extension form.

Prior Year IL-1040 Illinois Individual Income Tax Forms
2010 2011 2012 2013 2014 2015

 

Where to mail FEDERAL IRS tax forms within Illinois:

IRS Form
If you ARE NOT enclosing a payment, use this address: If you ARE enclosing payment, use this address:
1040:
Department of the Treasury
Internal Revenue Service
Fresno, CA  93888-0002
Internal Revenue Service
P.O. Box 802501
Cincinnati, OH 45280-2501
1040A:
Department of the Treasury
Internal Revenue Service
Fresno, CA  93888-0015
Internal Revenue Service
P.O. Box 802501
Cincinnati, OH 45280-2501
1040EZ: Department of the Treasury
Internal Revenue Service
Fresno, CA  93888-0014
Internal Revenue Service
P.O. Box 802501
Cincinnati, OH 45280-2501

 

Other useful Web links to IL taxpayers associations, CPA groups,
business organizations or general U.S. state tax how to's & information :

Moving to Illinois - Cost of Living, Taxes, Jobs, Schools

Taxpayers Federation of Illinois



Related Tax How To's :

  Is The Earned Income Tax Credit for You? Tax Tips & Tricks
  Get the Most from Your Paycheck How to Avoid an IRS Audit

 

IRS Tax News

IRS Tax News & Updates

 

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