Download Form IL-1040-ES (PDF)

Illinois Estimated Income Tax Return updated 02/2013

Printable Illinois Income Tax Form IL-1040-ES

If you owe more then $500 a year in income tax on April 15th (because of self employment or other income without tax withholding) you must file a quarterly income tax payment using the worksheet and payment voucher included in Illinois form IL-1040-ES. For more information, see the Illinois Income Tax page.

Source: http://www.revenue.state.il.us/TaxForms/IncmCurrentYear/Individual/IL-1040-ES.pdf