Filing Extensions for Utility Providers
Illinois Department of Revenue publication FY 2002-30 Filing Extensions for Utility Providers, Informational Bulletin To: Natural Gas or Electricity Providers. Beginning January 1, 2003, we are changing our process for extension to file returns. If you request an extension to file your return and receive our approval, you must pay all of the tax you owe on or before the due date of the return by using Form RPU-31, Utility Tax Filing Extension Deposit Payment. The extension only applies to the filing of the return - not to the payment of the tax due.