Illinois 2011-0228-MgtSrv-min is a service provided by the Illinois Department of Revenue. This service allows businesses to manage their tax obligations and prepare returns, make payments, and review account information online. There are three types of Illinois 2011-0228-MgtSrv-min: the Taxpayer Access Point (TAP), the Online Taxpayer Access System (OTIS), and the Illinois Business Portal (IBP). The TAP allows taxpayers to access their accounts, view payment history, and make payments. The OTIS provides taxpayers with the ability to review their tax filing history and tax return information. And the IBP offers businesses the ability to view and manage their tax accounts, register for tax accounts, and file and pay taxes online.