Illinois IL My Tax Portal

MyTax Illinois is the official online tax portal operated by the Illinois Department of Revenue for state tax administration. It serves individual taxpayers, businesses, and tax preparers who need to manage Illinois state tax obligations electronically. The platform allows users to file returns for taxes such as individual income tax, sales tax, withholding tax, and various business taxes. It also enables users to make payments, view account balances, check refund status, register a new business, and respond to notices from the department. Access is provided through secure login credentials, with options for both registered account holders and guest users to complete certain transactions without full account setup.