Illinoisans can begin filing their 2021 income tax returns at the end of this month. This year’s tax filing season will begin Jan. 24, which is 17 days earlier than last year. The federal Internal Revenue Service (IRS) is warning with the resurgence of COVID-19, there could be some refund or processing delays. To try and avoid delays, IRS Commissioner Chuck Rettig says to: Avoid filing a paper return and set up a way to have your refunds directly deposited. Report COVID-19 Economic Impact and advance Child Tax Credit payments. Doing this correctly can avoid delays. The deadline for filing individual income tax returns is April 18. The IRS says they anticipate most taxpayers to receive funding within 21 days of electronically filing.