The Illinois Department of Revenue alerts taxpayers to common errors to avoid when preparing tax returns
•March 26, 2025•
The Illinois Department of Revenue (IDOR) is advising taxpayers to be vigilant when preparing tax returns in order to avoid several common errors which can lead to delays, rejections, or even penalties.
“We encourage taxpayers to file electronically and review their information carefully in order to ensure their returns are complete and accurate,” said` IDOR Director David Harris. “Mistakes on returns can have negative consequences, such as delays in processing refunds, or even the rejection of returns.”
The following are common filing errors to avoid: