Please be advised that we have received the below information from the Illinois Department of Revenue.
IL 1120, 1120S, 1065, and 1041 returns including a payment on or between 12/17/2023 – 12/31/2023 are erroneously being rejected by Illinois. If a payment needs to be made, either the payment should be mailed or another electronic means needs to be selected see Section 3 of the 2023 BIT MeF Implementation Guide (BTR-36).
