The instructions for Form IL-1040-X state to write the total amount of all previous overpayments, refunds, and credit carry forward from your original IL-1040 or previously filed IL-1040-X. I have not received my refund. Should I include it here?
Yes. If you are expecting a refund based on your original filing, whether you have received it or not, you must include that amount on your Form IL-1040-X.