5 ILCS 420/2-110
"Honorarium" means a payment of money to a member of the General Assembly for an appearance or speech, excluding any actual and necessary travel expenses incurred by the member of the General Assembly (and one relative) to the extent that those expenses are paid by any other person. "Honorarium" does not include (i) cash payments made on behalf of a member of the General Assembly to an organization described under Section 501(c)(3) of the Internal Revenue Code of 1986, (ii) an agent's fee or commission, or (iii) funds reported under Article 9 of the Election Code.
"Travel expense" means the reasonable cost of transportation and the reasonable cost of lodging and meals incurred while a person is away from his or her residence or principal place of employment.
5 ILCS 420/2-110