30 ILCS 105/13.4

All appropriations recommended to the General Assembly by the Governor in the State Budget submitted pursuant to Section 50-5 of the State Budget Law (15 ILCS 20/50-5) shall be incorporated into and prepared as one or more appropriation bills which shall either be introduced in the General Assembly or submitted to the legislative leaders of both the Senate and the House of Representatives not later than 2 session days after the submission of the Governor's budget recommendations, as provided in Section 50-5 of the State Budget Law of the Civil Administrative Code of Illinois, immediately preceding the start of the fiscal year for which the Budget is recommended.