Miss. Code Ann. § 27-103-114: Miss. Code Ann. § 27-103-114

The Legislative Budget Office shall prepare and include in the proposed budget a multiyear plan for all agencies included in the proposed budget, for all sources of funding, and for such program categories as the Legislative Budget Office identifies. Such plan shall be based on the actual experience of the immediately preceding three (3) fiscal years, on the approved current fiscal year budget, and on estimates for at least the four (4) succeeding fiscal years.