MI HB4951

Imposes a 24% excise tax on the wholesale price of marijuana beginning January 1, 2026, applied to sales from marijuana establishments to retailers, marijuana cultivated and processed by retailers for their own sale, and transfers from provisioning centers to retailers

Creates the comprehensive road funding fund in the state treasury to receive a portion of the tax revenue and fund implementation and administration of the act

Allocates $3,000,000 to the comprehensive road funding fund for fiscal year 2025-2026, then $500,000 annually (adjusted for inflation) in subsequent years, with the remaining revenue going to the neighborhood road fund

Defines "wholesale price" as the actual price paid between unaffiliated parties, or the average wholesale price (calculated quarterly by the Department of Treasury) for transactions between affiliated parties

Takes effect only if House Bills 4183, 4961, and 4968 of the 103rd Legislature are also enacted into law; approved by the Governor on October 7, 2025