A CLERK REACHES for a container of marijuana buds for a customer at a marijuana dispensary in Detroit. (AP Photo/Carlos Osorio, file)

A group of cannabis industry advocates were unable to convince a Michigan Court of Claims judge that they would face irreparable harm if a new 24% wholesale tax on marijuana went into effect to fund the state’s future road repairs.

In an opinion issued Monday, Court of Claims Judge Sima Patel said she was denying a request for a preliminary injunction from the plaintiffs in Holistic Research Group Inc./Michigan Cannabis Industry Association v. Michigan Department of Treasury.

The consolidated lawsuits posited that the new tax, passed in October as part of a comprehensive 2025-26 budget deal to raise new revenue for road repairs and rebuilds through 2030,

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