Marijuana Under Fire in Michigan

Marijuana in Michigan is facing renewed challenges as lawmakers push for higher taxes and regulatory changes that critics argue undermine the voter-approved legalization of 2018. Court battles, legislative maneuvers, and industry pushback highlight the tension between public will and government control.

Summary: The Great Green Tax Grab

Michigan’s vibrant, multi-billion dollar cannabis market, born from the will of the people, is facing a major crisis. Just years after voters approved the Michigan Regulation and Taxation of Marihuana Act (MRTMA) in 2018, state lawmakers are being accused of attempting an end-run around the Constitution.

The flashpoint is the new 24% wholesale excise tax, hastily introduced in late 2025, which, when stacked atop existing taxes, pushes Michigan toward becoming one of the most heavily taxed cannabis states in the nation.

The industry is crying foul, arguing this massive tax hike illegally amends the voter-initiated law and threatens to crash the legal market, driving consumers and revenue back to the illicit economy. Legal challenges are now underway, placing the fate of Michigan’s cannabis experiment in the hands of the courts.

Background and Chronological Timeline: From Referendum to “Road” Tax.

The current controversy is rooted in the unique status of the MRTMA, a law enacted directly by Michigan citizens, which affords it special constitutional protection against legislative meddling.

Specifically, the Michigan Constitution requires that any subsequent amendment to a voter-initiated law must be passed by a three-fourths supermajority in both legislative chambers.

What’s at Stake: Law, Taxes, and the Market’s Future

The current legal and legislative battle centers on three critical concepts: voter supremacy, punitive taxation, and market stability.

Lawmakers vs. Law-Makers (The Voters)

The key legal hurdle for the state is the constitutional protection afforded to the MRTMA. Since the new tax bill—the Comprehensive Road Funding Tax Act—did not garner the necessary three-fourths supermajority, its legality rests entirely on the argument that it is a new tax and not an amendment to the original 2018 law.

• The Industry’s Stance: Opponents argue the wholesale tax fundamentally changes the commercial taxation structure established by the voters (a 10% retail excise tax). By imposing a new, massive tax burden on the supply chain, the Legislature is frustrating the very purpose of the MRTMA—to replace the illicit market with a legal, regulated, and reasonably priced one. This frustration, they contend, constitutes an illegal, indirect amendment, usurping the power of the electorate.

• The State’s Stance: State attorneys contend the tax is imposed under the Legislature’s general authority to levy taxes. They claim the MRTMA only created a targeted retail tax and did not prohibit the application of other taxes.

The Problem of Over-Taxing

Which some “people” can never figure out doesn’t work toward growth.

When the new 24% wholesale excise tax takes effect, it stacks on top of the existing 10% retail excise tax and the standard 6% sales tax. The combined effective tax rate on cannabis transactions would surge to approximately 40%, making Michigan’s marijuana among the most heavily taxed in the country.

Pros and Cons of the Tax Hike

Summary

The fight over Michigan’s cannabis tax is a high-stakes constitutional showdown. It pits the immediate need for infrastructure funding against the fundamental principle of direct democracy and the long-term health of a legitimate, multi-billion dollar industry.

If the courts uphold the new wholesale tax, the financial stability of licensed cannabis businesses will be severely jeopardized, and the state risks undermining the success of its own legalization effort by creating an uncompetitive legal market. The outcome will set a critical precedent for the balance of power between Michigan’s Legislature and its citizens.

Here are some interesting law links and articles

• MRTMA – Initiated Law 1 of 2018 (Michigan Legislature)
• Michigan Medical Marijuana – MMMA
• Marijuana Money Grab – Oops I Mean Tax Hike Passed

• Against the Voters Will for MRTMA – House Bill 5105 and 5107

• Notice to taxpayers regarding the michigan regulation and taxation of marihuana act 2019
• Michigan Cannabis Taxation Guide – LegalClarity
• Michigan Supreme Court – People v. Armstrong Opinion
• Michigan Public – Marijuana smell not enough for search
• Bridge Michigan – Marijuana tax lawsuit coverage
• Marijuana Herald – AG defends wholesale tax
• MLive – Marijuana tax concerns
• Michigan Bar Journal – Criminal Law Issues After MRTMA
• Michigan Supreme Court – Pinebrook Warren LLC v. City of Warren

• MRTMA overview and text: Michigan Legislature and summaries
• Michigan cannabis law history and context
• People v. Thue (medical marijuana on probation)
• People v. Armstrong (odor not probable cause)
• Municipal licensing litigation (Pinebrook Warren)
• CRA proposed rule changes (R 420 series)
• Wholesale tax reporting and legal challenges
• Market crowding and regulatory proposals
• Illegal operations and enforcement tightening

Established in 1993, Komorn Law  has decades of experience navigating the complexities of Michigan’s cannabis landscape, from the early days of medical marijuana (MMMA) to the regulatory challenges and constitutional fights of the current adult-use market (MRTMA).

As Michigan’s cannabis community confronts aggressive tax hikes, legislative attempts to rewrite the people’s laws, and ongoing criminal charges stemming from the state’s Public Health Code, the need for experienced legal counsel is paramount. Komorn Law has the expertise and deep institutional knowledge to fight your case in a court of law, from the district to federal court systems, challenging not only individual charges but also the regulatory schemes and constitutional infringements that threaten the industry and individual rights. When you’re ready to hire a lawyer who hates to lose, call our office  248-357-2550.