Michigan Lawmakers Pass 24% Cannabis Wholesale Tax, Dealing Blow to Industry

Lawmakers have passed a 24% Michigan cannabis wholesale tax as part of the state’s 2026 budget deal, setting the stage for one of the steepest tax increases on marijuana in the country. Supporters say the revenue will fund critical road repairs, while critics warn it could devastate one of the nation’s strongest legal cannabis markets.

Key Takeaways

• Michigan Senate approved House Bill 4951 on Oct. 3 in a 19-17 vote.
• The law adds a 24% wholesale cannabis tax starting January 1, 2026.
• Combined with existing taxes, total levies on cannabis could exceed 40%.
• Critics warn the move will shrink the legal market and benefit the illicit market.
• Gov. Gretchen Whitmer is expected to sign the measure into law.

Details of the Michigan Cannabis Wholesale Tax

House Bill 4951, known as the “Comprehensive Road Funding Tax Act,” imposes a 24% excise tax on wholesale cannabis transactions beginning in 2026. The bill passed the House in late September and cleared the Senate by a narrow margin.

Revenue from the tax, projected at more than $420 million annually, will fund the state’s Comprehensive Road Funding Fund. Gov. Gretchen Whitmer, who campaigned on fixing Michigan’s roads, called the bill a long-term investment in infrastructure and jobs.

However, the new tax comes on top of Michigan’s existing 10% excise tax at retail and the 6% sales tax, meaning cannabis purchases could soon face some of the highest effective tax rates in the country.

Industry Concerns and Opposition

Michigan currently boasts some of the lowest cannabis prices in the nation, with an average ounce selling for just over $80 in 2024. Critics say adding a 24% wholesale tax could wipe out those gains.

Sen. Jeff Irwin (D–Ann Arbor) argued that the law would undercut Michigan’s legal industry and hand business to unregulated sellers.

Cannabis businesses also worry about job losses. Michigan’s legal market has created an estimated 40,000 jobs since voters approved legalization in 2018. Industry stakeholders warn the new tax could reverse that momentum.

Supporters of the Tax

Supporters, including Sen. Edward McBroom (R–Waucedah Township), argue the tax is needed to “right-size” Michigan’s cannabis market, which he described as oversaturated and harmful to border communities.

In Michigan’s Upper Peninsula, McBroom said residents face rising crime from cross-border traffic with Wisconsin, where cannabis remains illegal. He suggested the new tax could help curb growth while funding vital infrastructure.

Michigan’s Market in Context

According to the state Cannabis Regulatory Agency, Michigan’s cannabis industry generated $3.3 billion in legal sales in 2024, making it the second-largest market in the country after California. The state’s sales per capita nearly tripled California’s, highlighting the strength of Michigan’s system under relatively low taxes.

By comparison, California’s heavily taxed system saw only 38% of total cannabis consumption come from licensed stores in 2024, according to state reports. Critics argue Michigan risks following the same path if taxes climb too high.

What Happens Next

Gov. Whitmer is expected to sign the legislation into law, locking in the tax increase for 2026. The state will allocate a portion of revenues to a new Comprehensive Road Funding Fund, with significant funding dedicated to bridges and local roads.

Still, opponents question whether the projected $420 million will materialize. Sen. Jonathan Lindsey (R–Allen) warned that high taxes could shrink the legal market to the point where the state collects “24% of nothing.”

Conclusion

The passage of the 24% Michigan cannabis wholesale tax marks a turning point for one of the nation’s most successful legal marijuana markets. While supporters frame the tax as a win for roads and infrastructure, critics warn it could unravel years of progress by pushing consumers back to unregulated sales. How the industry weathers the tax, and whether revenues meet expectations, will be closely watched both in Michigan and beyond.