Last verified: March 2026

Michigan's cannabis tax landscape changed dramatically on January 1, 2026, when a new 24% wholesale excise tax took effect. What was once one of the lowest-taxed cannabis markets in the nation — approximately 16% combined — is now one of the highest at approximately 40% for recreational purchases. The tax has sparked a constitutional challenge, a bipartisan repeal effort, and deep concern across the industry.

Current Tax Structure (Since January 2026)

Michigan recreational cannabis is now subject to three layers of tax. Medical cannabis remains largely exempt:

The ~40% effective rate for recreational purchases is an estimate. The 24% wholesale tax is assessed on the wholesale transaction and passed through to consumers via higher retail prices, so the exact consumer impact varies by product and markup.

Before 2026: One of the Lowest Tax Rates

From the launch of recreational sales in December 2019 through the end of 2025, Michigan's cannabis tax structure was straightforward and relatively light:

• 10% MRTMA excise tax on retail sales (established by Proposal 1)
• 6% Michigan sales tax (standard rate applied to most goods)
• 16% combined — one of the lowest cannabis tax rates in the nation

This low tax rate was a deliberate design choice by the authors of Proposal 1, intended to make legal cannabis price-competitive with the illicit market. It contributed to Michigan's explosive sales growth and helped establish the state as the #2 cannabis market nationally.

The 24% Wholesale Tax (HB 4951)

On October 7, 2025, Governor Whitmer signed HB 4951, imposing a 24% excise tax on wholesale cannabis transactions effective January 1, 2026. The tax was part of a larger $1.8 billion infrastructure funding package.

Key Details

• Originally proposed at 32% before being reduced to 24% during negotiations
• Rushed through the legislature without a public hearing, according to industry critics
• Medical cannabis is exempt from the wholesale tax
• Revenue goes to the Neighborhood Road Fund for local roads and bridge repair
• Projected to generate $420 million per year for road infrastructure

Industry Impact

The wholesale tax has had immediate effects on an industry already struggling with oversupply and collapsing prices:

• Combined tax burden rose from ~16% to ~40% overnight
• Businesses unable to absorb or pass through the full cost face closure
• January 2026 sales of $226.8 million marked the largest New Year's Eve decline on record
• Industry leaders warn the tax will push consumers back to the $2 billion+ illicit market

The Constitutional Challenge

The Michigan Cannabis Industry Association (MiCIA) filed a lawsuit challenging HB 4951 as unconstitutional. The central argument: under Michigan law, a voter-initiated statute (which the MRTMA is, via Proposal 1) can only be amended by the legislature with a three-fourths supermajority in both chambers. MiCIA argues that HB 4951 effectively amends the MRTMA's tax structure without meeting that threshold.

• December 2025: A request for a preliminary injunction to halt the tax was denied
• The case continues through the courts as of March 2026
• If MiCIA prevails, the wholesale tax could be struck down entirely

SB 810: The Bipartisan Repeal Effort

In February 2026, SB 810 was introduced with bipartisan support from 8 Michigan senators to repeal the 24% wholesale tax entirely. The bill reflects growing concern from both parties that the tax is counterproductive — harming the legal industry while failing to meaningfully reduce the illicit market. See Recent Legislation for the latest status.

Where the Money Goes

Cannabis tax revenue in Michigan is distributed across multiple funds:

MRTMA 10% Excise Tax Distribution

• 35% — School Aid Fund for K-12 education
• 35% — Michigan Transportation Fund for roads and infrastructure
• 15% — Municipalities with licensed cannabis retailers, distributed proportionally by number of establishments
• 15% — Counties with licensed cannabis retailers, distributed proportionally by number of establishments

In FY2024, the CRA distributed $331 million in MRTMA excise tax revenue. Municipalities received an average of approximately $58,229 per cannabis establishment in their jurisdiction.

24% Wholesale Tax Revenue

All revenue from the wholesale tax goes to the Neighborhood Road Fund, dedicated to local road and bridge repair. The tax is projected to generate approximately $420 million per year.

The Medical Tax Advantage

Medical cannabis patients now enjoy a significant tax advantage over recreational consumers. Medical purchases are exempt from both the 10% MRTMA excise tax and the 24% wholesale tax, subject only to the standard 6% sales tax. With the combined recreational rate at approximately 40%, medical patients effectively save about 34% on every purchase.

This gap has made the medical card more financially valuable than ever, potentially reversing the decline in medical registrations that Michigan has seen as recreational access expanded.

How Michigan Compares

Michigan's post-2026 tax rate places it among the highest-taxed cannabis markets in the country:

• Michigan (pre-2026): ~16% combined — one of the lowest
• Michigan (2026): ~40% combined — among the highest
• Illinois: 25–40%+ depending on THC content
• Washington: 37% excise + sales tax
• Colorado: ~29% combined
• Oregon: 17% state + up to 3% local

HB 4951, signed October 7, 2025, imposed a 24% wholesale excise tax on cannabis effective January 1, 2026. Revenue is directed to the Neighborhood Road Fund for local road and bridge repair as part of a $1.8 billion infrastructure package.

Michigan Legislature — HB 4951