California Proposition 64 Reform: History, Impact & Future Changes

Executive Summary

California's Proposition 64, the Adult Use of Marijuana Act (AUMA) passed by voters in November 2016, established the nation's largest legal cannabis market but has faced mounting criticism over regulatory complexity, tax burdens, and persistent illicit competition. As of July 2026, California State Treasurer Fiona Ma publicly declared the decade-old legalization framework a "complete failure" and called for a replacement ballot initiative, marking the most significant political challenge to the state's cannabis regime since its inception. The law legalized adult-use cannabis for Californians 21 and older, created a dual-licensing system overseen by multiple state agencies, imposed cultivation and excise taxes, and granted local governments authority to ban commercial activity. While Prop 64 generated over $4.4 billion in tax revenue through 2025, licensed operators face effective tax rates exceeding 30 percent, wholesale prices have collapsed to $300-500 per pound in some regions, and the illicit market continues to command an estimated 50-60 percent of total sales. The debate over reform now centers on tax restructuring, regulatory streamlining, and whether incremental legislative fixes can salvage the framework or whether voters must approve a comprehensive replacement measure.

Why This Matters

California's cannabis policy reverberations extend far beyond state borders, affecting 40 million residents, thousands of licensed businesses, federal scheduling debates, and reform efforts in dozens of other states. The state's legal market generated $5.3 billion in retail sales during 2025, supporting approximately 75,000 direct jobs and thousands more in ancillary services. Licensed cultivators, manufacturers, distributors, testing laboratories, and retailers have invested over $8 billion in infrastructure, equipment, and compliance systems since 2018. Medical patients, who numbered approximately 400,000 active participants in California's medical program as of 2025, rely on legal access for conditions ranging from chronic pain to epilepsy to cancer treatment side effects.

Multi-state operators including Curaleaf, Green Thumb Industries, Cresco Labs, and Verano Holdings maintain significant California footprints, with the state representing 15-25 percent of revenue for major public companies. Investment decisions, capital allocation, and merger activity across the North American cannabis sector hinge partly on California's regulatory trajectory. The state's struggles with taxation and illicit competition have informed policy debates in New York, New Jersey, Connecticut, and other states implementing adult-use programs.

At the federal level, California's experience features prominently in Congressional testimony regarding the SAFER Banking Act, rescheduling proceedings before the Drug Enforcement Administration, and debates over Internal Revenue Code Section 280E tax treatment. The state's challenges provide ammunition both to legalization advocates seeking federal reform and to opponents warning of implementation pitfalls. For cultivators in Humboldt County, Mendocino County, and the Emerald Triangle, the policy framework determines whether multi-generational farming operations survive or face foreclosure. For social equity applicants in Los Angeles, Oakland, and San Francisco, regulatory costs and capital access barriers determine whether restorative justice goals materialize or remain aspirational.

Background and History: From Compassionate Use to Adult Legalization

California's journey to adult-use legalization spans three decades of incremental reform, beginning with the nation's first medical cannabis law and culminating in the 2016 ballot measure that created the world's largest legal market.

Proposition 215 and Medical Cannabis Foundations (1996-2015)

California voters approved Proposition 215, the Compassionate Use Act, on November 5, 1996, with 55.6 percent support. The initiative, codified as California Health and Safety Code Section 11362.5, exempted patients and primary caregivers from criminal prosecution for possession and cultivation when recommended by a physician for treatment of AIDS, cancer, chronic pain, and other conditions. The law provided no regulatory framework, creating a two-decade period of quasi-legal medical access through dispensaries operating under varying interpretations of state and local law.

Senate Bill 420, enacted in 2003, established a voluntary state identification card program and specified that qualified patients could possess up to eight ounces of dried cannabis and maintain six mature or 12 immature plants. The law created California's first regulatory structure, though enforcement remained inconsistent. By 2015, an estimated 1,000-2,000 dispensaries operated statewide, concentrated in Los Angeles, San Francisco, Oakland, and San Diego, with minimal state oversight and widely varying local regulations.

The Medical Cannabis Regulation and Safety Act (MCRSA), signed by Governor Jerry Brown in October 2015, established comprehensive licensing and regulation for the first time. The framework divided oversight among the Bureau of Cannabis Control (retail), Department of Food and Agriculture (cultivation), and Department of Public Health (manufacturing), creating the tri-agency structure that would later govern adult use.

Proposition 64 Campaign and Passage (2016)

The Adult Use of Marijuana Act qualified for the November 8, 2016 ballot after the Coalition for Responsible Drug Policies submitted over 600,000 signatures. Lieutenant Governor Gavin Newsom chaired the campaign, with major funding from Sean Parker's Fund for Policy Reform, which contributed $9.6 million, and the Drug Policy Alliance, which provided $6.5 million. The California Medical Association, California Democratic Party, and NAACP endorsed the measure. Opposition came from the California Republican Party, some law enforcement organizations, and portions of the medical cannabis industry concerned about regulatory costs.

Voters approved Prop 64 with 57.1 percent support, carrying 48 of 58 counties. The measure received strongest support in coastal urban counties: San Francisco (71.5 percent), Alameda (72.8 percent), and Marin (76.2 percent). Rural counties showed more divided results, with Shasta (44.3 percent), Tehama (39.1 percent), and Sutter (38.7 percent) voting against.

The initiative legalized possession of up to one ounce of cannabis flower and eight grams of concentrate for adults 21 and older, effective November 9, 2016. It authorized home cultivation of up to six plants per residence, banned consumption in public spaces and while driving, and prohibited sales to minors with enhanced penalties. The measure imposed a 15 percent excise tax on retail sales and cultivation taxes of $9.65 per ounce for flower and $2.87 per ounce for leaves, with rates indexed to inflation.

Implementation and Regulatory Buildout (2017-2018)

The Bureau of Cannabis Control began accepting license applications on January 1, 2018, the statutory deadline for commercial sales to commence. The Department of Food and Agriculture issued cultivation licenses, the Department of Public Health (later transferred to the Department of Cannabis Control) handled manufacturing, and the Bureau managed retail, distribution, testing, and microbusiness licenses. Emergency regulations took effect in November 2017, with permanent regulations undergoing multiple revisions through 2019.

California simultaneously implemented the Medicinal and Adult-Use Cannabis Regulation and Safety Act (MAUCRSA), signed in June 2017, which merged medical and adult-use regulatory frameworks. The consolidation created a unified licensing system while maintaining separate medical and adult-use product tracking through the state's track-and-trace system, Metrc, which launched statewide in January 2018.

Early implementation faced significant challenges. Many jurisdictions maintained local bans: as of January 2018, approximately 75 percent of California cities prohibited commercial cannabis activity, forcing operators into unincorporated county areas or the limited municipalities allowing licensing. Testing requirements revealed widespread pesticide contamination, leading to product recalls and supply shortages during the first six months. Wholesale prices for outdoor flower dropped from $1,200-1,400 per pound in late 2017 to $800-1,000 by summer 2018 as licensed supply increased.

Tax Adjustments and Reform Efforts (2019-2022)

Facing industry pressure over tax burdens, Governor Gavin Newsom signed Assembly Bill 286 in July 2019, temporarily reducing the cultivation tax to zero for three years beginning July 1, 2022. The legislation responded to cultivator complaints that the per-ounce tax, which had risen to $10.08 for flower by 2022 due to inflation adjustments, created competitive disadvantages against untaxed illicit product.

Assembly Bill 195, enacted in July 2021, restructured the cultivation tax from a per-ounce to a per-pound basis and delayed implementation of certain testing requirements. Senate Bill 59, passed in October 2021, extended provisional licenses and provided regulatory relief for small cultivators. These incremental reforms failed to address underlying structural issues: the 15 percent excise tax remained unchanged, local taxes in some jurisdictions added 5-10 percent, and federal 280E tax treatment denied ordinary business deductions for cannabis operators.

By 2022, California's licensed market reached approximately 1,100 retailers, 850 distributors, 600 manufacturers, 300 testing labs, and 8,500 cultivation licenses (including many small outdoor farms). Total retail sales peaked at $5.4 billion in 2021 before declining slightly to $5.1 billion in 2022 as economic headwinds and continued illicit competition constrained growth.

Consolidation and Crisis (2023-2026)

The Department of Cannabis Control, created in July 2021 by consolidating the three legacy agencies, implemented further regulatory streamlining in 2023. The agency reduced license types from 40 to 24, simplified renewal processes, and launched a provisional-to-annual license conversion initiative. Despite these efforts, market conditions deteriorated for many operators.

Wholesale prices for greenhouse flower fell to $400-600 per pound by mid-2024, down from $1,000-1,200 in 2020. Outdoor flower prices collapsed to $200-400 per pound in some regions, below the cost of production for many small farms. Concentrate prices similarly declined, with distillate wholesale rates dropping from $8-12 per gram in 2020 to $3-5 per gram by 2025. Licensed cultivators in Humboldt County, Mendocino County, and Lake County faced foreclosures, with an estimated 30-40 percent of Emerald Triangle farms ceasing operations between 2021 and 2025.

Retail consolidation accelerated as multi-state operators acquired struggling independent dispensaries. Curaleaf expanded to 28 California locations by 2025, while Green Thumb Industries operated 18 stores under the RISE brand. Social equity programs in Los Angeles, Oakland, San Francisco, and Sacramento struggled with high failure rates: approximately 60 percent of social equity licensees in Los Angeles closed within three years of opening, according to city data released in 2024.

State Treasurer Fiona Ma's July 30, 2026 statement calling Prop 64 a "complete failure" crystallized growing political momentum for comprehensive reform. Ma cited the persistent illicit market, regulatory complexity, and tax burden as core failures requiring a new ballot initiative rather than legislative fixes.

Key Players

Department of Cannabis Control

The Department of Cannabis Control, established in July 2021, serves as California's unified cannabis regulatory authority. Director Nicole Elliott, appointed in 2021, oversees licensing, enforcement, track-and-trace systems, and regulatory development. The agency manages approximately 12,000 active licenses as of 2026, conducts compliance inspections, and coordinates with local jurisdictions. The DCC's budget for fiscal year 2025-2026 totaled $186 million, funded through licensing fees and regulatory assessments. The agency has faced criticism for slow license processing, inconsistent enforcement against unlicensed operators, and regulatory complexity that imposes disproportionate costs on small businesses.

State Treasurer Fiona Ma

State Treasurer Fiona Ma, elected in 2018 and re-elected in 2022, emerged as a prominent voice for cannabis banking access and regulatory reform. Ma convened the Cannabis Banking Working Group in 2019, bringing together financial institutions, regulators, and industry stakeholders to address barriers to banking services. Her July 2026 statement calling for a replacement ballot initiative marked a significant escalation in reform rhetoric from a statewide elected official. Ma cited the need for tax restructuring, simplified licensing, and enhanced enforcement against illicit operators as priorities for any replacement measure.

California Cannabis Industry Association

The California Cannabis Industry Association, the state's largest trade group representing over 500 licensed businesses, has advocated for tax reform, regulatory streamlining, and illicit market enforcement since 2017. Executive Director Lindsay Robinson has testified before legislative committees on tax burden issues and coordinated industry positions on regulatory proposals. The association supported elimination of the cultivation tax, reduction of the excise tax to 10 percent, and increased funding for enforcement against unlicensed operators. CCIA has not yet taken a formal position on whether legislative reform or a new ballot initiative represents the optimal path forward.

United Cannabis Business Association

The United Cannabis Business Association, representing small and independent operators, has pushed for more aggressive reform than larger trade groups. The organization advocated for a temporary tax holiday, expedited social equity licensing, and local control reforms to reduce municipal bans. UCBA has criticized multi-state operator consolidation and called for policies supporting independent retailers and craft cultivators.

Law Enforcement and Opposition Groups

The California Police Chiefs Association and California District Attorneys Association opposed Prop 64 in 2016 and have continued to raise concerns about impaired driving, youth access, and environmental impacts of cultivation. These organizations have called for enhanced enforcement funding, stricter advertising restrictions, and lower potency limits. The California Chamber of Commerce has raised workplace safety concerns and advocated for employer rights to maintain drug-free workplace policies. These groups would likely oppose any replacement initiative that further liberalizes access or reduces regulatory oversight.

Legal and Regulatory Framework

California's cannabis legal structure rests on constitutional provisions enacted by Prop 64, statutory implementation through the Business and Professions Code, and extensive regulatory detail in Title 16 of the California Code of Regulations.

Proposition 64 added Article 20, Section 32, to the California Constitution, establishing that the measure could only be amended by a two-thirds vote of the Legislature or by voter initiative. This supermajority requirement has constrained legislative reform efforts, as tax restructuring proposals have struggled to achieve the necessary votes. The constitutional provision protects core elements including legalization for adults 21 and older, the six-plant home cultivation limit, and the basic tax structure.

The Business and Professions Code Division 10, Sections 26000-26231, codifies the licensing framework. Section 26011.5 establishes license types including Type 1 through Type 5 cultivation licenses (differentiated by canopy size and lighting), manufacturing licenses (volatile and non-volatile extraction), distribution, testing, retail (storefront and non-storefront), and microbusiness. Section 26070 requires track-and-trace participation for all commercial licensees, with Metrc serving as the contracted system. Section 26200 establishes penalty structures for unlicensed activity, including misdemeanor charges for unlicensed sales and felony charges for large-scale unlicensed cultivation.

California Revenue and Taxation Code Section 34011 imposes the 15 percent cannabis excise tax on retail sales, calculated on the gross receipts of retail sales. Section 34012 established the cultivation tax, which was suspended from July 1, 2022 through June 30, 2025, and then permanently eliminated by Assembly Bill 195. The California Cannabis Tax Fund, established by Section 34019, allocates revenue to regulatory costs, research, youth education, environmental restoration, and public health programs. Through fiscal year 2024-2025, the fund distributed approximately $1.2 billion to these programs.

Title 16, Division 42 of the California Code of Regulations contains detailed operational requirements. Section 5300 et seq. governs retail operations, including security requirements, product display restrictions, and age verification procedures. Section 5700 et seq. establishes testing standards, requiring analysis for potency, pesticides, heavy metals, microbial contaminants, and residual solvents. Section 8100 et seq. governs cultivation, including water use reporting, pesticide restrictions, and waste disposal requirements.

The California Environmental Quality Act (CEQA), Public Resources Code Section 21000 et seq., applies to local cannabis licensing decisions, requiring environmental review for discretionary permits. This has created delays and costs for applicants in jurisdictions requiring full environmental impact reports. Some jurisdictions have adopted categorical exemptions or streamlined review processes to reduce CEQA burdens.

Federal law remains a critical overlay. Cannabis remains a Schedule I controlled substance under the Controlled Substances Act, 21 U.S.C. § 812, creating ongoing conflicts with state legalization. The Rohrabacher-Farr Amendment (now the Rohrabacher-Blumenauer Amendment), enacted annually in federal appropriations bills since 2014, prohibits the Department of Justice from using funds to interfere with state medical cannabis programs. No equivalent protection exists for adult-use programs, though federal enforcement against state-compliant operators has been rare since 2013 under the Cole Memorandum framework (rescinded in 2018 but largely maintained in practice).

Internal Revenue Code Section 280E prohibits businesses trafficking in Schedule I or II substances from deducting ordinary business expenses, creating effective federal tax rates of 60-80 percent for cannabis operators. This federal tax treatment, combined with California's state taxes and local levies, creates the cumulative burden driving reform demands.

State-by-State Context: California in the National Landscape

California's adult-use program operates within a national context of 24 states plus Washington D.C. and Guam with legal recreational cannabis as of 2026, each with distinct regulatory approaches and tax structures.

California

California maintains a 15 percent excise tax with no cultivation tax as of 2026. The state allows local jurisdictions to impose additional taxes, with rates ranging from zero to 10 percent depending on municipality. Possession limit: one ounce flower, eight grams concentrate. Home cultivation: six plants per residence. Licensed operators: approximately 12,000 active licenses. Estimated legal market size: $5.3 billion (2025). Estimated illicit market share: 50-60 percent. Key challenge: regulatory complexity and cumulative tax burden exceeding 30 percent in many jurisdictions.

Colorado

Colorado, which launched adult-use sales in January 2014, imposes a 15 percent excise tax on wholesale transfers and a 15 percent retail sales tax, for a combined state rate of approximately 27.9 percent. Local jurisdictions add 0-5 percent. Possession limit: one ounce flower. Home cultivation: six plants per person, 12 per household. The state generated $423 million in cannabis tax revenue in fiscal year 2024-2025. Colorado's mature market provides a comparison point: after initial rapid growth, sales have plateaued at approximately $1.3 billion annually since 2021, with per-capita consumption stabilizing.

Washington

Washington state imposes a 37 percent excise tax on retail sales, the highest state-level rate in the nation. The state prohibits home cultivation for non-medical users. Possession limit: one ounce flower. Washington generated $559 million in cannabis tax revenue in fiscal year 2024-2025. The high tax rate has been cited as supporting a persistent illicit market, though enforcement efforts have been more aggressive than in California. Washington's experience demonstrates the trade-offs between revenue maximization and illicit market suppression.

Michigan

Michigan imposes a 10 percent excise tax on retail sales, among the lowest state rates. Local jurisdictions may add up to 3 percent. Possession limit: 2.5 ounces flower. Home cultivation: 12 plants per person. Michigan's lower tax burden has contributed to rapid market growth, with retail sales reaching $2.8 billion in 2025, making it the third-largest state market after California and Colorado. The state's experience suggests that lower taxes can drive legal market capture, though Michigan also benefits from proximity to prohibition states including Wisconsin and Indiana.

New York

New York launched adult-use sales in December 2022 under the Marijuana Regulation and Taxation Act. The state imposes a 13 percent excise tax plus a potency-based tax of $0.005 per milligram THC for flower and $0.008 per milligram for concentrates. Possession limit: three ounces flower. Home cultivation: prohibited (expected to be allowed in 2026). New York's implementation has been slower than California's, with approximately 150 licensed retailers operating as of mid-2026. The state's experience with social equity licensing—prioritizing applicants with prior cannabis convictions—has faced similar challenges to California's programs, including high capital requirements and limited access to banking.

Market and Business Implications

California's regulatory trajectory directly impacts capital allocation decisions, merger and acquisition activity, and operational strategies for multi-state operators and ancillary service providers across North America.

Public cannabis companies with significant California exposure include Curaleaf Holdings, which derived approximately $180 million (14 percent of total revenue) from California operations in fiscal year 2025, Green Thumb Industries with $210 million (16 percent), and Cresco Labs with $165 million (13 percent). These operators have reduced California capital expenditures since 2023, redirecting investment to higher-margin markets including New Jersey, Illinois, and Ohio. Curaleaf closed three California dispensaries in 2024-2025, consolidating to higher-volume locations. Green Thumb paused new California store openings in 2025, focusing instead on New York and Pennsylvania expansion.

Wholesale pricing dynamics have created severe margin compression for cultivators. Indoor flower production costs range from $800-1,200 per pound when accounting for facility overhead, labor, utilities, and compliance. With wholesale prices at $600-900 per pound for premium indoor flower as of mid-2026, many indoor operators face negative gross margins. Greenhouse operators with production costs of $400-600 per pound maintain thin margins at current wholesale prices of $500-700 per pound. Outdoor cultivators, with production costs of $200-400 per pound, can remain profitable at current prices of $300-500 per pound, but only at significant scale.

The pricing collapse has driven consolidation among cultivation operations. Large-scale operators including Glass House Brands, which operates a 5.5 million square foot greenhouse facility in Ventura County, have gained market share through economies of scale. Glass House reported production costs below $300 per pound in 2025, enabling profitability despite wholesale price declines. Small cultivators with canopies under 10,000 square feet have faced the highest failure rates, with an estimated 40 percent exiting the market between 2022 and 2025.

Retail margins have also compressed. Gross margins for dispensaries averaged 45-50 percent in 2019-2020 but declined to 35-40 percent by 2025 as wholesale prices fell and competition intensified. Retailers in high-rent urban locations face particular pressure: a dispensary in San Francisco or Los Angeles may pay $30,000-60,000 monthly in rent, $15,000-25,000 in labor costs, and $8,000-12,000 in security and compliance costs, requiring monthly revenue of $300,000-500,000 to achieve breakeven.

The cumulative tax burden remains the most significant financial challenge. A typical retail transaction in Los Angeles faces: 15 percent state excise tax, 9.5 percent Los Angeles sales tax, and 10 percent local cannabis tax, for a total tax burden of 34.5 percent. When combined with federal 280E treatment that disallows deductions for rent, labor, and other operating expenses, effective tax rates can exceed 70 percent of gross profit. This compares to effective tax rates of 25-35 percent for alcohol retailers and 15-25 percent for tobacco retailers.

Banking access remains constrained despite state-level legalization. Approximately 600 financial institutions nationwide provide services to cannabis businesses as of 2026, up from 400 in 2020, but most major banks remain unwilling to accept cannabis clients due to federal illegality and regulatory risk. Cannabis operators pay premium fees for banking services: $2,000-5,000 monthly for basic checking accounts, 2-4 percent of deposits for cash handling, and 1-2 percent above prime for loans from the limited specialty lenders serving the sector. The SAFER Banking Act, which would provide safe harbor for financial institutions serving state-legal cannabis businesses, passed the House of Representatives in 2024 but has not advanced in the Senate as of mid-2026.

Insurance costs add further burden. General liability insurance for cannabis retailers costs $15,000-30,000 annually, 3-5 times the rate for comparable retail businesses. Product liability insurance for manufacturers costs $25,000-50,000 annually. Property insurance for cultivation facilities costs 2-3 times standard commercial rates due to fire risk and federal illegality concerns.

Ancillary service providers including point-of-sale software companies, compliance consultants, testing laboratories, and packaging manufacturers have built substantial businesses serving California's market. Dutchie, a point-of-sale and e-commerce platform, serves over 400 California dispensaries. SC Labs, Steep Hill, and CannaSafe operate testing laboratories processing thousands of samples monthly. These businesses face less direct regulatory risk than plant-touching operators but remain exposed to market volatility and policy changes.

What Experts Say

Policy analysts, industry leaders, and economists have offered divergent assessments of Prop 64's performance and the optimal path for reform.

Dale Gieringer, director of California NORML and a longtime cannabis reform advocate, has characterized the implementation as a "regulatory overreach" that imposed excessive costs on licensed operators while failing to dismantle the illicit market. According to Gieringer, the fundamental error was attempting to create a "boutique regulatory system" rather than treating cannabis like alcohol with simpler rules and lower taxes. He has advocated for reducing the excise tax to 5-7 percent, eliminating most testing requirements beyond potency and basic safety, and allowing direct-to-consumer sales from cultivators.

Hirsh Jain, a cannabis attorney and policy consultant who worked on Prop 64 implementation, has defended the regulatory structure as necessary to ensure product safety and prevent youth access, while acknowledging that tax levels were set too high. According to Jain, the solution lies in incremental legislative reforms rather than a new ballot initiative, which could take years to develop and implement. He has proposed reducing the excise tax to 10 percent, increasing enforcement funding by $100 million annually, and providing grants to social equity operators.

Beau Kilmer, co-director of the RAND Drug Policy Research Center, has analyzed California's outcomes in comparison to other state markets. According to RAND research published in 2025, California's illicit market share of 50-60 percent significantly exceeds Colorado's estimated 30-40 percent and Washington's 25-35 percent. Kilmer has attributed the difference primarily to tax levels and enforcement intensity, noting that California's per-capita spending on cannabis enforcement is approximately one-third that of Washington state. He has recommended that any reform package include both tax reduction and substantially increased enforcement funding.

Kris Krane, president of 4Front Ventures and a multi-state operator executive, has described California's market as "structurally unprofitable" for many operators due to the combination of taxes, regulatory costs, and illicit competition. According to Krane, the state's approach of allowing local bans while imposing state-level taxes and regulations created the worst possible outcome: limited legal access points combined with high costs for those that do operate. He has advocated for state preemption of local bans, similar to Oregon's approach, to ensure statewide access to legal products.

Amber Senter, executive director of Supernova Women and a social equity advocate, has focused on the failure of equity programs to deliver meaningful ownership opportunities for communities impacted by prohibition. According to Senter, high regulatory costs and limited access to capital have created a system where social equity licensees often become fronts for well-capitalized partners or fail entirely. She has called for grants rather than loans for equity operators, technical assistance programs, and set-asides in licensing to ensure meaningful participation.

What's Next

The trajectory of California cannabis reform will be determined by a combination of legislative action in 2027, potential ballot initiative campaigns for 2028, and ongoing regulatory adjustments by the Department of Cannabis Control.

State Treasurer Ma's call for a replacement ballot initiative has not yet been accompanied by specific legislative language or a formal campaign committee. For a measure to appear on the November 2028 ballot, proponents would need to submit initiative language to the Attorney General by spring 2027 to allow time for title and summary preparation, signature gathering (requiring approximately 900,000 valid signatures based on current registration), and qualification. Major funding would be required: the Prop 64 campaign spent approximately $25 million, and a 2028 campaign would likely require $30-40 million given increased costs and potential opposition.

Legislative reform efforts will continue in the 2027 session. Assembly Member Reggie Jones-Sawyer, chair of the Assembly Public Safety Committee, has indicated plans to introduce legislation reducing the excise tax to 10 percent and increasing enforcement funding. Senate President Pro Tem Mike McGuire has expressed support for regulatory streamlining but has not committed to specific tax reduction proposals. Any tax reduction would require identifying replacement revenue or accepting reduced funding for programs currently supported by cannabis taxes, including drug treatment, youth education, and environmental restoration.

The Department of Cannabis Control is developing revised regulations for release in late 2026 or early 2027, focusing on reducing compliance costs for small operators, streamlining testing requirements, and improving track-and-trace system functionality. Director Nicole Elliott has indicated that regulatory changes will be incremental rather than comprehensive, given the constraints of existing statutory authority.

Enforcement against unlicensed operators remains a critical variable. The Unified Cannabis Enforcement Taskforce, established in 2022 with participation from DCC, Department of Fish and Wildlife, State Water Resources Control Board, and other agencies, conducted approximately 1,800 enforcement actions in 2025, seizing over 500,000 plants and $150 million in product. Advocates have called for tripling enforcement funding to $300 million annually, but budget constraints make significant increases unlikely without new revenue sources.

Federal policy changes could dramatically alter California's landscape. The Drug Enforcement Administration's ongoing review of cannabis scheduling, initiated by President Biden's October 2022 directive, could result in rescheduling to Schedule III or descheduling entirely. Schedule III classification would eliminate 280E tax treatment, reducing effective federal tax rates by 30-40 percentage points and significantly improving operator profitability. Congressional passage of the SAFER Banking Act would expand access to financial services, reducing cash-handling costs and enabling more conventional business operations. Federal legalization would transform the market entirely, though prospects for comprehensive reform remain uncertain as of mid-2026.

Market consolidation will likely continue regardless of policy changes. Multi-state operators with access to capital markets and economies of scale maintain competitive advantages over independent operators. Analysts project that the top 10 operators could control 40-50 percent of California retail market share by 2028, up from approximately 25 percent in 2025. Vertical integration—where companies control cultivation, manufacturing, distribution, and retail—provides margin protection and supply chain security, driving further consolidation.

Further Reading

• California Proposition 64 full text (Adult Use of Marijuana Act): https://oag.ca.gov/system/files/initiatives/pdfs/15-0103%20%28Marijuana%29_1.pdf
• California Department of Cannabis Control official website and regulations: https://cannabis.ca.gov
• California Business and Professions Code Division 10 (Cannabis): https://leginfo.legislature.ca.gov/faces/codes_displayexpandedbranch.xhtml?tocCode=BPC&division=10
• California Revenue and Taxation Code Section 34011 (Cannabis Excise Tax): https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?sectionNum=34011&lawCode=RTC
• California Cannabis Tax Fund revenue reports: https://www.cdtfa.ca.gov/taxes-and-fees/cannabis-tax.htm
• RAND Corporation cannabis policy research: https://www.rand.org/topics/cannabis-policy.html
• California NORML policy positions and analysis: https://www.canorml.org
• Legislative Analyst's Office cannabis policy reports: https://lao.ca.gov
• Controlled Substances Act, 21 U.S.C. § 812 (federal scheduling): https://www.govinfo.gov/content/pkg/USCODE-2021-title21