How Cannabis Taxes Actually Compare Across States When You Standardize Them
Cannabis excise taxes average about 13% of retail price across product categories, but the wide variation between states makes apples-to-apples comparison nearly impossible without standardization.
Quick Facts
What This Study Found
Using retail scanner data from dispensary point-of-sale systems across 12 states with legal recreational cannabis (Q1 2020 to Q4 2024), researchers developed the first standardized tax metrics broken down by product category.
The standardized excise taxes were: $32.58 per ounce for flower, $180.21 per ounce for vaping products, and $0.024 per milligram of THC for edibles. Despite the very different dollar amounts, the tax incidence (ratio of tax to retail price) was remarkably similar across categories — 13.03% for flower, 13.59% for vaping, and 13.09% for edibles.
However, these averages masked enormous state-to-state variation. Standardized taxes and tax incidences varied considerably across the 12 states studied, reflecting the patchwork of tax structures that include ad valorem (percentage-based), weight-based, potency-based, and hybrid approaches applied at different points in the supply chain.
Key Numbers
12 states analyzed, Q1 2020–Q4 2024. Mean standardized excise taxes: flower $32.58/oz, vaping $180.21/oz, edibles $0.024/mg THC. Tax incidence: flower 13.03%, vaping 13.59%, edibles 13.09%. Significant variation across states in both absolute tax levels and tax incidence.
How They Did This
Observational study analyzing cannabis retail scanner data from dispensary point-of-sale systems in 12 states with legal recreational markets, covering Q1 2020 to Q4 2024. Tax structures at each supply chain stage were converted into standardized per-unit measures using retail prices. Tax incidence calculated as the ratio of standardized taxes to retail prices.
Why This Research Matters
Cannabis tax policy is a key lever for public health — higher taxes can reduce use, particularly among price-sensitive populations like young adults. But because states tax cannabis in completely different ways (by weight, by price, by THC content, or some combination), comparing tax levels across states has been nearly impossible. This standardization framework makes those comparisons possible for the first time.
The Bigger Picture
Tax policy connects directly to the public health outcomes tracked elsewhere in this database. The college student study (RTHC-00253) found that more restrictive cannabis policies were associated with lower use. The driving impairment research (RTHC-00159, RTHC-00171) raises questions about whether tax-influenced pricing affects consumption patterns. By creating a standardized measurement framework, this study enables the kind of cross-state research needed to answer whether and how cannabis taxes actually influence health behaviors.
What This Study Doesn't Tell Us
Scanner data may not capture the full market (excludes illicit sales and some smaller dispensaries). The 12 states studied may not represent all legal markets. Tax structures are evolving rapidly — several states have changed their approaches since the study period. The standardization methodology requires assumptions about how supply-chain taxes pass through to retail prices.
Questions This Raises
- ?Is there an optimal tax rate that balances revenue generation with public health goals?
- ?Do higher standardized tax rates actually reduce consumption, or do they primarily drive consumers to the illicit market?
- ?Should edibles be taxed by THC content rather than by weight or price?
Trust & Context
- Key Stat:
- Evidence Grade:
- Observational study using real dispensary sales data — strong for describing the current tax landscape but unable to establish causal effects of tax levels on behavior.
- Study Age:
- Published in 2026 with data through Q4 2024, capturing the most recent state of cannabis taxation across legal markets.
- Original Title:
- Standardizing Recreational Cannabis Excise Tax Rates in the United States: New Retail Price-Based Measurements by Product Category.
- Published In:
- International journal of environmental research and public health, 23(1) (2026) — The International Journal of Environmental Research and Public Health is a reputable journal focusing on public health research.
- Authors:
- Han, Bing(4), Cooper, Michael(5), Shang, Ce(5), Shi, Yuyan
- Database ID:
- RTHC-08313
Evidence Hierarchy
Watches what happens naturally without intervening.
What do these levels mean? →Read More on RethinkTHC
Cite This Study
https://rethinkthc.com/research/RTHC-08313APA
Han, Bing; Cooper, Michael; Shang, Ce; Shi, Yuyan. (2026). Standardizing Recreational Cannabis Excise Tax Rates in the United States: New Retail Price-Based Measurements by Product Category.. International journal of environmental research and public health, 23(1). https://doi.org/10.3390/ijerph23010114
MLA
Han, Bing, et al. "Standardizing Recreational Cannabis Excise Tax Rates in the United States: New Retail Price-Based Measurements by Product Category.." International journal of environmental research and public health, 2026. https://doi.org/10.3390/ijerph23010114
RethinkTHC
RethinkTHC Research Database. "Standardizing Recreational Cannabis Excise Tax Rates in the ..." RTHC-08313. Retrieved from https://rethinkthc.com/research/han-2026-standardizing-recreational-cannabis-excise
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.