Federal Cannabis Tax Could Generate $58 Billion Over Ten Years, Yale Analysis Finds

Cannabis prohibition has always been expensive. It costs money to enforce, prevents legal businesses from operating normally and leaves billions of dollars circulating through an underground market.

Now, a new analysis from The Budget Lab at Yale University shows what the federal government could gain by finally replacing prohibition with legalization and regulation.

According to the analysis, federal legalization combined with a cannabis excise tax could generate approximately $57.9 billion in federal revenue over ten years—even if states that currently prohibit cannabis maintained their existing laws.

If all 50 states legalized and regulated medical and adult-use cannabis, Yale estimates that federal excise-tax revenue could climb to approximately $111.3 billion over the same ten-year period.

Those estimates make one thing increasingly difficult to ignore: America already has an enormous cannabis economy. The real question is whether that economy will continue operating under a costly patchwork of conflicting laws or be brought into a transparent, regulated and taxable system.

How Would the Proposed Federal Cannabis Tax Work?

Yale’s analysis models a federal excise tax based on the amount of THC contained in a cannabis product rather than simply taxing its retail price.

The proposed rate is $0.00625 per milligram of THC. Based on Yale’s assumptions about average potency, that would translate to approximately $1.31 in federal tax per gram of cannabis flower.

At an estimated average price of $8.59 per gram, Yale says the federal tax would produce roughly a 15 percent increase in the tax-inclusive price.

The model treats cannabis similarly to products such as alcohol and tobacco, where certain federal taxes are connected to quantity or potency. A THC-based tax would generate revenue according to the psychoactive content of the product instead of fluctuating solely with retail prices.

That approach may appear straightforward on paper. In practice, however, lawmakers would need to be extremely careful.

Legal cannabis products are already subject to substantial state and local taxes in many markets. Adding an excessive federal tax on top of existing taxes, licensing fees and regulatory expenses could make legal products less competitive with illicit sellers.

Legalization should encourage people to enter the regulated market—not punish them for leaving the underground one.

The $58 Billion Estimate Assumes Current State Laws Remain in Place

One of the most important details in Yale’s report is that its $57.9 billion estimate does not assume nationwide state-level legalization.

Under the first scenario, the federal government legalizes cannabis for medical and adult use while individual states retain their existing policies. States with regulated cannabis markets would continue operating those markets, while prohibition states could continue banning sales.

Even within that limited scenario, the proposed federal excise tax is projected to raise nearly $58 billion over ten years.

Under Yale’s second scenario, the federal government legalizes cannabis and every remaining state creates legal medical and adult-use markets. That broader reform is projected to generate approximately $111.3 billion in federal excise-tax revenue over ten years.

The original NORML report also notes that Yale projects approximately $134 billion in revenue over 20 years if existing state policies remain constant.

America’s Legal Cannabis Market Is Already a Major Economy

Yale estimates that the country’s state-regulated recreational cannabis market generated approximately $25 billion in sales during 2024. Without federal legalization or additional states entering the market, researchers project that figure could approach $40 billion by 2035.

The medical cannabis sector adds an estimated $5 billion to $8 billion in annual sales.

That is only the regulated portion of the market.

Yale’s analysis cites estimates placing the combined legal and illicit American cannabis economy at approximately $100 billion. A significant percentage of that activity reportedly remains outside licensed and regulated systems.

Federal legalization could help move more of that economic activity into the formal market by reducing barriers involving banking, interstate commerce and ordinary business operations.

However, the transition will only work if legal businesses can realistically compete.

If policymakers impose layers of federal, state and local taxation that make licensed products dramatically more expensive, consumers will have an economic incentive to remain in the illicit market. A successful federal cannabis policy must balance revenue generation with affordability, consumer safety and the ability of licensed businesses to survive.

The Federal Revenue Could Extend Beyond an Excise Tax

The projected $57.9 billion represents excise-tax revenue—not the entire potential economic benefit of legalization.

Federal legalization could also bring more workers and businesses into the conventional financial and tax systems. Employees working in a fully legal industry could receive traditional wages and pay federal income and payroll taxes. Independent operators and business owners could report income through the same structures used throughout the rest of the economy.

Yale acknowledges that these changes could produce additional federal revenue but does not include them in its central excise-tax projections because of uncertainty surrounding the transition from illicit to legal commerce.

That means the report’s headline estimate may not capture all the revenue associated with ending federal prohibition.

Legalization Must Also Address Section 280E

Federal cannabis policy cannot be evaluated solely by asking how much new tax revenue the government can collect. Lawmakers must also consider the extraordinary tax treatment currently imposed on state-licensed cannabis businesses.

Section 280E of the Internal Revenue Code prevents businesses trafficking in Schedule I or Schedule II controlled substances from deducting ordinary business expenses.

As a result, a state-licensed cannabis retailer may be unable to deduct expenses such as rent, payroll, utilities, insurance and marketing from its federal taxable income. Businesses can generally account for the cost of goods sold, but they can otherwise be taxed on something far closer to gross income than actual profit.

This can create effective tax rates that would be financially devastating in almost any other industry.

Yale’s legalization scenarios assume that the burden of Section 280E would be removed. That change could help licensed operators become more financially stable and make it easier for the regulated market to compete against unlicensed sellers.

It would also end a federal policy that simultaneously refuses to recognize state-legal cannabis businesses while demanding disproportionately large tax payments from them.

States Have Already Generated More Than $28 Billion From Adult-Use Cannabis

The federal government does not need to speculate about whether regulated cannabis can generate public revenue. States have already demonstrated it.

According to data previously compiled by the Marijuana Policy Project and cited by NORML, state and local governments have collected more than $28 billion in tax revenue from legal adult-use cannabis sales.

That funding has supported various state and community priorities while replacing a portion of the underground market with licensed businesses, product testing, age restrictions and regulatory oversight.

These state-level results do not mean every cannabis tax policy has been successful. Some jurisdictions have taxed legal products so heavily that licensed operators struggle to compete. Nevertheless, the broader lesson is clear: regulation generates public revenue, while prohibition leaves the market largely in the hands of unregulated sellers.

Cannabis Legalization Is an Economic Policy Issue

The debate over federal cannabis reform is often presented strictly as a criminal justice or personal liberty issue. Those remain essential parts of the conversation, but Yale’s analysis reinforces another reality: cannabis legalization is also a major economic policy issue.

Congress must decide whether to continue maintaining a system that:

• Preserves an enormous illicit market

• Restricts banking and financial services

• Punishes licensed businesses through Section 280E

• Prevents consistent national regulation

• Leaves potential federal revenue unrealized

• Maintains conflict between state and federal law

A well-designed legalization system could create a more transparent marketplace, protect consumers, support legitimate businesses and generate meaningful public revenue.

But the details matter. Federal lawmakers should not see legalization as an opportunity to pile another unsustainable tax onto already burdened state markets. The goal should be to bring consumers and businesses into the legal system—not price them out of it.

The Bottom Line

Yale’s findings provide another compelling argument for comprehensive federal cannabis reform.

Under current state policies, federal legalization and a THC-based excise tax could generate approximately $57.9 billion over ten years. If every state established regulated cannabis markets, the federal estimate could rise to more than $111 billion.

Those figures do not fully account for potential income and payroll taxes generated as workers and businesses transition into the formal economy.

Cannabis is already being produced, purchased and consumed throughout the United States. Prohibition has not eliminated that market. It has simply ensured that much of the economic activity remains underground while legal businesses navigate conflicting laws and punitive federal tax policies.

Federal legalization would allow the country to replace that contradiction with a system based on regulation, accountability and common sense.

For continuing coverage of cannabis policy, research, legalization and criminal justice reform, read your cannabis news from National NORML and Suncoast NORML.

This article was inspired by and cites National NORML’s original report, “Yale Analysis: Federal Excise Tax on State-Legal Cannabis Products Would Yield $58 Billion in Ten Years”. Additional figures and methodology come from The Budget Lab at Yale University.