Cannabis excise taxes by state fall into three structures: a percentage of the sale price, a flat dollar rate per weight of product, or a rate tied to THC potency. Some states combine two of these. Once you layer general sales tax and local cannabis levies on top, the total tax a consumer pays at the register typically runs from about 15% in lower-tax jurisdictions to more than 35% in higher-tax ones.
Percentage of Sale Price
The most common model taxes cannabis as a percentage of the sale price, the same way sales tax works. Washington applies a 37% excise tax on every retail sale of cannabis flower, concentrates, and infused products, calculated on the selling price at the register.1Washington State Legislature. Revised Code of Washington 69.50.535 – Cannabis Excise Taxes That 37% is separate from general state and local sales tax, which still applies on top.
Colorado uses a percentage model but collects at a different point. Its 15% excise tax hits the first sale or transfer from a cultivation facility to a retail store or manufacturer, rather than at the cash register.2Colorado Department of Revenue. Marijuana Excise Tax
Percentage-based taxes are simple to administer because retailers already track gross receipts. The tradeoff is that state revenue rises and falls with retail prices. When competition drives prices down, tax collections shrink even if the same volume moves off shelves.
Weight-Based Taxes
Weight-based taxes shift collection upstream to cultivators and charge a flat dollar amount per ounce. Alaska imposes a $50-per-ounce excise on marijuana sold or transferred from a cultivation facility to a retail store or manufacturer, with the Department of Revenue authorized to set a reduced rate of $15 per ounce on less valuable material like stems and leaves.3Justia Law. Alaska Code 43.61.010 – Marijuana Tax
California ran a similar system before repealing its cultivation tax in mid-2022. Cultivators had paid $9.25 per dry-weight ounce of flower and $2.75 per ounce of leaves.4California Department of Tax and Fee Administration. California Revenue and Taxation Code 34012 – Cultivation Tax The combined weight of cultivation and retail excise taxes was pushing licensed operators toward failure while the untaxed illicit market kept its share.
Weight-based taxes give states a stable revenue floor that doesn’t collapse when retail prices drop, because the tax follows physical quantity rather than market value. Compliance sits with growers, who need rigorous weighing tied to state seed-to-sale tracking, and inspectors verify those figures during audits.
Potency-Based Taxes
A growing number of states link the rate to THC concentration on the theory that more potent products should carry a higher tax. Illinois divides cannabis into three tiers: flower and other non-infused products at or below 35% THC are taxed at 10% of the purchase price, non-infused products above 35% THC face a 25% rate, and cannabis-infused products like edibles are taxed at 20%.5FindLaw. Illinois Code 410 ILCS 705/65-10 – Tax Imposed6Illinois Department of Revenue. Cannabis Taxes Vape cartridges containing concentrate are taxed by THC percentage (10% or 25%), not at the flat 20% edible rate.
New York goes further, taxing by the actual milligram of THC in each product rather than by percentage brackets. Under New York Tax Law Section 493, the tax is imposed per milligram of total THC, with separate rates for flower, concentrated cannabis, and edibles.7New York State Senate. New York Tax Law 493 – Imposition of Tax A per-milligram tax requires laboratory testing of every batch, and manufacturers must keep detailed lab reports to support the tax calculation on each product.
Potency models push producers and buyers toward lower-THC products. The complexity is real: every product needs verified lab results, and any mismatch between tested potency and reported potency creates audit exposure.
Medical vs. Adult-Use Rates
Most states that tax recreational cannabis either exempt medical marijuana from excise taxes entirely or tax it at a substantially lower rate. Approaches vary. Some states exempt medical purchases from the cannabis-specific excise but still apply general sales tax. Others exempt medical products from both. A few treat medical cannabis as a qualifying drug taxed at the reduced pharmaceutical rate rather than the standard retail rate.
Access to medical pricing typically requires a state-issued patient card, a qualifying condition verified by a physician, and sometimes an annual registration fee. Operators who sell both categories need separate accounting, because the tax treatment differs at the register.
Local Add-Ons and Tax Stacking
Most legalizing states let cities and counties add their own tax on top of the state rate. Local overlays typically range from 1% to 10%, depending on caps in the enabling legislation, and they fund local priorities like zoning enforcement, code compliance, and public safety near cannabis businesses. Two dispensaries in the same state can charge noticeably different prices depending on which city they sit in.
A subtler problem shows up when local governments use gross receipts taxes rather than a retail excise. A gross receipts tax hits every business in the supply chain, not just the final retailer. A cultivator pays it, bakes the cost into the wholesale price, the processor pays it again on their now-higher gross receipts, and the retailer pays it a third time. This pyramiding pushes the consumer’s effective burden well above the headline local rate.
Stack it all together — state excise, general sales tax, and any municipal cannabis levy — and total effective rates for consumers routinely land between 20% and 35% in many legalized states. That combined number is what actually competes with the illicit market.
Section 280E: The Federal Layer Operators Can’t Ignore
State excise taxes are only half the picture for cannabis businesses. Under Section 280E of the Internal Revenue Code, no deduction or credit is allowed for any amount spent carrying on a business that consists of trafficking in Schedule I or II controlled substances.8Office of the Law Revision Counsel. 26 USC 280E – Expenditures in Connection With the Illegal Sale of Drugs Because cannabis remains a Schedule I substance federally, every state-legal cannabis business falls under this rule.
In practice, a dispensary or cultivation operation cannot deduct rent, utilities, employee wages beyond production labor, marketing, insurance, or the ordinary overhead that every other business subtracts before calculating taxable income. The one exception is cost of goods sold, which covers direct production costs like inventory, freight, packaging, lab testing, and production labor.
The math is harsh. A retailer with $2 million in gross revenue and $1.5 million in total expenses might only be able to claim $800,000 as cost of goods sold. The remaining $700,000 in overhead still came out of the bank, but the IRS treats it as profit. The effective federal income tax rate for cannabis businesses regularly exceeds 70% of actual net income, and most cannabis financial distress traces back to this rule rather than to state excise rates.
Registration and Filing
An operator registers with the state’s department of revenue for a cannabis-specific tax permit, which typically requires the facility’s physical location, the identities of all owners with a significant stake, and proof of a valid state cultivation or retail license. Most states then require monthly or quarterly electronic filing through a centralized portal where the operator reports taxable sales or units, uploads sales logs, and authorizes payment.
Banking access remains spotty because federally regulated banks are reluctant to service the industry, so some jurisdictions maintain designated offices where cannabis businesses can make tax payments in cash by appointment. Late filing penalties typically start at 5% of the unpaid tax and climb depending on how long the delinquency continues, with interest accruing from the original due date.
Delinquency, License Risk, and Personal Liability
States treat cannabis tax delinquency seriously because the whole regulatory framework depends on the revenue flowing correctly. The most common enforcement lever is the license itself: regulators can suspend, revoke, or refuse to renew a cannabis license when the operator is behind on tax obligations. In some states, license applications are automatically denied if the applicant or anyone with a controlling interest owes delinquent taxes at any level of government. A suspended license means the business cannot legally sell product, so a tax problem quickly becomes an existential one.
Personal liability is what catches many owners off guard. In several states, anyone classified as a “responsible person” within a cannabis business can be held personally liable for unpaid excise taxes if the business dissolves or ceases operations. The definition is broad: officers, directors, managers, and anyone else with authority to pay the taxes who chose not to. Under California’s regulations, personal liability attaches when the responsible person had actual knowledge that taxes were due, had the authority to pay them, and had the ability to pay but didn’t.9Legal Information Institute. California Code of Regulations Title 18 3820 – Responsible Person Liability Holding a title without actual control isn’t enough to trigger liability, but the burden of proving you lacked authority falls on you once the state makes its case.
Passive investors and minority partners should pay close attention to whether they hold any role that touches tax oversight. A name on a corporate resolution authorizing tax payments could be enough to qualify, even if someone else ran daily operations.