Marijuana is legal in Illinois for both recreational and medical use. Adults 21 and older may purchase marijuana from licensed dispensaries, while registered medical marijuana patients receive additional benefits including home cultivation and lower taxes.
Illinois legalized recreational marijuana in 2019, with licensed adult-use sales beginning January 1, 2020. In June 2026, the state significantly expanded its possession limits, allowing Illinois residents to legally possess twice as much marijuana as previously allowed.
This page covers Illinois possession limits, purchasing rules, home cultivation, medical marijuana, taxes, penalties and other major laws. For laws in other states, visit The Marijuana Herald’s Marijuana Laws by State guide.
Last updated: September 13, 2026
Illinois Marijuana Laws at a Glance
| Law | Current Rule |
|---|---|
| Recreational marijuana | Legal for adults 21 and older |
| Resident possession limit | 60 grams of flower, 10 grams of concentrate and up to 1,000 mg of THC in infused products |
| Nonresident possession limit | 30 grams of flower, 5 grams of concentrate and up to 500 mg of THC in infused products |
| Recreational sales | Legal |
| Home cultivation | Only for registered medical marijuana patients |
| Medical home grow | Up to 5 plants over 5 inches tall per household |
| Medical marijuana | Legal |
| Medical purchase limit | Generally 2.5 ounces every 14 days, unless a larger amount is approved |
| Public consumption | Illegal |
| Consumer delivery | Generally not allowed |
| Minimum recreational age | 21 |
Is Recreational Marijuana Legal in Illinois?
Yes. Recreational marijuana is legal in Illinois for adults 21 and older.
Illinois lawmakers approved the Cannabis Regulation and Tax Act in 2019, and legal recreational sales began January 1, 2020. Adults do not need a medical marijuana card to purchase from a licensed adult-use dispensary.
Illinois residents and visitors are subject to different possession limits.
How Much Marijuana Can You Possess in Illinois?
Illinois residents who are 21 or older may possess up to:
- 60 grams of marijuana flower
- 10 grams of marijuana concentrate
- Cannabis-infused products containing up to 1,000 milligrams of THC
Nonresidents may possess up to 30 grams of flower, 5 grams of concentrate and infused products containing up to 500 milligrams of THC.
The limits are cumulative, meaning an adult may possess products from each category up to the applicable limit.
Illinois previously allowed residents to possess 30 grams of flower, 5 grams of concentrate and 500 milligrams of THC in infused products. Public Act 104-0463 doubled those limits effective June 12, 2026.
How Much Marijuana Can You Buy in Illinois?
Adults 21 and older may purchase marijuana from licensed Illinois dispensaries.
An Illinois resident may purchase marijuana as long as the purchase does not cause the person to exceed the state’s possession limits of 60 grams of flower, 10 grams of concentrate and 1,000 milligrams of THC in infused products.
Nonresidents are limited to 30 grams of flower, 5 grams of concentrate and 500 milligrams of THC in infused products.
State law specifically prohibits knowingly obtaining an amount that would cause a person to exceed the applicable possession limit.
Can You Grow Marijuana at Home in Illinois?
Recreational consumers generally cannot grow marijuana at home in Illinois.
Home cultivation is restricted to Illinois residents who are at least 21 and registered as qualifying medical marijuana patients. A household may have no more than five marijuana plants that are more than five inches tall.
Plants must be kept in an enclosed, locked space and cannot be visible to the public. Cultivation must occur on residential property lawfully possessed by the patient or with the consent of the person who controls the property. Landlords may prohibit tenants from growing marijuana.
The five-plant limit applies per household rather than per patient.
Is Medical Marijuana Legal in Illinois?
Yes. Illinois has a comprehensive medical marijuana program.
Registered qualifying patients generally may obtain up to 2.5 ounces of usable marijuana during a 14-day period. A patient may seek approval for a larger amount when a health care professional provides a medical basis showing that 2.5 ounces is insufficient.
Registered adult patients also receive one of Illinois’ most significant medical-program benefits: the ability to grow up to five marijuana plants at home.
Medical patients also receive substantial tax savings. Medical marijuana is taxed at the state’s 1% rate applicable to qualifying drugs and is generally exempt from locally imposed retailers’ occupation taxes, while recreational marijuana is subject to separate cannabis excise taxes in addition to state and local sales taxes.
Medical access expanded further in September 2026. On September 10, the Illinois Department of Financial and Professional Regulation announced that 37 existing adult-use dispensaries had received medical marijuana licenses, allowing them to serve registered patients at the medical tax rate.
What Conditions Qualify for Medical Marijuana in Illinois?
Illinois recognizes a broad list of qualifying conditions, including:
- Agitation of Alzheimer’s disease
- Amyotrophic lateral sclerosis
- Anorexia nervosa
- Arnold-Chiari malformation
- Autism
- Cachexia or wasting syndrome
- Cancer
- Causalgia
- Chronic inflammatory demyelinating polyneuropathy
- Chronic pain
- Complex regional pain syndrome Type II
- Crohn’s disease
- Dystonia
- Ehlers-Danlos syndrome
- Endometriosis
- Female orgasmic disorder
- Fibrous dysplasia
- Glaucoma
- Hepatitis C
- HIV/AIDS
- Hydrocephalus
- Hydromyelia
- Interstitial cystitis
- Irritable bowel syndrome
- Lupus
- Migraines
- Multiple sclerosis
- Muscular dystrophy
- Myasthenia gravis
- Myoclonus
- Nail-patella syndrome
- Neuro-Bechet’s autoimmune disease
- Neurofibromatosis
- Neuropathy
- Osteoarthritis
- Ovarian cysts
- Parkinson’s disease
- Polycystic kidney disease
- Polyendocrine Metabolic Ovarian Syndrome with chronic pain
- Post-concussion syndrome
- Post-traumatic stress disorder
- Reflex sympathetic dystrophy
- Residual limb pain
- Rheumatoid arthritis
- Seizures, including those characteristic of epilepsy
- Severe fibromyalgia
- Sickle cell disease
- Sjögren’s syndrome
- Spinal cord disease
- Spinal cord injury with objective neurological indication of intractable spasticity
- Spinocerebellar ataxia
- Superior canal dehiscence syndrome
- Syringomyelia
- Tarlov cysts
- Tourette syndrome
- Traumatic brain injury
- Ulcerative colitis
- Uterine fibroids
Illinois also operates an Opioid Alternative Patient Program for qualifying adults who have a medical condition for which an opioid has been or could be prescribed.
Can Tourists Buy Marijuana in Illinois?
Yes. Adults 21 and older visiting Illinois may purchase recreational marijuana from licensed dispensaries.
Visitors do not need to be Illinois residents, but they are subject to lower possession limits than residents. Nonresidents may possess up to 30 grams of flower, 5 grams of concentrate and 500 milligrams of THC in infused products.
Marijuana purchased legally in Illinois cannot legally be transported across state lines.
Where Can You Use Marijuana in Illinois?
Marijuana generally may be consumed on private property where its use is allowed by the property owner.
Consumption is prohibited in public places, including streets, parks and most other locations where a person could reasonably be observed by others. Marijuana use is also prohibited in motor vehicles, government property and other locations specified by state law.
Illinois law allows local governments to authorize marijuana consumption lounges, including certain locations associated with dispensaries or qualifying tobacco retailers.
Marijuana remains prohibited on federal property even when that property is located within Illinois.
Can You Drive With Marijuana in Illinois?
Adults may transport legally possessed marijuana in a vehicle, but special rules apply.
While a vehicle is operating, marijuana must be kept in a secured, sealed, odor-proof and child-resistant container in its original packaging. Using marijuana while driving is illegal, and driving while impaired by marijuana remains a criminal offense.
Marijuana may not be transported across state lines, even when traveling to another state where marijuana is legal.
Can You Give Marijuana to Someone Else in Illinois?
Illinois allows noncommercial marijuana gifting between adults, but the transfer must be a genuine gift. Selling marijuana without the appropriate state license remains illegal.
The person receiving the marijuana must be legally allowed to possess it and cannot be pushed above the applicable possession limit.
Different rules apply to marijuana grown by registered medical patients. Medical patients may not give away marijuana produced through their home cultivation privileges, and seeds purchased for medical home cultivation cannot be given or sold to nonqualifying individuals.
Is Marijuana Delivery Legal in Illinois?
Illinois does not generally allow licensed dispensaries to deliver marijuana directly to consumers at their homes or other locations.
State law prohibits dispensing organizations from transporting marijuana to residences or other locations for delivery to purchasers, subject to limited statutory exceptions.
However, changes enacted in 2026 allow dispensing organizations to offer approved pickup or drive-through locations.
How Is Recreational Marijuana Taxed in Illinois?
Illinois imposes a purchaser excise tax based on the type and potency of recreational marijuana:
| Product | State Cannabis Purchaser Excise Tax |
|---|---|
| Marijuana with an adjusted THC level of 35% or less | 10% |
| Marijuana with an adjusted THC level above 35% | 25% |
| Marijuana-infused products | 20% |
Adult-use purchases are also subject to the state’s 6.25% general sales tax and applicable local taxes. Municipalities and counties may impose additional marijuana-specific retail taxes within statutory limits.
Medical marijuana is not subject to the adult-use purchaser excise tax and is generally taxed at the state’s 1% rate applicable to qualifying drugs.
Can Local Governments Have Different Marijuana Rules?
Yes. Local governments may regulate aspects of marijuana businesses through zoning and other local rules, and municipalities may authorize certain on-site consumption locations.
Consumers should therefore check local rules in addition to statewide law, particularly when it comes to marijuana businesses and consumption lounges.
What Are the Penalties for Illegal Marijuana Possession in Illinois?
Adults who remain within Illinois’ legal possession limits generally face no criminal penalty for possession that complies with the Cannabis Regulation and Tax Act.
Possessing marijuana outside the protections of the legalization law can result in penalties under the Illinois Cannabis Control Act. For an Illinois resident 21 or older, the first possession threshold above the legal 60-gram flower limit is more than 60 grams but not more than 100 grams.
| Illegal Possession Amount | Penalty |
|---|---|
| More than 30 grams through 60 grams for a nonresident whose lawful limit is 30 grams | Class B misdemeanor |
| More than 60 grams through 100 grams | Class A misdemeanor for a first offense; Class 4 felony for a subsequent offense |
| More than 100 grams through 500 grams | Class 4 felony for a first offense; Class 3 felony for a subsequent offense |
| More than 500 grams through 2,000 grams | Class 3 felony |
| More than 2,000 grams through 5,000 grams | Class 2 felony |
| More than 5,000 grams | Class 1 felony |
A Class B misdemeanor can carry up to six months in jail, while a Class A misdemeanor can carry a sentence of less than one year and a fine of up to $2,500. A Class 4 felony generally carries one to three years in prison. More serious felony classifications carry increasingly severe penalties.
The Cannabis Control Act also contains penalties for smaller amounts when possession is not otherwise protected by Illinois’ legalization law, such as possession in circumstances where the Cannabis Regulation and Tax Act does not apply.
What Changed in Illinois Marijuana Law in 2026?
Illinois made several significant marijuana policy changes in 2026.
Public Act 104-0463 took effect June 12 and doubled the recreational possession limits for Illinois residents from 30 grams to 60 grams of flower, from 5 grams to 10 grams of concentrate and from 500 milligrams to 1,000 milligrams of THC in infused products. The law also made changes affecting medical marijuana access, dispensaries and other portions of the state’s regulated market.
Then, on September 10, state regulators announced that 37 existing adult-use dispensaries had received licenses allowing them to also serve medical marijuana patients, substantially increasing the number of locations where patients can purchase at the medical tax rate.
Residents should also be aware that legalization does not eliminate restrictions on impaired driving or guarantee workplace protections. See our guides to marijuana DUI laws by state and marijuana employment laws for a broader look at how Illinois compares with other states.
People with past marijuana convictions may also qualify for record-clearing relief. Our Marijuana Expungement Laws by State guide explains how all 50 states handle expungement and related relief.
Official Sources
Illinois Cannabis Regulation and Tax Act: Illinois General Assembly
Illinois Cannabis Control Act possession penalties: Illinois General Assembly
Illinois marijuana consumer FAQs: Illinois Cannabis Regulation Oversight Office
Medical marijuana qualifying conditions: Illinois Department of Public Health
Illinois marijuana tax information: Illinois Department of Revenue
