Oregon Cannabis Law Overview

Last verified: March 2026

Oregon's Cannabis Timeline

Possession Limits

These limits apply equally to Oregon residents and visitors. There is no residency requirement for purchasing or possessing recreational cannabis.

Home Cultivation

Oregon allows 4 cannabis plants per household for personal use. Key rules:

• Plants must be in a locked, enclosed area not visible from public
• Limit is per household, not per person (roommates share the 4-plant cap)
• You may possess the harvest from your plants (within home possession limits)
• You cannot sell homegrown cannabis — commercial sales require an OLCC license

Tax Structure

A critical detail for visitors: Oregon has no general sales tax. Cannabis is one of the few products that carries any tax at all. Everything else you buy in Portland — food, clothing, electronics — is sales-tax-free. The 20% cannabis tax may feel high, but it's the only tax you'll encounter during your visit.

Medical Cannabis (OMMP)

The Oregon Medical Marijuana Program (OMMP) operates alongside the recreational market with significant benefits:

OMMP cards require an Oregon doctor's recommendation and are available to Oregon residents. Visiting patients from other states cannot use their home state medical cards for OMMP benefits in Oregon.

Consumption Laws

Where You Can Consume

• Private property with the owner's permission
• Social consumption spaces (see Lounges & Social Spaces)

Where You Cannot Consume

• All public places — streets, parks, sidewalks, plazas
• Within 10 feet of building entrances (Indoor Clean Air Act)
• Public transit (TriMet buses, MAX, streetcar)
• Federal property (PDX airport, federal buildings, post offices)
• Vehicles (moving or parked, driver or passenger)

Violation: Class B violation, up to $1,000 fine.

DUI / DUII Law

Oregon's cannabis DUI law is notable for what it doesn't include: there is no per se THC limit. Unlike alcohol (0.08% BAC threshold), Oregon does not specify a blood THC concentration that automatically constitutes impairment. Instead:

• Officers rely on field sobriety tests and Drug Recognition Expert (DRE) evaluations
• Any observable impairment can result in a DUII (Driving Under the Influence of Intoxicants) charge
• The offense is DUII — the same charge as alcohol DUI, with the same penalties
• DUII diversion is available for first-time offenders, potentially avoiding a conviction through treatment and monitoring

Interstate Transport

Transporting cannabis across any state line is a federal crime, regardless of the legality in both states. This is especially relevant in Portland because:

• Washington state is across the river — do not take cannabis over the I-5 or I-205 bridges, even though WA is also legal
• PDX airport is federal property — do not bring cannabis through security
• The Columbia River Gorge crosses into Washington — if you're hiking on the WA side, leave your cannabis in Oregon

Oregon's Total Cannabis Tax Revenue

Since legalization, Oregon has collected over $1.3 billion in cannabis tax revenue. Revenue allocation is set by state law, with portions going to schools, public health, law enforcement, and local governments. Portland's 3% local tax funds city programs including the SEED Initiative.

However, revenue has declined significantly from peak levels due to the oversupply crisis, with a 38% drop and a $26.2 million shortfall against projections.

Official Sources

• Oregon Liquor and Cannabis Commission (OLCC)
• Oregon Health Authority — Cannabis
• City of Portland Cannabis Program
• Oregon Legislature