Cannabis in Geneva: possession, consumption and Swiss law

Which cannabis rules apply in the canton of Geneva? The main boundaries come from federal law. This guide distinguishes possession, consumption and legal proceedings; it does not promise local police tolerance or decide an individual case.

TL;DR: Possessing up to 10 grams of cannabis for personal use is not punishable. Consumption by an adult can instead attract a CHF 100 fixed penalty. These are two separate rules.

Cantonal responsibilities and federal rules

In the canton of Geneva, the basic legal classification of cannabis follows Swiss narcotics law. The canton organizes enforcement and the responsible authorities. This does not create a different federal THC threshold or an automatic cantonal fine schedule for small amounts. If an authority writes to you, the alleged conduct, date and information about appeal rights matter. An online guide cannot replace these details of the actual case.

What the 10-gram rule means

Article 19b of the Narcotics Act concerns small quantities intended for personal consumption; 10 grams counts as a small quantity of cannabis. It does not create a general right to sell cannabis or permission to consume it. Simply possessing that amount is therefore not, by itself, a reason for a CHF 100 fine. Any additional conduct needs a separate legal assessment.

When the CHF 100 penalty applies

The fixed penalty concerns adult cannabis consumption where the conditions for the simplified procedure are met. Minors are subject to juvenile criminal law. Ordinary criminal proceedings and a fixed penalty are consequently different procedures. Where several acts are alleged, their outcome cannot be predicted from the amount of cannabis alone.

More than 10 grams is not a fixed tariff

Above the small-quantity limit, that particular exemption from punishment no longer applies. There is no general tariff saying that 10 to 30 grams always means a particular monetary sentence. Personal use, dealing, culpability and other circumstances affect classification. A police report is not a conviction and does not, by itself, establish whether a criminal-record entry will follow.

Driving and individual decisions

Driving while unfit is assessed under road traffic law. Criminal proceedings, procedural costs and administrative measures must be distinguished; the consumption fine is not a price tag for these consequences. If an authority sends you a decision, check the alleged facts, legal basis and appeal instructions. A general guide cannot replace examination of that document.

Pilot trials do not mean general legalization

Authorized cannabis pilot trials are scientific studies with their own conditions. Whether a project is running, recruiting participants or covers particular municipalities must be checked against current official project information. The canton’s name alone cannot answer those questions. This page therefore does not publish an unverified list claiming “active” or “no trial” and does not guarantee participation or access.

FAQ

Does Geneva have different basic rules for small amounts?

The fundamental distinction between possession for personal use and actual consumption comes from federal law. The responsible authorities and enforcement are organized at cantonal level. Describing a canton as generally “tolerant” is not reliable legal guidance.

Does possessing 5 grams automatically cost CHF 100?

No. Simply possessing up to 10 grams for personal use is not punishable. The fixed penalty concerns consumption under the statutory conditions.

Is there a reliable fine comparison by canton?

Federal law applies throughout Switzerland. The FOPH reports differences in implementation, but these do not provide a reliable canton-by-canton price list for an individual case.

Sources & references