This article reports a change in Czech drug law that took effect on 1 January 2026. It is based on a post by Czech drug-policy reform campaigners. The original post was written before the law was final. This version brings the timeline up to date and adds notes for growers in Thailand and Southeast Asia.
In brief
- In Czechia, adults over 21 need no permit to keep up to 100 g of cannabis at home or up to 25 g elsewhere. They may also grow up to 3 plants. All of this is for personal use only.
- Amounts above those limits are still punished. Smaller excesses are administrative offences, and larger ones are crimes.
- Psilocybin, the active compound in “magic mushrooms”, is now allowed for therapy in psychiatric facilities.
- Many other reforms that campaigners asked for did not pass.
- None of this applies in Thailand. Thai cannabis law works in a completely different way. See the translator’s notes below.
How the law passed
The Chamber of Deputies is the lower chamber of the Czech parliament. It approved the changes first. The Senate and the President then also had to approve them. That happened, and the changes became law as Act No. 270/2025 Coll. (“Coll.” means the Czech official Collection of Laws). The Act took effect on 1 January 2026.
The campaigners called this a small step in the right direction. They also thanked everyone who had pushed for the changes.
What adults may now keep and grow
The personal-use limits are set out in Act No. 167/1998 Coll., § 5(12) and (13). This is the Czech law on addictive substances. The table shows how the law treats three levels of quantity.
| Situation | Up to this amount: allowed, no permit needed (people over 21) | Above the limit: administrative offence | Above this amount: criminal offence |
|---|---|---|---|
| Cannabis kept at home | 100 g | more than 100 g, up to 200 g | more than 200 g |
| Cannabis carried elsewhere | 25 g | more than 25 g, up to 50 g | more than 50 g |
| Plants grown | up to 3 plants | 4–5 plants | more than 5 plants |
An administrative offence is handled as a minor violation, not as a crime. The criminal thresholds come from the Czech Criminal Code, § 285.
The rules are stricter for people aged 21 or younger. For them, possessing any amount below the criminal thresholds is an administrative offence. So the “no permit needed” column applies only to people over 21.
The law gives these allowances to people over 21. The legal text does not mention citizenship or residence. The 100 g limit applies in a person’s own home. This article could not confirm how that limit applies to a visitor staying in a hotel or rented room.
If you have friends or customers in Czechia, send them to the official Czech legal text before they act. A forum summary is no substitute for it.
Lighter treatment for cannabis offences
The original post says that cannabis-related conduct is now treated as a “privileged” offence instead of a serious one. In Czech criminal law, a “privileged” offence is a milder form of a crime with a lower penalty range. The Act created a separate offence for producing and dealing in cannabis, § 283a of the Criminal Code. Its basic penalty is up to 1 year in prison. The general drug offence, § 283, carries 1 to 5 years. Growing and possessing cannabis for personal use above the limits falls under § 285. In practice, cannabis offences now carry less criminal liability than other drug offences.
Psilocybin for therapy
Psilocybin is the active compound in so-called magic mushrooms. The same Act allows it to be used for therapy. Three conditions apply:
- treatment takes place in psychiatric facilities,
- it is given under medical supervision, and
- patients must be over 18.
The campaigners saw this as an important step for mental health care. The change covers medical treatment only. It does not allow personal use.
What the reform did not change
The campaigners listed four demands that did not pass:
- Penalties for drug offences stay the same. Outside the cannabis changes, sentence ranges for drug offences were not lowered. The campaigners consider these punishments disproportionate.
- Two addiction services remain illegal. These are safe consumption rooms and drug testing at festivals. Safe consumption rooms are places where people use their own drugs while trained staff watch over them. Festival drug testing checks what a substance really contains, so users know what they are taking.
- An older offence of “spreading toxic addiction” remains. In Czech it is “šíření toxikomanie”, § 287 of the Criminal Code. It roughly means promoting or encouraging drug use. The campaigners say it gets in the way of drug education and harm reduction. Harm reduction means services that lower the damage to people who already use drugs, without first requiring them to stop.
- Pilot projects for regulated legal sale were blocked. These would have been research trials of a legal, regulated cannabis market. The campaigners point to Germany, Switzerland and the Netherlands as examples of successful models.
The campaigners called the new law only a first step. They want broader, systematic change that is willing to reconsider old approaches to drug policy.
Image: from the original post.
Translator’s note: how this compares with Thailand
Czechia now gives adults a fixed personal allowance. Thailand’s cannabis rules do not work that way.
- Cannabis flower is a controlled herb in Thailand. This comes from the Notification of the Ministry of Public Health Re: Controlled Herbs (Cannabis), B.E. 2568. It was issued under the Thai Traditional Medicine Protection Act B.E. 2542 and came into force on 26 June 2025.
- Flower may be sold only with a prescription. The prescription is a PT 33 (ภ.ท.33) and covers at most 30 days.
- Advertising and online sale of flower are prohibited.
- Licence rules were tightened in 2026. The Ministerial Regulation on Controlled Herbs (No. 2) B.E. 2569 came into force on 30 April 2026. It tightens the licence criteria for cannabis flower. A separate Ministerial Regulation on Cannabis or Hemp Extracts B.E. 2569 came into force on 26 April 2026. Under it, licences for extracts above 0.2% THC go only to three groups: Thai juristic persons that are not “foreign” under the Foreign Business Act B.E. 2542, state agencies, and the Thai Red Cross Society.
- Penalties. Section 78 of the 1999 Act allows up to 1 year in prison, a fine of up to 20,000 baht, or both.
- A new law is not in force yet. The Cabinet approved the draft Cannabis Control Act on 22 September 2026 and sent it to the House. Until it passes, the rules above still apply.
This article does not confirm any Thai personal possession amount or home-growing allowance like the Czech 100 g / 25 g / 3-plant limits. Do not assume one exists.
This article does not cover the status of psilocybin or magic mushrooms in Thailand. Do not assume the Czech therapy rule applies here.
A Czech home-grow allowance has no effect on what you may do in Thailand. Before you grow, sell or post about flower here, check your own licence conditions against the rules listed above.
Translator’s note: travel and borders
Each country’s allowance applies only inside that country. Cannabis that is legal to hold in Czechia or Thailand can still be a serious crime at the next border. Rules across Asia differ greatly; see cannabis laws across Asia and the rules for visitors to Thailand.
- Do not carry cannabis, seeds or extracts across any border unless you hold the export and import paperwork for both countries.
- Check the law of your destination and every transit country before you travel.
What you can do now
- Before travelling to Czechia, read the official limits for the age group you fall into. Then you will know where an administrative offence ends and a criminal offence begins.
- Keep your Thai licence or PT 33 records up to date. These documents are what protects you under Thai law, not any foreign allowance.
- If you have questions about how the Czech model compares with Thai or other Southeast Asian rules, post them below this topic.
References
- Act No. 270/2025 Coll. (Czech Republic), in force 1 January 2026.
- Act No. 167/1998 Coll. on Addictive Substances (Czech Republic), § 5(12) and (13).
- Criminal Code of the Czech Republic, § 285.
- Thai sources: Notification of the Ministry of Public Health Re: Controlled Herbs (Cannabis) B.E. 2568; Ministerial Regulation on Cannabis or Hemp Extracts B.E. 2569; Ministerial Regulation on Controlled Herbs (No. 2) B.E. 2569; Thai Traditional Medicine Protection Act B.E. 2542, section 78.