1% THC Threshold — the Swiss CBD compass
One percent — that's all it takes to turn a 'narcotic' into a legal consumer product in Switzerland. Origin, measurement and why this threshold matters.
Switzerland classes hemp products as narcotics only from 1.0% total THC (BetmVV-EDI annex 6). 'Total THC' = THC + 0.877 × THCA. Measured by HPLC or GC-FID at an accredited lab. EU: 0.2–0.3%. The Swiss threshold is unique in Europe — the foundation of the entire legal CBD market.
Why exactly 1%?
Before 2011 there was no explicit Swiss THC limit. The BetmVV-EDI revision introduced the 1% limit to cleanly separate industrial hemp and CBD products.
The 1% figure is a political compromise: high enough to allow CBD-rich varieties with natural THC, low enough to prevent noticeable psychoactive effects.
How total THC is measured
Formula: Total THC = Δ9-THC + 0.877 × THCA. The 0.877 factor reflects the molar mass difference during decarboxylation.
Methods: HPLC or GC-FID at accredited Swiss labs. Cost: CHF 80–150 per analysis.
What happens above the threshold?
A batch ≥1% total THC cannot be sold as CBD. Sanctions: seizure, criminal complaint (NarcA Art. 19), licence loss, recalls. Serious producers test every batch and publish a CoA.
International comparison
EU: 0.2–0.3%. Germany: 0.3%. France: 0.3%. Italy: 0.5%. USA: 0.3%. Switzerland (1%) is unique in Europe.
FAQ
What is 'total THC'?
Total THC = active THC + 0.877 × THCA. Accounts for THCA converting to THC when heated.
Is 0.99% THC noticeable?
No. Noticeable psychoactive effects start around 5–10 mg THC per consumption unit.
Who measures THC content?
Accredited Swiss labs (HPLC or GC-FID). CHF 80–150 per batch.
What happens above 1%?
Sales ban, seizure, possible criminal complaint, licence loss.
Why is Switzerland so liberal?
The 1% threshold is a 2011 political compromise.