The group Verein Sterbehilfe Deutschland (StHD) told reporters in Zurich that it was pushing for Germany to adopt legislation similar to that in Switzerland, which allows assisted suicide.
The group, which has some 300 members and claims to have assisted in around 60 suicides, has no plans to help anyone take their life in Switzerland, StHD head Roger Kusch said, according to Swiss news agency ATS.
The group's decision to open up shop in Zurich was instead linked to fear that it could be prosecuted under a law that is likely to pass in Germany making assisted suicide for profit a criminal offence, he explained.
On its website, the Hamburg-based organization says it charges an annual membership fee of €200 (243 francs, $262), or a life-long membership fee of €2,000.
But Kusch insisted the group he created in 2010 was not a commercial enterprise, pointing out that it had recently changed its rules so the membership dues would be returned in the case of an assisted suicide.
It was unclear however who the money would go to.
Despite the change, StHD could find itself banned in Germany if the new law passes, ATS reported, pointing out that the group in that case could continue to exist in Switzerland.
Swiss law allows for "passive" or "indirect active" assistance to suicide, such as supplying a person with a lethal dose of a drug, provided it is not done for selfish motives or for gain.
In 2008, Kusch created an organization called "Dr. Roger Kusch Assisted Suicide", which was banned in Germany for charging €8,000 each time it helped someone take their own life.
"That was a mistake," he said on Friday, according to ATS.