The Natural Economic Order by 📝Silvio Gesell
Gesell’s “free-money” (as he called it) bears a form of negative interest called demurrage. Periodically, a stamp costing a tiny fraction of the currency’s denomination must be affixed to it, in effect a “user fee” or a “maintenance cost”; another way to look at it is that the currency “goes bad”—depreciates in value—as it ages.[4]