Since the ECB set its key interest rates below zero in June 2014 and the press reported on “negative-interest loans” that states would subscribe to with it, the idea seems to be gaining ground that an individual who obtains a variable-rate loan from their banker could equally demand that the latter waive their margin, or even pay them a return, when the reference rate (Euribor, Libor CHF 3 months, etc.) becomes negative.
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