She added similar measures and the "least-cost test" threshold should be further discussed in order to achieve a common European system, an idea shared with several central bank governors including Italy's Ignazio Visco.

Koenig cited the United States, "where the Federal deposit insurance plays a role not only of rescue but also of asset reallocation and reorganisation of the financial system."

A court ruling which overturned an EU decision over the rescue of Italy's Tercas bank in 2014 has opened the way for a discussion on the role of deposit guarantee schemes beyond their core function of protecting savers of collapsing banks.

Copyright Reuters, 2019