Riksbank paper shows importance of modelling bank costs

Inefficiency can mean banks have a negative impact on welfare

Photo by David Lundberg
Sveriges Riksbank. Photo: David Lundberg

Models should take account of the costs associated with banking activity, a working paper published on October 31 by Sveriges Riksbank finds.

Paola Boel and Gabriele Camera set out a model in which banks must pay for the labour to run their operations, which creates a cost to lending and generates a bid/ask spread for interest rates, as one would expect.

Traditional, frictionless models tend to imply banking activity boosts aggregate welfare by mobilising deposits that would otherwise be idle

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