The decision means that Swedish commercial banks will be able to take out loans from the central bank at a negative interest rate. When the loans are due, banks will pay back less than they borrowed.
Does that only sound crazy to me or anyone else? I've already accepted the ECB's negative interest (i. e., fees) when banks park money at it. But at least a loan is still at
positive 0.05%. So if I'm a Swedish bank, I'll just get a billion in cash, put it in my vault, pay back less and profit? How's that ever going to work out?