Cashing In: How to make negative interest rates work — International Monetary Fund — “In a cashless world, there would be no lower bound on interest rates. A central bank could reduce the policy rate from, say, 2% percent to -4% to counter a severe recession… Without cash, depositors would have to pay the negative interest rate to keep their money with the bank, making consumption and investment more attractive. This would jolt lending, boost demand, and stimulate the economy.”