How far to go – and to remain – in the direction of highly expansionary monetary policy hinges on the balance of marginal benefits and costs of additional monetary easing and its expected evolution over time. This paper sketches a framework for assessing this balance and applies it to four...

In the run-up to the financial crisis, indebtedness of households and non-financial businesses rose to historically high levels in many OECD countries; gross debt of financial companies rose dramatically relative to GDP. Much of the debt accumulation appears to have been based on excessive...