As doubts grow about the effectiveness of quantitative easing, monetary policymakers are leaning towards cutting interest rates further into negative territory as their preferred mode of easing. But this begs crucial and untested questions of whether banks will be willing to pass on the cost to their retail depositors, and of how depositors might react if they did so. This column notes a recently published survey in which a large majority of respondents said that they would withdraw their savings, and yet few would spend more. Although it could be argued that savers might react less negatively when confronted with the reality of negative rates, their powerful aversion to the prospect raises troubling questions about the potential effectiveness of this policy tool.