This paper examines the role of the precautionary demand for liquidity and the interest on reserves as two potential determinants of the deposits channel that can help explain the role of monetary policy, particularly at the near zero-bound. At high levels of precautionary liquidity hoarding the optimal policy response of a Taylor rule is shown to indicate a zero weight on inflation. This is a determinate outcome, despite the violation of the Taylor Principle, because of the effect that the demand for liquidity has on the deposit rate which determines the intertemporal choices of households. Similarly, through its effect on the deposits channel the interest on reserves can act as the main monetary policy tool that can provide determinacy and replace the Taylor rule. This result holds at the zero-bound and it is independent of precautionary demand for liquidity, or fiscal theory of the price level properties.