This paper incorporates a distortionary tax into the microfoundations of money framework and revisits the optimum quantity of money. An optimal policy may consist of both a positive tax rate and a positive nominal interest rate: if the buyer’s surplus share is inefficiently small, the...

This paper incorporates a distortionary tax into a microfoundations of money framework and revisits the optimum quantity of money. The money constraint in the decentralized market plays a key role in the optimal policy. Only if the constraint is binding can fiscal policy alter the agents'...