The legal foundation of the monetary system is the law of legal tender. The “legal tender” concept is used in models to describe almost anything except for what it really means in actual laws. Such errors prevent an accurate evaluation of the importance of this legal status. This note...

A government can promote the use of an object as the general medium of exchange by accepting it in tax payments. I prove this old claim in a dynamic model and compare the mechanism to convertibility. The government can often keep its favourite money in circulation even while increasing its...