Private Digital Currency and Monetary Sovereignty - 0 views
-
John Kiff on 28 Aug 21This paper by the Bank of Canada's Scott Hendry and Yu Zhu confirms the validity of central bank concerns that wide adoption of a private digital currency and decline in the use of central bank money may undermine monetary sovereignty. The analysis is based on a theoretical model in which fiat money and the digital currency differ in the types of transactions that they can serve, with the latter dominating in online transactions. Although the central bank wants to maintain the value of the fiat money by keeping low inflation in case households want to use the fiat money for transactions, a welfare-maximizing central bank would also want to encourage households to use e-money for transactions where e-money has an advantage. This can be achieved by raising inflation of fiat money since it is a substitute for e-money, and the incentive to raise inflation would dominate if the usage of fiat money was sufficently low. However, if the use of the central bank money becomes sufficiently low, this leads to high inflation and low welfare. The paper concludes that, to defend monetary sovereignty, the central bank should maintain or expand the use of central bank money, for example, by offering a central bank digital currency (CBDC) designed to be a perfect substitute for the private e-money.