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Title: Maintaining Central-Bank Financial Stability under New-Style Central Banking

Author(s): Robert E Hall and Ricardo Reis

Publication Date: July 2015

Keyword(s): central bank capital, central bank solvency, monetary policy and quantitative easing

Programme Area(s): Monetary Economics and Fluctuations

Abstract: Since 2008, the central banks of advanced countries have borrowed trillions of dollars from their commercial banks in the form of interest-paying reserves and invested the proceeds in portfolios of risky assets. We investigate how this new style of central banking a ects central banks' solvency. A central bank is insolvent if its requirement to pay dividends to its government exceeds its income by enough to cause an unending upward drift in its debts to commercial banks. We consider three sources of risk to central banks: interest-rate risk (the Federal Reserve), default risk (the European Central Bank), and exchange-rate risk (central banks of small open economies). We nd that a central bank that pays dividends equal to a standard concept of net income will always be solvent|its reserve obligations will not explode. In some circumstances, the dividend will be negative, meaning that the government is making a payment to the bank. If the charter does not provide for payments in that direction, then reserves will tend to grow more in crises than they shrink in normal times. To prevent this buildup, the charter needs to provide for makeup reductions in payments from the bank to the government. We compute measures of the nancial strength of central banks, and discuss how di erent institutions interact with quantitative easing policies to put these banks in less or more danger of instability. We conclude that the risks to nancial stability are real in theory, but remote in practice today. 

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Bibliographic Reference

Hall, R and Reis, R. 2015. 'Maintaining Central-Bank Financial Stability under New-Style Central Banking'. London, Centre for Economic Policy Research. https://cepr.org/active/publications/discussion_papers/dp.php?dpno=10741