Optimal Reserves In Financially Closed Economies

Financially closed economies insure themselves against current-account shocks using international reserves. We characterize the optimal management of reserves using an open-economy model of precautionary savings and emphasize several results. First, the welfare-based opportunity cost of reserves differs from the measures often used by practitioners. Second, under plausible calibrations the model is consistent with the rule of thumb that reserves should be close to three months of imports. Third, simple linear rules can capture most of the welfare gains from optimal reserve management. Fourth, policymakers should place more emphasis on how to use reserves in response to shocks than on the reserve target itself.

We present a model of the optimal level of international reserves for a small open economy that is vulnerable to sudden stops in capital flows. Reserves allow the country to smooth domestic absorption in response to sudden stops, but yield a lower return than the interest rate on the country's long-term debt. We derive a formula for the optimal level of reserves, and show that plausible calibrations can explain reserves of the order of magnitude observed in many emerging market countries. However, the recent buildup of reserves in Asia seems in excess of what would be implied by an insurance motive against sudden stops.

operational guidance to staff on reserve adequacy discussions in the IMF’s bilateral and multilateral surveillance. It is based on the views presented in the policy paper Assessing Reserve Adequacy—Specific Proposals and the related Board discussion. The note addresses key issues related to Staff’s advice on the assessment of the adequacy of reserves and related items, including answering the following questions: What is the expected coverage of reserve issues at different stages of the bilateral surveillance process (Policy Note, mission, and Staff Report)? Which reserve adequacy tools best fit different economies based on their financial maturity, economic flexibility, and market access? What do possible reserve needs in mature markets relate to, and how can their adequacy be assessed? How can reserve adequacy discussions for emerging and deepening financial markets be tailored and applied to better evaluate reserve levels in: (i) commodity-intensive economies; (ii) countries with capital flow management measures (CFMs); and (iii) partially and fully dollarized economies? What reserve adequacy considerations hold for countries with limited access to capital markets? How can metrics for these economies be tailored to evaluate their reserve needs? How should potential drains on reserves be covered? What are the various measures of the cost of reserves for countries with and without market access?

Why do countries hold so much international reserves? Global reserve holdings (excluding gold) were equivalent to 17 weeks of imports at the end of 1999. That is almost double what they were at the end of 1960 and about 20 percent higher than they were at the start of the 1990s. In this paper we study countries’ reserve holdings in light of both the increased financial volatility experienced in the last decade and diminished adherence to fixed exchange rates. We find that buffer-stock reserve models work about as well in the modern floating-rate period as they did during the Bretton Woods regime. During both periods, however, the models’ fundamentals explain only a small portion (10-15 percent) of reserves volatility.

I provide an integrated analysis of monetary and macroprudential policies in a model economy featuring a financial friction and a nominal wage rigidity. In this set-up, the monetary authority faces a trade-off between macroeconomic and financial stability: While expansionary counter-cyclical monetary policy prevents involuntary unemployment, it also amplifies an inefficient reallocation of capital across sectors. The main contribution of the analysis is threefold: First it highlights a novel channel through which monetary policy can impact financial stability. Second, it shows that, by itself, monetary policy can significantly mitigate the wedge between the constrained efficient and the competitive allocation. Third, regardless of the availability of macroprudential tools, stabilizing demand is usually not optimal for monetary policy.

In response to the Global Financial Crisis and the COVID-19 pandemic, central banks have used all available instruments in their monetary policy tool-kit to avoid financial market disruptions and a collapse in real economic activities. These actions have expanded the size of their balance sheets and altered the composition of the asset-side. This edited book highlights how these assets are managed, providing an intellectual and practical contribution to an under-researched field of central bank responsibilities. It first reviews the sources and uses of domestic and international assets and how they complement—or possibly conflict with—the implementation of monetary policy goals. Next, the book examines the asset management mandate in a balance sheet context before turning to the investment decision-making process from strategic and tactical asset allocation to investment strategies, risk management, governance, reporting and control. Finally, it presents new developments in the field of managing assets at central banks. The individual chapters are written by central bankers, academics, and representatives from International Financial Institutions, each representing a particular aspect of the asset management practice. Practical and powerful insights from a hall of fame of investors, central bankers and scholars, are packed into this one volume. If you could have only one book on central bank asset management, this would be it. —Peter R. Fisher, Clinical Professor, Tuck School of Business at Dartmouth Jacob Bjorheim draws on his long experience in sovereign asset management to pull together a rich collection of insights from a broad range of expertise. Asset management at central banks has evolved and expanded considerably over the past decade. This book is a timely source of information and guidance. —Guy Debelle, Deputy Governor, Reserve Bank of Australia Central bank balance sheets have grown at a tremendous pace over the last decade and a half. Drawing on contributions from scholars and experienced central bankers from around the world, this timely and insightful book sheds light on how central banks are, and should be, managing their growing balance sheets. —Kjell G. Nyborg, Chaired Professor of Finance, University of Zurich, Author of Collateral Frameworks: The Open Secret of Central Banks Central banks and monetary authorities are charged with, and being held accountable for, managing portfolios of foreign currency assets of unprecedented size. The essays in this admirable book, written by some of the worlds most highly experienced officials, cover the full range of why and how this is currently being done and how new developments are affecting old practices. Interesting conceptually and immensely useful practically. —William White, Senior Fellow at the C.D. Howe Institute, former Head of the Monetary and Economic Department with the Bank for International Settlements (BIS) and chairman of the Economic and Development Review Committee at the OECD An excellent and timely review of modern international reserve management, which ought to be read by everyone working with, or simply interested in, international asset management and finance as well as monetary and economic policy. The spectrum of authors is broad and their combined insight is very valuable. —Tom A. Fearnley, Investment Director, Norwegian Ministry of Finance With “Asset Management at Central Banks and Monetary Authorities”, Jacob Bjorheim has achieved an editorial tour de force. The book assembles the insightful views of the leading experts in the field, both from an academic and practitioners’ perspective. It bridges the gap between the macroeconomics of central banks and the financial management of their reserves. A must read to understand how central banks are special in the group of institutional investors. —Eric Bouyé, Head of Asset Allocation and Quantitative Strategies, Treasury Department, The World Bank The balance sheet is a large and important toolbox for any central bank and specifically the foreign exchange reserves constitute one the more powerful of these tools. This book provides excellent insight in the various perspectives of managing reserves at a central bank. —Heidi Elmér, Director of Markets Department, Severiges Riksbank The world of international reserves has changed since the global financial crisis. In this volume, Jacob Bjorheim has assembled a stellar cast of experts to explain how and what that means for reserves management. With chapter authors like Andrew Ang, Jennifer Johnson-Calari, Robert McCauley, Ravi Menon, Simon Potter and Philip Turner, it is a book that every reserve manager must read. —Eli Remolona, Professor of Finance and Director of Central Banking, Asia School of Business in collaboration with MIT Sloan Jacob Bjorheim has succeeded in bringing together a first-class team of experts, and organising their contributions in an articulated journey from the central banks’ policy mandate to their asset management practices. An indispensable post-crisis update of the subject and a a required reading for anyone professionally involved with central bank’s asset management, or simply curious about a topic benefitting otherwise from limited research. —Louis de Montpellier, Former Global Head, Official Institutions Group, SSGA, and former Deputy Head, Banking Department, Bank for International Settlements (BIS), Basel At last, a book that shares with a wider audience, deep insight in a unique, challenging and ethical approach of asset management developed and implemented in the secretive world of central banks. If you wonder how to manage funds that stand ready for use at short notice in times of stress then this book is for you. Two features make it such a valuable read and a must-have reference: First, the very comprehensive list of themes covered from a rich diversity of angles. Second, the very impressive list of prominent institutions and authors that have contributed and shared their analysis and practical approaches of the issues presented. What is better than to get the information directly from first-hand practitioners, experts and managers themselves in their own words? —Jean-Pierre Matt, Former Head of Financial Analysis at the Bank for International Settlements (BIS) and founder of Quanteis This book holds the promise to become the go-to guide for anyone wishing to learn more about the management of official foreign exchange reserves. Central bankers in particular, but also those providing services to central banks, will find benefit from the broad scope in subject matter and varied perspectives being presented. I am yet to see a compendium on official reserve management with similar reach in subject matter. —Leon Myburgh, Former Head Financial Markets Department, South African Reserve Bank (SARB), Pretoria This is an immensely timely book at a time when central bank operations, and their balance sheets, remain “larger for longer”. Following the Financial Crisis 10 years ago, and with the Covid-19 Recession about to break, central bank balance sheets are at the forefront of the authorities’ response to economic issues as never before. Yet the management of their now large-scale assets remains a little known and little studied area. The authors of this book combine extensive technical and practical experience, and their observations will fill an important gap in the literature at a critical time. —Freyr Hermannsson, Former Head of Treasury, Central Bank of Iceland, Reykjavík

This book explores current digitalization issues in finance and accounting with particular focus on emerging and transitioning markets. It features models, empirical studies and cases studies on topics such as Fintech, blockchain technology, financing renewable energy, and XBRL usage from sectors such health care, pharmacology, transportation, and education. Such a complex view of current economic phenomena makes the volume attractive not only for academia, but also for regulators and policy-makers, when deliberating the potential outcome of competing regulatory mechanisms.