Tuesday, July 10, 2007

Balance Sheet Effects

Well, following closely the Hungarian economic situation, it is clear that this topic is about to come back into fashion. so I am compiling a quick reading list set of notes.

Do Balance-Sheet Effects Matter for Brazil
? Felipe Farah Schwartzman, May 2003

The past ten years have seen a number of currency crises, typically followed by a sharp drop in output in the countries involved. An explanation advanced for both the crisis and the recession is that firms in these countries had a large amount of debt indexed in foreign currency (Krugman, 1999). The exchange rate devaluation left the firms insolvent, reducing credit and production in the economy. Apart from crisis, balance-sheet effects have been advanced as an explanation for the “fear of floating” detected by Calvo and Reinhardt (2000) in developing economies in normal times.

Krugman, P. (1999), “Balance Sheets, the Transfer Problem and Financial Crisis,” in: International Finance and Financial Crises, P. Isard, A. Razin and A. Rose (eds.)

For the founding fathers of currency-crisis theory - a fraternity among whom Bob Flood holds a place of high honor - the emerging market crises of 1997-? inspire both a sense of vindication and a sense of humility. On one side, the number and severity of these crises has demonstrated in a devastatingly thorough way the importance of the subject; in a world of high capital mobility, it is now clear, the threat of speculative attack becomes a central issue - indeed, for some countries the central issue - of macroeconomic policy. On the other side, even a casual look at recent events reveals the inadequacy of existing crisis models. True, the Asian crisis has settled some disputes - as I will argue below, it decisively resolves the argument between “fundamentalist” and “self-fulfilling” crisis stories. (I was wrong; Maury Obstfeld was right). But it has also raised new questions.

One way to describe the problem is to think in terms of Barry Eichengreen’s celebrated distinction between “first-generation” and “second-generation” crisis models. First-generation models, exemplified by Krugman (1979) and the much cleaner paper by Flood and Garber (1984), in effect explain crises as the product of budget deficits: it is the ultimately uncontrollable need of the government for seignorage to cover its deficit that ensures the eventual collapse of a fixed exchange rate, and the efforts of investors to avoid suffering capital losses (or to achieve capital gains) when that collapse occurs provoke a speculative attack when foreign exchange reserves fall below a critical level.

Second-generation models, exemplified by Obstfeld (1994), instead explain crises as the result of a conflict between a fixed exchange rate and the desire to pursue a more expansionary monetary policy; when investors begin to suspect that the government will choose to let the parity go, the resulting pressure on interest rates can itself push the government over the edge. Both first- and second-generation models have considerable relevance to particular crises in the 1990s - for example, the Russian crisis of 1998 was evidently driven in the first instance by the (correct) perception that the weak government was about to be forced to finance itself via the printing press, while the sterling crisis of 1992 was equally evidently driven by the perception that the UK government would under pressure choose domestic employment over exchange stability.

In the major crisis countries of Asia, however, neither of these stories seems to have much relevance. By conventional fiscal measures the governments of the afflicted economies were in quite good shape at the beginning of 1997; while growth had slowed and some signs of excess capacity appeared in 1996, none of them faced the kind of clear tradeoff between employment and exchange stability that Britain had faced 5 years earlier (and if depreciation was intended to allow expansionary policies, it rather conspicuously failed!) Clearly something else was at work; we badly need a “third-generation” crisis model both to make sense of the recent crises and to help warn of crises to come.

In any case, this paper sketches out yet another candidate for third-generation crisis modeling, one that emphasizes two factors that have been omitted from formal models to date: the role of companies’ balance sheets in determining their ability to invest, and that of capital flows in affecting the real exchange rate. The model is at this point quite raw, with several loose ends hanging. However, it seems to me to tell a story with a more realistic “feel” than earlier efforts, my own included. It also sheds some light on the policy dilemmas faced by the IMF and its clients in the last two years.

Balance Sheet Effects, Bailout Guarantees and Financial Crises


This paper provides a model of boom-bust episodes in middle income countries. It features balance of- payments crises that are preceded by lending booms and real appreciation, and followed by recessions and sharp contractions of credit. As in the data, the non-tradables sector accounts for most of the volatility in output and credit. The model is based on sectoral asymmetries in corporate finance. Currency mismatch and borrowing constraints arise endogenously. Their interaction gives rise to self-fulfilling crises.

In the last two decades, many middle-income countries have experienced boom-bust episodes centered around balance-of-payments crises. There is now a well-known set of stylized facts. The typical episode began with a lending boom and an appreciation of the real exchange rate. In the crisis that eventually ended the boom, a real depreciation coincided with widespread defaults by the domestic private sector on unhedged foreign-currency-denominated debt. The typical crisis came as a surprise to financial markets, and with hindsight it is not possible to pinpoint a large “fundamental” shock as an obvious trigger. After the crisis, foreign lenders were often bailed out. However, domestic credit fell dramatically and recovered much more slowly than output.

This paper proposes a theory of boom-bust episodes that emphasizes sectoral asymmetries in corporate finance. It is motivated by an additional set of facts that has received little attention in the literature: the tradables (T-) and nontradables (N-) sectors fared quite differently in most boom-bust episodes. While the N-sector was typically growing faster than the T-sector during a boom, it fell harder during the crisis and took longer to recover afterwards. Moreover, most of the guaranteed credit extended during the boom went to the N-sector, and most bad debt later surfaced there. Our analysis is based on two key assumptions that are motivated by the institutional environment of middle income countries. First, N-sector firms are run by managers who issue debt, but cannot commit to repay. In contrast, T-sector firms have access to perfect financial markets. Second, there are systemic bailout guarantees: lenders are bailed out if a critical mass of borrowers defaults.

A Balance Sheet Approach to Financial Crisis
Mark Allen, Christoph Rosenberg, Christian Keller, Brad Setser, and Nouriel Roubini

The paper lays out an analytical framework for understanding crises in emerging markets based on examination of stock variables in the aggregate balance sheet of a country and the balance sheets of its main sectors (assets and liabilities). It focuses on the risks created by maturity, currency, and capital structure mismatches. This framework draws attention to the vulnerabilities created by debts among residents, particularly those denominated in foreign currency, and it helps to explain how problems in one sector can spill over into other sectors, eventually triggering an external balance of payments crisis. The paper also discusses the potential of macroeconomic policies and official intervention to mitigate the cost of such a crisis.

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