Financial integration is a phenomenon in which financial markets in neighboring, regional and/or global economies are closely linked together. Various forms of actual financial integration include: Information sharing among financial institutions; sharing of best practices among financial institutions; sharing of cutting edge technologies (through licensing) among financial institutions; firms borrow and raise funds directly in the international capital markets; investors directly invest in the international capital markets; newly engineered financial products are domestically innovated and originated then sold and bought in the international capital markets; rapid adaption/copycat of newly engineered financial products among financial institutions in different economies; cross-border capital flows; and foreign participation in the domestic financial markets.
Because of financial market imperfections, financial integration in neighboring, regional and/or global economies is therefore imperfect. For example, the imperfect financial integration can stem from the inequality of the marginal rate of substitutions of different agents. In addition to financial market imperfections, legal restrictions can also hinder financial integration. Therefore, financial integration can also be achieved from the elimination of restrictions pertaining to cross-border financial operations to allow
(a) Financial institutions to operate freely
(b) Permit businesses to directly raise funds or borrow and
(c) Equity and bond investors to invest across the state line with fewer restrictions.
However, it is important to note that many of the legal restrictions exist because of the market imperfections that hinder financial integration. Legal restrictions are sometimes second-best devices for dealing with the market imperfections that limit financial integration. Consequently, removing the legal restrictions can make the world economy become worse off. In addition, financial integration of neighboring, regional and/or global economies can take place through a formal international treaty which the governing bodies of these economies agree to cooperate to address regional and/or global financial disturbances through regulatory and policy responses. The extent to which financial integration is measured includes gross capital flows, stocks of foreign assets and liabilities, degree of co-movement of stock returns, degree of dispersion of worldwide real interest rates, and financial openness. Also there are views that not gross capital flows (capital inflow plus capital outflow), but bilateral capital flows determine financial integration of a country, which disregards capital surplus and capital deficit amounts. For instance, a county with only capital inflow and no capital outflow will be considered not financially integrated.
Benefits of financial integration include efficient capital allocation, better governance, higher investment and growth, and risk-sharing. Levine (2001) shows that financial integration helps strengthen domestic financial sector allowing for more efficient capital allocation and greater investment and growth opportunities. As a result of financial integration, efficiency gains can also be generated among domestics firms because they have to compete directly with foreign rivals; this competition can lead to better corporate governance (Kose et al., 2006). If having access to a broader base of capital is a major engine for economic growth, then financial integration is one of the solutions because it facilitates flows of capital from developed economies with rich capital to developing economies with limited capital. These capital inflows can significantly reduce the cost of capital in capital-poor economies leading to higher investment (Kose et al., 2006). Likewise, financial integration can help capital-poor countries diversify away from their production bases that mostly depend on agricultural activities or extractions of natural resources; this diversification should reduce macroeconomic volatility (Kose et al., 2006). Financial integration can also help predict consumption volatility because consumers are risk-averse who have a desire to use financial markets as the insurance for their income risk, so the impact of temporary idiosyncratic shocks to income growth on consumption growth can be softened. Stronger comoverment of consumption growth across the globe can also be a results of financial integration (Kose et al., 2006). Furthermore, financial integration can also provide great benefits for international risk-sharing.
Financial integration can also have adverse effects. For example, a higher degree of financial integration can generate a severe financial contagion in neighboring, regional and/or global economies. In addition, Boyd and Smith (1992) argue that capital outflows can journey from capital-poor countries with weak institutions and policies to capital-rich countries with higher institutional quality and sound policies. Consequently, financial integration actually hurts capital-scarce countries with poor institutional quality and lousy policies.
During the past two decades, there has been a significant increase in financial integration; this increased financial integration generates a great deal of cross-border capital flows among industrial nations and between industrial and developing countries. In addition, this increase in financial integration pulls global financial markets closer together and escalates the presence of foreign financial institutions across the globe. With rapid capital flows around the world, the currency and financial crises in the late 1980s and 1990s were inevitable. Consequently, developing countries that welcomed excessive capital flows were more vulnerable to these financial disturbances than industrial nations. It is widely believed that these developing economies were much more adversely impacted as well. Because of these recent financial crises, there has been a heated debate among both academics and practitioners concerning the costs and benefits of financial integration.
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