A Quantitative Microfounded Model For The Integrated Policy Framework

We develop a microfounded New Keynesian model to analyze monetary policy and financial stability issues in open economies with financial fragilities and weakly anchored inflation expectations. We show that foreign exchange intervention (FXI) and capital flow management tools (CFMs) can improve monetary policy tradeoffs under some conditions, including by reducing the need for procyclical tightening in response to capital outflow pressures. Moreover, they can be used in a preemptive way to reduce the risk of a “sudden stop” through curbing a buildup in leverage. While these tools can materially improve welfare, mainly by dampening inefficient fluctuations in risk premia, our analysis also highlights potential limitations, including the possibility that their deployment may forestall needed adjustment in the external balance. Finally, our results also emphasize the power of FXIs to provide domestic stimulus in a liquidity trap.

Many central banks have relied on a range of policy tools, including foreign exchange intervention (FXI) and capital flow management tools (CFMs), to mitigate the effects of volatile capital flows on their economies. We develop an empirically-oriented New Keynesian model to evaluate and quantify how using multiple policy tools can potentially improve monetary policy tradeoffs. Our model embeds nonlinear balance sheet channels and includes a range of empirically-relevant frictions. We show that FXI and CFMs may improve policy tradeoffs under certain conditions, especially for economies with less well-anchored inflation expectations, substantial foreign currency mismatch, and that are more vulnerable to shocks likely to induce capital outflows and exchange rate pressures.

In the Mundell-Fleming framework, standard monetary policy and exchange rate flexibility fully insulate economies from shocks. However, that framework abstracts from many real world imperfections, and countries often resort to unconventional policies to cope with shocks, such as COVID-19. This paper develops a model of optimal monetary policy, capital controls, foreign exchange intervention, and macroprudential policy. It incorporates many shocks and allows countries to differ across the currency of trade invoicing, degree of currency mismatches, tightness of external and domestic borrowing constraints, and depth of foreign exchange markets. The analysis maps these shocks and country characteristics to optimal policies, and yields several principles. If an additional instrument becomes available, it should not necessarily be deployed because it may not be the right tool to address the imperfection at hand. The use of a new instrument can lead to more or less use of others as instruments interact in non-trivial ways.

This paper jointly analyzes the optimal conduct of monetary policy, foreign exchange intervention, fiscal policy, macroprudential policy, and capital flow management. This policy analysis is based on an estimated medium-scale dynamic stochastic general equilibrium (DSGE) model of the world economy, featuring a range of nominal and real rigidities, extensive macrofinancial linkages with endogenous risk, and diverse spillover transmission channels. In the pursuit of inflation and output stabilization objectives, it is optimal to adjust all policies in response to domestic and global financial cycle upturns and downturns when feasible—including foreign exchange intervention and capital flow management under some conditions—to widely varying degrees depending on the structural characteristics of the economy. The framework is applied empirically to four small open advanced and emerging market economies.

We estimate a New Keynesian small open economy model which allows for foreign exchange (FX) market frictions and a potential role for FX interventions for a large set of emerging market economies (EMEs) and some inflation targeting (IT) advanced economy (AE) countries serving as a control group. Next, we use the estimated model to examine the empirical support for the view that interest rate policy may not be sufficient to stabilize output and inflation following capital outflow shocks, and the extent to which FX interventions (FXI) can improve policy tradeoffs. Our results reveal significant structural differences between AEs and EMEs—in particular FX market depth—leading to different transmission of capital outflow shocks which justifies occasional use of FXI in some EMEs in certain situations. Our analysis also highlights the critical importance of accounting for the endogeneity of FXI behavior when assessing FX market depth and policy tradeoffs associated with volatile capital flows in past episodes.

Against the background of a strong economic performance over the last quarter of a century, Peru has been hit by multiple shocks in the last several years. Adequate policies and very strong policy frameworks have made the economy resilient. Following a steep decline in 2020 at the outset of the pandemic and a rapid recovery in 2021, growth slowed significantly in 2022 as the policy stimulus was withdrawn and external and financial conditions deteriorated. Recent political developments suggest that the new government needs to work across the political spectrum to create broader political consensus, reduce uncertainty, ease social tensions, and boost growth.

Philippines: Selected Issues