Using a polynomial cointegration technique, this paper shows that the bilateral US current account balance with China has a U-shaped relationship with the life expectancy gap between the US and China. A narrowing gap initially increases the US deficit with China, but eventually, this increased US deficit falls with the further catching-up of Chinese life expectancy. The life expectancy gap between the two countries has been below the threshold level since 2013, and this demographic trend has the potential to improve the US deficit with China. This U-shaped relationship can be theoretically reproduced. A two-country overlapping generations model indicates that the effect of life expectancy is decomposed into four components: retirement savings, social security burden, the number of elderly workers, and the productivity of elderly workers. The total effect of foreign life expectancy on the home current account balance exhibits a sign change in the catching-up of foreign life expectancy.

Monetary policy in the USA affects borrowing costs for state and local governments, incentivizing municipal borrowing and spending, which in turn affects economic outcomes. Using municipal bond indices and transaction-level data, I find that responses to monetary policy are dampened relative to treasuries and heterogeneous across location and bond characteristics. In my baseline estimate, muni yields move 26 bp after a 100 bp monetary shock. To study implications for local fiscal policy, I model US localities as small open economies in a monetary union with independent fiscal agents. In a calibrated model, monetary transmission is significantly affected by municipal borrowing costs.

This paper sets up a small open economy model with habit persistence in consumption in which distortionary taxation is available in a flexible price environment. In open economy, the habit persistence in consumption aggravates the terms of trade externality, absent in closed economy, calling for more aggressive fiscal policy. While optimal labor income taxes are time-invariant in a closed economy with internal habit, they should be time-varying in an open economy to alleviate the terms of trade externality, even if the intertemporal elasticity of substitution equals the intratemporal elasticity of substitution. In a small open economy composed of households with habit persistence in consumption, households’ decision to gradually adjust their consumption and labor hours intensifies the undesirable terms of trade externality or the terms of trade channel. This generates a time-varying wedge between the efficiency conditions of the Ramsey planner and the market equilibrium conditions, calling for a time-varying taxation which takes into account the intertemporal elasticity of substitution and the intratemporal elasticity of substitution between home and foreign goods, in addition to the degree of habit and goods market distortion. The volatility of optimal tax rate increases with the degree of habit, whether households have external or internal habit. The volatility of tax rate shows an inverted U-shape in the degree of openness in the small open economy with habit. Finally, the optimal labor income tax rate moves countercyclically for low degree of intratemporal elasticity of substitution, while it moves procyclically for high degree of intratemporal elasticity of substitution.

Post the great financial crisis (GFC) of 2008–2009, there has been a surge in the macroeconomics literature on aggregate uncertainty. Although the recent literature has recognized the adverse real effects of global uncertainty shocks in emerging market economies (EMEs), the role of monetary policy in offsetting these adverse effects and their link with the exchange rates is not explored in the literature. We find that the currently followed interest rate rules (IRRs) under a flexible inflation-targeting regime are ineffective in stabilizing the domestic economy during periods of high global uncertainty in the EMEs. Using a small open economy new Keynesian DSGE model with Epstein–Zin preferences and second-moment demand shocks, we compare and propose alternate monetary policy rules that significantly reduce welfare losses. We find that the best monetary policy rule in terms of welfare depends on the nature of shock that is, first-moment or second-moment shock.

US output is more strongly correlated with the output of energy-exporting countries than with that of energy-importing countries. I first document this empirical finding, then construct a three-country model in which countries’ different energy production and trade structures are considered. The three countries are the USA (an energy importer), a non-US energy importer, and an energy exporter. Consistent with the empirical findings, the model produces a higher output correlation between the USA and the energy exporter than between the USA and the energy importer. A positive productivity shock in the USA, raising its output, leads to increases in energy prices and its import demand for energy. The increased energy prices adversely influence output in the energy importer, whereas the rise in US energy imports has positive effects on output in the energy exporter, enabling the correlation of US output with the exporter’s output to be higher.

Unless the global financial system is radically reformed – and the necessary reforms are looking increasingly unlikely to occur – it will continue to be conducive to financial crises. Government rhetoric and actions can often influence in desirable ways both the speculative actions that now determine the exchange rate and the effect of exchange rate movements on the domestic economy. Managing the exchange rate should start with Australian support for measures such as the Tobin tax that dampen speculation. In 2008 and 2009, exchange rate changes were helpful in reducing the impact of the global financial crisis on Australia, largely because of a very clear commitment by the Australian government to make preservation of jobs its top priority. In 2009, a rapid rise in the exchange rate was unhelpful. In the short run, little can be done about this, but in the longer run, it is possible to offset the adverse effects.

In the presence of frictions, the existing literature shows that currency substitution is detrimental for domestic aggregate stability. This paper singles out the role of currency substitution and shows that diversified currency holdings operate as an automatic stabilizer that mitigates belief-driven cyclical fluctuations in Farmer’s (1997) indeterminate monetary economy. When the foreign inflation rate is lower than the domestic inflation rate, the model’s steady state always displays saddle-path stability. Hence, equilibrium indeterminacy originally present in the domestic country is entirely removed in the presence of diversified currency holdings. When the foreign inflation rate is higher than the domestic inflation rate, then depending on the degrees of currency substitution and relative risk aversion, indeterminacy is either impossible or the requisite level of the foreign inflation rate for indeterminacy is too high to square with data. The stabilizing effect of diversified currency holdings on domestic aggregate stability is robust to whether domestic and foreign currencies display as Edgeworth substitutes or complements, or are additively separable in the household’s preferences.

There is no consensus on the existence of welfare gains from international monetary policy cooperation. This study adds to the debate by providing a new open macroeconomics model with incomplete exchange rate pass-through. We find that, from a global perspective, the welfare gains from international monetary policy cooperation arise with incomplete exchange rate pass-through. Furthermore, the country’s incentive for cooperation increases with its degree of exchange rate pass-through. Cooperation benefits small countries with high pass-through; however, it is disadvantageous to large countries with low pass-through. In addition, when there is in the absence of cooperation, fixed exchange rate regime is preferred for a country suffering from monetary uncertainty, particularly for small economies with high exchange rate pass-through.

This paper quantitatively examines the macroeconomic and welfare effects of macroprudential policies in open economies. We develop a small open economy dynamic stochastic general equilibrium (DSGE) model, where banks choose their funding sources (domestic vs. foreign deposits) and are subject to financial constraints. Our model predicts that banks reduce leverage in response to a macroprudential policy tightening, but increasingly rely on foreign funding. This endogenous shifts of funding composition significantly undermine the stabilizing effect and welfare gains of macroprudential policies. Our results also suggest macroprudential policies are less effective in financially more open economies, and optimal policy should take capital flows into consideration. Finally, we find empirical support for the model predictions in a group of developing and emerging economies.

This study detects a structural break in international consumer price index (CPI) inflation comovement. We estimate the dynamic common factor models with unknown breakpoints of cross-country inflation rates and global price index of all commodities. We identify two global factors from the models: a commodity global factor and a noncommodity global factor. The former is a common factor between national inflation rates and commodity price index growth; the latter is a common factor among national inflation rates. The estimation of 29 countries’ quarterly CPI inflation data from 2001:Q1 to 2018:Q2 shows a one-time break in cross-country inflation dynamics in 2008:Q4. Thereafter, the importance of global factors in explaining the national inflation rates is remarkably increased. Furthermore, the increased global inflation synchronization is mainly driven by the larger role of the noncommodity global factor rather than that of the commodity global factor.

This article fills a gap in the literature by quantifying impacts of fossil fuel subsidy reform on trade (inflow and outflow) in an oil-producing, “almost small”, economy, using Kuwait as an example. It employs a two-region economy-wide model with oligopoly behaviour in a general equilibrium framework. The model embodies unique elements of Kuwait's economic structure, idiosyncratic rigidities, and distortions, including oligopolistic industrial structure and labour markets. Simulations show that energy subsidies have minimal effects on trade and on non-energy exports, largely due to the pervasiveness of oligopolies that sustain large markups and their collusive pricing. Reforming energy subsidies generates higher pro-trade effects if implemented during low (not high) oil prices because its negative effects are partially offset by efficiency gains and reduction in oligopoly markups. Yet, contrary to claims by proponents of reforms, these effects remain largely constrained unless appropriate incentives are introduced. These results have important policy implications. In developing oil-exporting economies with pervasive oligopolies, microeconomic reform can be a channel through which to achieve pro-trade effects of energy subsidy reform. Further, benefits beyond export expansion, such as higher economic efficiency, could be better motivators of energy subsidy reform in oil economies.

We analyse the possible optimality of the path followed by the current account of the Spanish economy over a very long period of almost 170 years (1850-2016), according to the intertemporal approach to the current account and using a present-value model. In particular, from the estimation of a bivariate vector autoregression model for the current account, we attempt to assess the extent to which the latter has been used to smooth private consumption over time in the presence of temporary shocks that the economy might suffer. In general, evidence does not seem to be particularly favourable to the validity of the model over the period of analysis.

The Institute is a world leader in macroeconomic modelling and forecasting. It has produced quarterly economic forecasts for around sixty years, supported by macroeconomic models. The aim of the original builders of macroeconomic models was to transform understanding of how economies worked and use that knowledge to improve economic policy. In the early years, when computers were rare, macroeconomic modelling was a new frontier and Institute economists were among the first to produce a working model of the UK economy. It is remarkable how quickly models were being used to produce forecasts, assess policy and influence the international macroeconomic research agenda. The models built at the Institute were mainstream in the sense that they followed the contents of standard macroeconomic textbooks, developed with the subject, and fitted the facts as they were known at the time. There were continual improvements in understanding as the subject developed in response to new ideas and developments in the global economy. This article celebrates the development of macroeconomic modelling at the Institute and the contribution it has made to public life.

We modify NiGEM in order to study the macroeconomic effects of imposing import tariffs in the US under different assumptions regarding the long-run price setting behaviour of exporters. Overall, the macroeconomic implications in the US resemble the impact of a cost shock or adverse supply shock as prices increase while output declines. Due to exchange rate movements and changes in the prices of traded goods, prices and output in other economies tend to move in the same direction. We demonstrate that the size and persistence of the macroeconomic impact following the introduction of new tariffs critically hinge upon the specific assumptions underlying the behaviour of export prices. If foreign exporters are concerned about their net-of-tariff prices, there will be little adjustment after the initial surge in tariff-inclusive export prices. As a result, the adverse macroeconomic impact will be large and persistent both in the US and abroad. While additional government spending financed by tariff revenues could mitigate the adverse impact on the protectionist economy in the short run, retaliation by its trading partners would worsen the outcome. Our simulations also raise doubts about the ability of protectionist measures to rein in global imbalances.

This paper introduces a special issue of the Review on how the National Institute Global Econometric Model (NiGEM) is being used to navigate uncertain times. NiGEM is the leading global macroeconomic model, used by both policy-makers and the private sector across the globe for economic forecasting, scenario building and stress testing. The paper summarises the main features of NiGEM and describes some standard model simulations to illustrate how the model responds to monetary, fiscal and technology shocks.

Exchange rate fluctuations have been particularly large since mid-2014, displaying divergent developments across the period. The nominal effective exchange rate of the dollar has appreciated by 15 per cent since June 2014, masking a 25 per cent appreciation to December 2016 followed by a depreciation of 8 per cent. Changes in the euro have turned positive after being negative. This article attempts to measure the impact of currency changes on domestic activity, accounting for the source of fluctuations. More specifically, by using the multi-country structural model NiGEM, we show that different types of exchange rate shocks can have different macroeconomic outcomes. Focusing on the period from January 2017 to February 2018, we show that the depreciation of the dollar, stemming mostly from changes in sentiment in foreign exchange markets, would in fact have been detrimental to US growth. A weaker currency, in this particular case, turned out to be no recipe for stronger growth. Similarly, the appreciation of the euro, triggered by a fall in the risk premium of the currency, may have been positive for growth. There are caveats to the exercise, but the results are nonetheless consistent with previous research pointing to the importance of the nature of the exchange rate shocks in estimating their impact on prices and growth.

The Euro Area recommendations endorsed by the European Council in 2016 called for a differentiation of the fiscal effort by individual Member States, taking into account spillovers across Euro Area countries. This article shows model-based simulations of an increase in public investment in Germany and the Netherlands and their spillovers to the rest of the Euro Area. While spillovers in a monetary union may be small when monetary policy reacts by raising interest rates, when rates are kept constant and the stimulus is accommodated, spillovers can be sizeable. An increase in (productive) spending in Germany and the Netherlands can boost GDP in these countries and also have significant positive spillovers on the rest of EA GDP, while the effects on current accounts are likely to be small. Effects can be even larger when investment is directed to the most productive projects. With low borrowing costs at present, the increase in government debt for surplus countries will be modest, while there could be an improvement in debt ratios in the rest of the Euro Area.

This article explores the similarities, differences, and implications from the 1970s-1980s experience for the macroeconomic dynamic that may arise from the 2008 price spike and subsequent recession. Role of monetary policy (deviations from Taylor rule) is assessed. This is an argument that has not been too prominent in public discourse about causes of the financial crisis or the policies undertaken to restore stability to financial markets and avoid an even deeper downturn than occurred. The “misery index” is compared across the past and recent macroeconomic events. Effects on agriculture of exchange rates are reviewed, effects dependent on currency values and interest rates that can change quickly and in unexpected ways.

This paper addresses the role of markup variations in the transmission process of cross-sectoral productivity differential shocks and government spending shocks to the relative price of nontradables. The Balassa-Samuelson model based on frictionless goods markets predicts that a rise in the sectoral productivity ratio by 1% raises the relative price by 1% while government spending changes leave the relative price unaffected. Using panel cointegration and unit root tests applied to a panel of fifteen OECD economies, our empirical evidence does not support these implications. We find that a rise in relative productivity by 1% raises the relative price of nontradables by only 0.70% and that an increase in government spending by 1% of GDP drives up the relative price by around 1%. This paper shows that these items of evidence can be successfully explained by a two-sector open economy model in which variations in the composition of demand for nontradables give rise to endogenous changes in the markups.

This paper reviews the impact of financial globalisation on credit dynamics. In particular, it argues that financial globalisation fundamentally alters credit demand and credit supply, since borrowers and lenders have foreign options as well as domestic options in terms of the selection of projects and funding sources. The rapid accumulation of large cross-border debt positions was a central feature in the boom phase of the European credit cycle during 2003–8 and has influenced the nature of the post-2008 financial crisis. Finally, the paper considers the range of policy reforms needed to improve macro-financial stability under international financial integration.