This is good news. But political leaders and policymakers must stay mindful that the present economic momentum reflects a confluence of factors that is unlikely to last for long. The global financial crisis may seem firmly behind us, but without prompt action to address structural growth impediments, enhance the inclusiveness of growth, and build policy buffers and resilience, the next downturn will come sooner and be harder to fight, said the report.
Near-term prospects
Looking first at where we are now, how do we see the world economy in the near term?
The primary sources of GDP acceleration so far have been in Europe and Asia, with improved performance also in the United States, Canada, and some large emerging markets, notably Brazil and Russia, both of which shrank in 2016, and Turkey. Much of this momentum will carry through into the near term. The recent U.S. tax legislation will contribute noticeably to U.S. growth over the next few years, largely because of the temporary exceptional investment incentives that it offers. This short-term growth boost will have positive, albeit short-lived, output spillovers for U.S. trade partners, but will also likely widen the U.S. current account deficit, strengthen the dollar, and affect international investment flows.
Trade is again growing faster than global income, driven in part by higher global investment, and commodity prices have moved up, benefiting those countries that depend on commodity exports.
Even as economies return to full employment, inflation pressures remain contained and nominal wage growth is subdued. Financial conditions are quite easy, with booming equity markets, low long-term government borrowing costs, compressed corporate spreads, and attractive borrowing terms for emerging market and developing economies.
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Explaining the upturn
The current upturn did not arise by chance. It began to take hold in mid-2016 and owes much to accommodative macroeconomic policies, which supported market sentiment and hastened natural healing processes.
Every government should be asking itself three questions today. First, how can we raise economic efficiency and output levels over the longer term? Second, how can we support resilience and inclusiveness while reducing the likelihood that the current upswing ends in an abrupt slowdown or even a new crisis? Third, how can we be sure to have the policy tools we will need to counter the next downturn?
Monetary policy has long been and remains accommodative in the largest countries, underpinning the current easy global financial conditions. Even though the United States Federal Reserve continues to raise interest rates gradually, it has been cautious, having wisely responded to the turbulence of early 2016 by postponing previously expected rate increases. The European Central Bank has started to taper its large-scale asset purchases, which have played a critical role in reviving euro area growth, but has also signaled that interest-rate increases are a more distant prospect.
Moreover, fiscal policy in advanced economies has, on balance, shifted from contractionary to roughly neutral over the past few years, while China has provided considerable fiscal support since its growth slowed at mid-decade, with important positive spillovers to its trade partners. In the U.S., of course, fiscal policy is about to take a markedly expansionary turn, with complex effects on the world economy.
Not the new normal
Our view is that the current upturn, however welcome, is unlikely to become a new normal and faces medium-term downside hazards that likely will grow over time. We see several reasonsto some extent reflected in our medium-term growth projectionsto doubt the durability of the current momentum:
Advanced economies are leading the upswing, but once their output gaps close, they will return to longer-term growth rates that we still expect to be well below pre-crisis rates. While we project advanced-economy growth of 2.3 percent in 2018, our assessment of the group's longer-term potential growth is only about two-thirds as high. Demographic change and lower productivity growth pose obvious challenges that call for major investments in people and research. Fuel exporters face especially bleak prospects and must find ways to diversify their economies.
The two biggest national economies driving current and near-term future growth are predictably headed for slower growth. China will both cut back the fiscal stimulus of the last couple of years and, in line with the stated intentions of its authorities, rein in credit growth to strengthen its overextended financial system. Consistent with these plans, the country's ongoing and necessary rebalancing process implies lower future growth. As for the United States, whatever output impact its tax cut will have on an economy so close to full employment will be paid back partially later in the form of lower growth, as temporary spending incentives (notably for investment) expire, and as increasing federal debt takes a toll over time.
As important as they have been to the recovery, easy financial conditions and fiscal support have also left a legacy of debt - government, and in some cases, corporate and household - in advanced and emerging economies alike. Inflation and interest rates remain low for now, but a sudden rise from current levels, perhaps due to procyclical policy developments, would tighten financial conditions globally and prompt markets to re-evaluate debt sustainability in some cases. Elevated equity prices would also be vulnerable, raising the risk of disruptive price adjustments.
Despite rising growth in Europe, Asia, and North America, there is less good news in the Middle East and Sub-Saharan Africa; the latter area weighed down by the weakness of its larger economies. Low growth, driven in part by adverse weather events and sometimes combined with civil strife, has sparked significant outward migrations. Improvements in some large Latin American economies are notable but aggregate growth in the region will be weighed down this year by continuing economic collapse in Venezuela.
Even though the recovery has lifted employment and aggregate income from crisis lows, voters in many advanced economies have soured on political establishments, doubting their ability to deliver broadly shared growth in the face of tepid real wage gains, reduced labor shares in national income, and rising job polarization. A turn to more nationalistic or authoritarian governance models, however, could result in stalled economic reforms at home and a withdrawal from cross-border economic integration. Both developments would harm longer-term growth prospects, to the detriment of those who have already fallen behind over the past few decades. Levels of inequality are high in emerging market and low-income economies, and carry the seeds of eventual future disruptions unless growth can be made more inclusive.
Policymakers must face the challenges
Perhaps the over-arching risk is complacency. While the current conjuncture might appear to be a sweet spot for the global economy, prudent policymakers must look beyond the near term.
No matter how tempting it is to sit back and enjoy the sunshine, policy can and should move to strengthen the recovery. Now is the time to build policy buffers, reinforce defenses against financial instability, and invest in structural reforms, productive infrastructure, and people. The next recession may be closer than we think, and the ammunition with which to combat it is much more limited than a decade ago, notably because public debts are so much higher.
An upswing so broad also furnishes an ideal moment to act on a range of multilateral challenges. These include countering global financial stability threats, including cyber-threats; strengthening the multilateral trading system; cooperation on international tax policy, including the fight against money laundering; and promoting sustainable development in low-income countries. Of especially urgent importance is to fight irreversible environmental damage, notably from climate change.
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