Published on 12:00 AM, December 20, 2017

Central banks, trade and bubbles threaten the 2018 status quo

After a year of relatively healthy global economic growth, economists are predicting pretty much the same for 2018 -- a neither too-hot nor too-cold Goldilocks scenario, but with little sight of the three bears.

The idea is that all is pretty much on track for growth that will be stronger than in 2017.

Part of this may come from the fact that forecasters generally got it wrong last year, under clubbing this year's economic performance, particularly for the euro zone and Japan.

The International Monetary Fund, for example, saw 2017 global growth at 3.4 percent with advanced economies advancing 1.8 percent. It now reckons them at 3.6 percent and 2.2 percent.

It had the euro zone and Japan growing 1.5 percent and 0.6 percent, respectively. It now has them at 2.1 percent and 1.5 percent

"Faster growth is reaching roughly two-thirds of the world's population," the IMF said in a December blog post.

This performance has made some economists optimistic. Nomura is among the more bullish: "Global growth has far more self-reinforcing characteristics at present than at any time over the last 20-30 years."

But Goldilock's bears do have a habit of showing up. There are huge numbers of potential political and economic risks to the status quo. But as in the fairy tale, let's go with just three: central banks, trade, and bubbles.

In the first case, the danger is that there will be a policy mistake, squeezing debtors. The second relates to renewed US protectionism or anger over Chinese exports triggering tit-for-tat, growth-stifling trade barriers.

The third is about sudden market losses that dry up spending and demand.

Part of 2017's global economic success was put down to a combination of extraordinarily loose monetary policy and competent management by central banks of their attempts to wean the world off such largesse.

Entering 2018 the US Federal Reserve is lining up for three more hikes, the European Central Bank is slowly cutting back on its asset purchases, and China is increasing rates.

All of this is being carefully flagged by the policymakers, but mistakes can happen and any significant shift of gear could cause a sharp retrenchment in consumer and corporate spending.

The amount of US corporate debt outstanding, for example, is nearly $8.8 trillion, according to Sifma, the US securities industry group. That is up 35 percent since 2010 and a major driver behind corporate expansion.

"Financial stability risks pose a bigger threat to the continuation of the (growth) cycle than price stability risks," Morgan Stanley co-head of economics Chetan Ahya wrote in a 2018 outlook, saying US corporates were the most exposed to higher interest rates.

This implies that central bank tightening to curb overly robust growth or inflation risks creating a credit squeeze -- hence the caution in Washington, Frankfurt, Beijing and Tokyo.

US President Donald Trump's 2016 election campaign was peppered with "America First" rhetoric and a dollop of belligerence about other countries.

In office, the Trump administration has done a few things in the name of US interests to upset multilateralists.

It has, for example, launched an investigation into steel imports, blocked the appointment of judges at the World Trade Organization, and withdrawn the United States from a now 11- member Pacific Rim trade pact.

Other measures have not progressed as far, notably the threat to withdraw from the North American Free Trade Agreement, and the pledge to bring China to heel over its allegedly unfair trade practices.

But the US trade deficit increased to $43.5 billion despite growth-driven US exports. The US-China deficit dropped a bit but was still $34.6 billion in Beijing's favour.