Central Banks Face New Balancing Act With Their Huge Asset Piles

Central bankers around the world are mulling the future of their massive bond-buying programs in a post-pandemic world, knowing that with big balance sheets come big expectations.

The Group of Seven developed economies piled on about $7 trillion in debt last year as they spent heavily to fight the pandemic and prop up their economies. Central banks ended up owning much of that new debt, according to Bloomberg Economics.

Even as asset purchases continue, with hundreds of billions of dollars spent each month, officials at the U.S. Federal Reserve and the European Central Bank are among those figuring out how—or if—they can reduce asset piles that have been a mainstay of financial markets for more than a decade.

The problem is that markets have come to expect central banks to use their buying power to smooth over any hint of trouble. Governments may be tempted to lean on monetary authorities to use it to keep borrowing costs low indefinitely. And activists now also call on monetary officials to use their firepower to fight inequality and even climate change. Those disparate expectations add to the unease fueled by economists who for years have warned about the long-term effects of quantitative easing.

“The Fed balance sheet is going to be gigantic for a long time,” says Alan Blinder, a former Fed vice chairman who’s now a Princeton professor. “That worries some people,” he says—but not Blinder himself.

The size of the Fed balance sheet in coming years will largely be determined by Federal Open Market Committee decisions regarding asset purchases and reinvestment policies, the New York Federal Reserve Bank noted in a late May report. Yet the report projects that the balance sheet could rise by 2023 to $9 trillion, equivalent to 39% of gross domestic product. Under a range of scenarios, Fed assets could remain at that level through 2030 or drop as low as $6.6 trillion.

QUANTITATIVE-EASING TOOLS have been a welcome boon to ­monetary institutions faced with policy rates already near or below zero. But they’ve also magnified the political profile of central banks, leaving them more exposed to entanglement in fiscal policy—or the perception that they could be.