This week’s Economist has called attention to the proverbial elephant in the room: Interest rates are persistently low. The article gives two reasons for this predicament: The first is the changing demography in most rich economies and also some emerging markets. Savings have increased to pay for a longer retirement, causing real interest rates to fall steadily. The second is the integration of China into the world economy. With savings rate at 40% of disposable incomes, China brings a lot of supply to the table.
With belated awareness, policy makers realize that the
drop in real interest rates is not a symptom. Instead it reflects a shift down
in underlying trend growth. While the historical relationship between real
interest rates and economic growth is weak, the reason behind the low rates –
that is, excessive saving – has come to dominate the demand for goods. In
short, global output has slowed.
The higher propensity to save means the neutral real rate
is lower than in the past. To gauge this, consider how much money the central
banks have printed via the many rounds of Quantitative Easing in the past eight
years. This has pushed interest rates and bond yields close to zero. If these
were too low, it should lead to overheating and rising inflation. So far, there
are no signs of this.
Indeed, well-intentioned attempts to guard against the
impact of low rates may perversely become a cause of even lower rates. For
instance, to stem rising home prices, some banking regulators have put
draconian limits on mortgage borrowers. Unfortunately, that has dampened demand
and fatally slowed the economy’s healing process. The inability to achieve
“escape velocity” ensures that real rates are kept low for extended periods of
time.
So what next? Each new round of central bank actions seems to bring less stimulus and more side effects. But all is not lost. The long-abandoned concept of using fiscal policy to fine-tune the economy went out of style when, in the 1970s, economists tried to work out why real interest rates were unusually high. Perhaps it is time to dust the idea down.
Reference:
http://www.economist.com/news/briefing/21707553-interest-rates-are-persistently-low-our-first-article-we-ask-who-or-what-blame