There is no consensus view on why market interest rates are so low. A lack of demand for loans by businesses is thought to be the key reason. With the gross domestic product growing at only
a 1.5 percent rate in the second quarter, businesses have no difficulty meeting the demand for goods and services without having to invest or expand capacity.
Moreover, nonfinancial corporate businesses have more than $1.5 trillion in financial assets available to them, according to the Fed’s
flow of funds report. This is money they could invest tomorrow if they saw any need to do so.
Another possibility is that the economy is experiencing de facto deflation; that is, a falling price level. While this is not evident in the consumer price index, economic theory nevertheless suggests that this may be the case.
That is because theory says that the real (inflation-adjusted) interest rate is relatively stable. A recent Federal Reserve Bank of St. Louis
study says the “natural rate of interest” historically has been about 2 percent. So if banks are satisfied with a market interest rate of 0.25 percent or less, this suggests that the economy may be experiencing a deflation rate of about 2 percent. (The rate of deflation is added to the market interest rate to yield the real rate.)
If this is true, it explains why the economy appears to be suffering from tight money despite low nominal interest rates and a vast amount of excess reserves in the banking system. Deflation has a paralyzing effect on business activity because downward pressure on prices causes profits to be squeezed.
Indeed, the International Monetary Fund has lately
warned of the danger of deflation, and The New York Times
reports that China is now suffering from it. There is also evidence of deflation in the United States in
daily price data collected by the Massachusetts Ins ute of Technology.