Anybody who ever read anything Milton Friedman said about monetary policy should know that low interest rates and bond yields mean that monetary policy is tight rather than easy. And when bond yields drop it is normally a sign that monetary policy is becoming tighter rather than easier.

Here is Friedman on what he called the interest rate fallacy in 1997:

“After the U.S. experience during the Great Depression, and after inflation and rising interest rates in the 1970s and disinflation and falling interest rates in the 1980s, I thought the fallacy of identifying tight money with high interest rates and easy money with low interest rates was dead. Apparently, old fallacies never die.”

Unfortunately the old fallacy is still not dead and it is still very common to associate low interest rates and low bond yields with easy monetary policy. Just think of the ECB’s insistence that it’s monetary policy stance is “easy”.

In my previous post I demonstrated that all the major changes in the S&P500 over the past four years can be explained by changes in monetary policy stance from either the ECB or the Federal Reserve (and to some extent also PBoC). Hence, it is not animal spirits, but rather monetary policy failure that can explain the volatility in the markets over the past four years.

What holds true for the stock market holds equally true for the bond market and the development in the US fixed income markets over the past four years completely confirms Milton Friedman’s view that tighter monetary policy is associated with lower bond yields. See the graph below. Green circles are monetary easing. Red circles are monetary tightening. (See more on each “event” in my previous blog post)

I think the graph very clearly shows that Friedman was right. Every time either the ECB or the Federal Reserve have moved to tighten monetary policy long-term US bonds yields have dropped and when the same central banks have moved to ease monetary policy yields have increased.

Judging from the level of US bond yields – and German bond yields for that matter – monetary policy in the US (and the euro zone) can hardly be said to be  easy. In fact it is very clear that monetary policy remains excessively tight in both the US and the euro zone. Unfortunately neither the Fed nor the ECB seem to acknowledge as they still seem to be of the impression that as long interest rates are low monetary policy is easy. I wonder what Friedman would have said? Well, I fact I am pretty convinced that he would have been very clear and would have been arguing with the Market Monetarists that monetary disorder is to blame for this crisis and we only will move out of the crisis once the Fed and the ECB move to fundamentally ease monetary conditions and adopt a rule based monetary policy rather than the present zig-zagging.

PS See also my early post on the connection between monetary policy and the bond market: Understanding financial markets with MV=PY – a look at the bond market
Update: Scott Sumner just made me aware of one of his post addressing the same topic. See here.

Update 2: Jason Rave has kindly reminded me of this Milton Friedman article, which also deals with the interest rate fallacy.