The Investment Scientist

Archive for August 2019

For the final article of this macroeconomics series, I want to write about something that is much more relevant to your financial wellbeing, whether you are a wage earner or business owner. That is, what would happen if the dollar loses its status as the predominant reserve currency?

The Quantity Theory of Money states:

M/P = kY where

M is the total money supply, P is the gross price level, and kY can be interpreted as the demand for money.

If the dollar loses its “gold” status, central banks around the world will need much fewer dollars and the demand kY for the dollar will drop. To balance this out, either the gross price level P will increase, or the total money supply M will have to be reduced. To put it in layman’s terms, we will get hyper inflation and hyper interest rates, the latter to reduce the money supply.

Let’s look at a historical precedence. See the chart below

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“Why are so many countries lending to the US for negative real interest?” Professor Sussman opened the floor for debate at our Oxford macroeconomics class. In totality, foreign countries own $6.2T of US debt. The chart below shows the countries that lend to the US.

In the previous three articles, I wrote about The Gold StandardThe Fiat Money andThe National Saving Shortage respectively. I hope I explained that the trade deficit is recycling of foreign savings for US private investments. And as long as we are paying negative real interest on our national debt, It’s not a problem, but a win to be able to keep borrowing. What I did not explain is why foreign countries would lend to us at negative real interest, and this is exactly what the professor asked in class and what I hope to explain with this article.

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Author

Michael Zhuang is principal of MZ Capital, a fee-only independent advisory firm based in Washington, DC.

Twitter: @mzhuang

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