The Big Mac Index
If you like fast food and a good deal, you can find a really cheap Big Mac in Russia. The Economist created The Big Mac Index 30 years ago as a rough-and-ready gauge of world currencies. The index is based on the idea when currencies are aligned correctly, the same product (in this case, a Big Mac®) should have the same price in different countries when that price is denominated in a single currency. This is called purchasing power parity (PPP).
For the purposes of this commentary, we looked at the price of a Big Mac in U.S. dollars. Early in 2016, a Big Mac cost a hungry American about $4.93. In Russia, it cost about a $1.53, in the Euro area $4.00, and in Switzerland, about $6.44. These prices indicate the Russian ruble is undervalued by about 69 percent, the Euro is undervalued by about 19 percent, and the Swiss franc is overvalued by almost 31 percent. Switzerland is an outlier, according to The Economist:
“Americans hunting for cut-price burgers abroad are spoilt for choice: the index shows most currencies to be cheap relative to the greenback. This is partly owing to the Federal Reserve’s decision to raise interest rates when the central banks of the euro zone and Japan are loosening monetary policy... Another force weakening many currencies, including the ruble, has been the ongoing slump in commodity prices since mid-2014. Shrinking demand from China and a glut of supply have sapped the value of exports from Australia, Brazil, and Canada, among other places, causing their currencies to wilt, too.”
In theory, when a country’s currency depreciates relative to that of its trading partners, the country’s exports should become more attractive because they are less expensive and should boost economic growth. However, depreciation hasn’t produced the results many expected.
One explanation, offered by both the World Bank and the IMF, is globalization. If a country’s exports are part of a global supply chain, then the cost of materials imported to create the exports may offset gains from currency depreciation. According to The Economist, “The IMF thinks this accounts for much of the sluggishness of Japan’s exports; the World Bank argues that it explains about 40 percent of the diminished impact of devaluations globally.”
Think About It
“If a man does not keep pace with his companions, perhaps it is because he hears a different drummer. Let him step to the music which he hears, however measured or far away.”
--Henry David Thoreau, American author