The Real Effective Exchange Rate – REER
The weighted average of a country’s currency relative to an index or basket of other major currencies adjusted for the effects of inflation. The weights are determined by comparing the relative trade balances, in terms of one country’s currency, with each other country within the index.
The main two adjustments are hence:
- Valuation against multiple currencies
- Adjustment for inflation effects, usually by producer price index (similar as in the purchasing power parity).
The choice of the basket
The most common basket used is a trade-weighted basket, typically the export-weighted basket. The important point is the competition in the global market: Hence the export decides. For Switzerland this export-weighted basket consists of the following trading partners:
The euro members, Germany, Italy, France and Spain, Austria, the Netherlands and some of the “Other Europe” add up to a total of a 45% Euro share. The following is the export-weighted exchange rate compared with the GDP-weighted exchange rate of the Swiss franc according to UBS, compared with the long-term trend. The long-term trend mirrors the stronger Swiss competitiveness thanks lower taxes, better infrastructure, human capital, details here.
Pictet determines a 0.4% long-run trend increase per year.
The RIETI approach
Recently the RIETI approach showed the export weights by industry, here in the example of the Japanese yen. Since end 2011, however, the REER of the yen has weakened considerably.
Different views on the real effective exchange rate
As opposed to UBS’s longterm chart, the SNB tries to suggest that the export-weighted exchange rate of the franc must be remain constant over time.
The newest numbers and also an archive can be found inside the SNB’s bi-weekly IMF data. Based on the 1999 base year (=100), the October 2012 value is 111.5, lower than the latest figures in the UBS and the SNB graph of the month of August.
The December value was 111.6, but in January the REER should have weakened because the EUR/CHF rose from 1.21 to 1.23.
Effectively the Swiss franc appreciation from around 96 to 114 seems to be similar to the one of the Swedish Krona and the Norwegian Krone, but as opposed to the SNB, the Swedish Riksbank is happy with the SEK exchange rate.
Which currency has revalued the most since 2007?
The following interesting graph from the main Swiss economic research institute KOF shows that by September 2012 the real effective exchange rate of the Swiss franc had risen by 19% against the 2007 levels, but the one of the Chinese Yuan (CNY) by 25% and the one of the Japanese Yen by 23%. On the other hand the UK, the US and the euro zone have seen a depreciation of their currencies. Inflation is represented by the word “real” inside the “real effective exchange rate”.
Hence CHF, CNY and JPY have revalued against the dollar by around 30% and against sterling more than 45%. The reasons:
- A very strong rise of CHF and JPY and low inflation (CHF) or deflation (JPY).
- Rising inflation in China and despite of that, a big yuan appreciation .
Paul Krugman shows in “An issue that has passed“ the same results:
During the food inflation in 2011, the Chinese government let the Renmembi revalue maybe too quickly from 6.8 to 6.4 per USD.
Very Long-Term: beyond seven to ten years
Having a weak or a strong currency depends on a country production factors, on its competitive advantage and on savings rates.
We argue that a country that provides cheap labor should have weak currency (e.g. China or India), the ones with a high savings rate, a strong capital basis and strong trade balances rather a stronger currency (e.g. Germany, Japan, Switzerland, but potentially also China). Since the US or the UK have weak trade balances and a low savings rate, their currencies, must depreciate in the very long-term.
Similarly a currency of a country with high savings, must appreciate with the time (more details about saving rates here).
Certainly these countries do not like an exaggerated rapid increase of the FX rate, therefore the Swiss introduced a (for us, temporary) peg.
Long-Term/Joseph cycles: up to seven years
For a certain period (often up to seven or more years, so-called “Joseph cycles” or credit cycles), monetary policy or investors (call it “animal spirits”) can create bubbles, like the real estate bubble in the United States, Spain, UK and Ireland between 2002 and 2007. The effect on FX rates were that the euro and pound got very expensive and were able to overlay the very-long term tendencies above, e.g. that the British pound must depreciate over the very long-term.
Certain countries did not participate in these irrational behaviors, especially German, Switzerland and Japan. Mostly not because these countries were smart enough, but because they lived another real estate bubble in the 1990s. During this period the franc was undervalued against the long-term trend, the yen even strongly undervalued.
The following graph from Citi’s Englander shows that the current commodity Joseph cycle favors commodity currencies like the Aussie and depresses the yen, the pound and the dollar, because these countries are still in a deleveraging phase.
More about Joseph cycles here.Disclaimer: The opinions expressed above are not intended to be taken as investment advice. It is to be taken as opinion only and we encourage you to complete your own due diligence when making an investment decision. Even if we often write about Forex trading, our advices aren't written for day traders who follow technical channels, but rather for mid- and long-term investors. Our aim is to show discrepancies between fundamental data and current asset valuations, which can lead in mid-term to an inversion to technical channels.