Markets
The Latte Index: Using the Impartial Bean to Value Currencies
The Impartial Bean
Using the price of a coffee to estimate currency value
The Chart of the Week is a weekly Visual Capitalist feature on Fridays.
Like any other market, there are many opinions on what a currency ought to be worth relative to others.
With certain currencies, that spectrum of opinions is fairly narrow. As an example, for the world’s most traded currency – the U.S. dollar – the majority of opinions currently fall in a range from the dollar being 2% to 11% overvalued, according to organizations such as the Council of Foreign Relations, the Bank of International Settlements, the OECD, and the IMF.
For other currencies, the spectrum is much wider. The Swiss franc, which some have called the world’s most perplexing currency, has estimates from those same groups ranging from about 13% undervalued to 21% overvalued.
Such a variance in estimates makes it hard to come up with any conclusive consensus – so in today’s chart, we refer to a more caffeinated and fun measure that also approximates the relative value of currencies.
The Impartial Bean
The “Latte Index”, developed by The Wall Street Journal, uses purchasing-power parity (PPP) – comparing the cost of the same good in different countries – to estimate which currencies are overvalued and undervalued.
In this case, the WSJ tracked down the price of a tall Starbucks latte in dozens of cities around the world. These prices are then converted to U.S. dollars and compared to the benchmark price, which is a tall Starbucks latte in New York City (US$3.45).
The Latte Index is mostly for fun, but it’s also broadly in line with predictions made by the experts.
For example, the price of a latte in Toronto, Canada works out to US$2.94, which is about 14.8% under the benchmark NYC price. This suggests that relative to the USD, the Canadian dollar is undervalued. Interestingly, estimates from the aforementioned sources (BIS, OECD, CFR, IMF) have the Canadian dollar at being up to 10% undervalued – which puts the Latte Index not too far off.
Given the wild range of estimates that exist for currency values, using the relative cost of a cup of joe might be as good of a proxy as any.
Markets
Visualizing the Rise of the U.S. Dollar Since the 19th Century
This animated graphic shows the U.S. dollar, the world’s primary reserve currency, as a share of foreign reserves since 1900.
Creator Program
Visualizing the Rise of the U.S. Dollar Since the 19th Century
As the world’s reserve currency, the U.S. dollar made up 58.4% of foreign reserves held by central banks in 2022, falling near 25-year lows.
Today, emerging countries are slowly decoupling from the greenback, with foreign reserves shifting to currencies like the Chinese yuan.
At the same time, the steep appreciation of the U.S. dollar is leading countries to sell their U.S. foreign reserves to help prop up their currencies, in turn buying currencies such as the Australian and Canadian dollars to help generate higher yields.
The above animated graphic from James Eagle shows the rapid ascent of the U.S. dollar over the last century, and its gradual decline in recent years.
Dollar Dominance: A Brief History
In 1944, the U.S. dollar became the world’s reserve currency under the Bretton Woods Agreement. Over the first half of the century, the U.S. ran budget surpluses while increasing trade and economic ties with war-torn countries, expanding its influence as the world’s store of value.
Later through the 1960s, the U.S. dollar share of global foreign reserves rapidly increased as political allies stockpiled the dollar.
By 2000, dollar dominance hit a peak of 71% of global reserves. With the creation of the European Union a year earlier, countries such as China began increasing the share of euros in reserves. Between 2000 and 2005, the share of the dollar in China’s foreign exchange reserves fell by an estimated 15 percentage points.
The dollar began a long rally after the global financial crisis, which drove central banks to cut their dollar reserves to help bolster their currencies.
Fast-forward to today, and dollar reserves have fallen roughly 13 percentage points from their historical peak.
The State of the World’s Reserve Currency
In 2022, 16% of Russia’s export transactions were in yuan, up from almost nothing before the war. Brazil and Argentina have also begun adopting the Chinese currency for trade or reserve purposes. Still, the U.S. dollar makes up 80% of Brazil’s reserves.
Yet while the U.S. dollar has decreased in share of foreign reserves, it still has an immense influence in the world economy.
The majority of trade is invoiced in the U.S. dollar globally, a trend that has stayed fairly consistent over many decades. Between 1999-2019, 74% of trade in Asia was invoiced in dollars and in the Americas, it made up 96% of all invoicing.
Furthermore, almost 90% of foreign exchange transactions involve the U.S. dollar thanks to its liquidity.
However, countries are increasingly finding alternative options than the dollar. Today, Western businesses have begun settling trade with China in renminbi. Looking further ahead, digital currencies could provide options that don’t include the U.S. dollar.
Even more so, if the U.S. share of global GDP continues to shrink, the shift to a multipolar system could progress over this century.
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