The Big Mac Index (BMI) provides an insightful, if superficial, view of the value of international currencies and how countries manage them. The BMI, which has been compiled by The Economist magazine since 1986, compares the dollar price of a Big Mac sandwich in approximately 50 countries worldwide. It serves as an alternative measure of the relative cost of living, incorporating inputs from the farm, manufacturing, and service sectors, as well as taxes and regulations. Over time, it provides insight into the relative valuation of different currencies.
The chart below illustrates the change in the price of a Big Mac from 2000 to 2026. In the United States, the price of a Big Mac rose by 144% during this period—significantly more than the 98% increase in the U.S. Consumer Price Index (CPI). The chart highlights striking variations in price changes, ranging from a 300% increase in Poland to nearly no increase in Japan, Taiwan, and India.
The rankings of the index for the past 25 years for a selection of emerging markets (EM) and developed countries are shown in the table below. The table is color-coded: developed countries in black, EM commodity producers in red, and the remaining EM countries in green. This period spans an extraordinarily turbulent economic environment, including the China “Shock,” the commodity super-cycle, the Great Financial Crisis, the COVID-19 shock, and the beginning of deglobalization.
The last 15 years can be characterized as a period of “American Exceptionalism,” driven by the shale revolution and the global dominance of Silicon Valley’s tech titans, which led to significant dollar appreciation. At the same time, commodity prices were subdued. However, a long-overdue process of dollar weakening may have started in 2025.
Key Trends by Category
The table highlights several trends over this period, best observed through the color-coded categories:
- Developed Countries: These economies have maintained a relatively narrow range of currency values relative to each other. Although the U.S. dollar has depreciated over the past year, it remains in the top third of the table, as it has consistently throughout the period. The Scandinavian countries, Britain, and Switzerland have stayed within a stable range near the top. Even Canada and Australia—both major commodity producers—have remained within a relatively tight range, though they are more volatile than other developed economies. A notable exception is Japan, which has experienced an extraordinary devaluation of the yen due to chronic deflation and quantitative easing. Furthermore, Japan is the only developed country (alongside its East Asian neighbors) consistently intent on managing its currency downward to maintain industrial competitiveness and exports.
- Emerging Markets (Excluding Commodity-Dependent Countries): These countries can be divided into two distinct groups:
- Mercantilist Economies: Taiwan, South Korea, China, Thailand, Malaysia, and Vietnam have prioritized export competitiveness. This has led to remarkable stability in the index, positioning them consistently in the bottom third. While these nations were among the biggest beneficiaries of hyper-globalization, they now stand to lose from deglobalization. The cases of South Korea and Taiwan are particularly striking: despite their increasing wealth, their currencies have become more competitive in BMI terms. Given their strategic alliances with the U.S., strong pressure from the Trump administration regarding tariffs and currency realignment is expected. These countries find themselves caught between the U.S. and China, facing the dual challenge of Chinese export competition and the threat of U.S. tariffs.
- Market-Oriented Economies: Countries such as Turkey, Poland, India, and the Philippines show little commitment to currency stability. They experience broad exchange rate fluctuations—driven by volatile trade and capital flows—which can undermine export competitiveness. Poland, in contrast to the Asian mercantilists, has allowed for a consistent appreciation of the zloty as the nation has grown wealthier.
- Commodity-Dependent Emerging Markets: These nations experience high levels of currency and economic instability. Over the past 25 years, free capital flows have exacerbated commodity-driven currency cycles, leading to extreme volatility due to “hot money” inflows and capital flight. This instability has contributed to acute deindustrialization in many of these economies. Argentina’s recent experience is particularly revealing: since 2010, Argentina has moved from the bottom of the table to the top third. Similarly, Brazil had one of the world’s most expensive Big Macs in both 2010 and 2015, exceeding even perennially expensive countries such as Sweden and Denmark. Among commodity-linked currencies, Indonesia stands out as an exception, behaving more like an “Asian Tiger” currency with relatively low volatility. Undoubtedly, the currencies of commodity producers will appreciate significantly if commodity prices continue to rally as they did during 2025.
Conclusion
In the current landscape of trade wars, shifting economic alliances, and increasing geopolitical tensions, currency realignment is becoming an essential tool for policymakers. The trends highlighted by the Big Mac Index reflect deeper structural shifts in the global economy—from the rise and fall of American exceptionalism to the challenges faced by both developed and emerging markets. As the forces of deglobalization take hold, nations will likely respond with a mix of tariffs, industrial policies, and monetary interventions to maintain competitiveness. The coming years will test the resilience of global currencies, determining which economies can adapt to this new era of economic realignment.