What Is the Big Mac Index? How It Works & What It Tells Us in 2026
Published April 14, 2026 · Updated with February 2026 data
The Big Mac Index is one of the most recognized informal economic indicators in the world. Created by The Economist in 1986, it uses the price of a McDonald's Big Mac to compare purchasing power across countries. In 2026, a Big Mac costs $5.91 in the United States. Here is what that number means, how the index works, and why we built the Burgernomics as a domestic alternative.
How the Big Mac Index Works
The theory behind the Big Mac Index is purchasing power parity (PPP), the idea that identical goods should cost the same in every country once you account for exchange rates.
The Big Mac is ideal for this because McDonald's sells a nearly identical product in roughly 120 countries. Same two beef patties, same special sauce, same sesame seed bun. If a Big Mac costs $5.91 in America and 4.49 euros in Germany, the Big Mac-implied exchange rate is 0.76 euros per dollar. Compare that to the actual market rate and you get a rough measure of whether the euro is over- or undervalued.
Big Mac US Price History
In the United States, the Big Mac has been a reliable inflation barometer:
| Year | Big Mac | Change |
|---|---|---|
| 2017 | $4.19 | - |
| 2018 | $4.29 | +2.4% |
| 2019 | $4.51 | +5.1% |
| 2020 | $4.82 | +6.9% |
| 2021 | $4.90 | +1.7% |
| 2022 | $5.15 | +5.1% |
| 2023 | $5.39 | +4.7% |
| 2024 | $5.69 | +5.6% |
| 2025 | $5.79 | +1.8% |
| 2026 | $5.91 | +2.1% |
That is a 41% increase in 9 years, faster than the overall CPI because restaurant costs (labor, rent, franchise fees) have risen faster than food commodity prices.
Why We Built the Burgernomics
The Big Mac Index is elegant but it has a fundamental problem for measuring food inflation: only about 30% of the Big Mac's price is actual food cost. The rest is labor, rent, marketing, franchise fees, and profit. When McDonald's raises the Big Mac price, it might be because beef got expensive, or it might be because rent went up or minimum wage increased.
The Burgernomics strips away everything except the food. We track the BLS CPI Average Price for five ingredients, ground beef, American cheese, bread, lettuce, and tomatoes, and calculate what a single homemade cheeseburger costs to make.
The result: $3.29 in February 2026. That is $2.62 less than a Big Mac. The difference is the cost of convenience, paying someone else to cook, serve, and clean up.
Big Mac Index: Limitations
- Not identical everywhere. Big Macs vary in size, ingredients, and tax treatment across countries.
- Local costs dominate. Rent and labor costs vary wildly. A Big Mac in Manhattan costs more than one in rural Mississippi, same country, same currency.
- McDonald's coverage gaps. No McDonald's in many African and Asian countries.
- Menu pricing is strategic. McDonald's prices burgers to compete locally, not to reflect PPP.
Despite these flaws, academic research has found the Big Mac Index correlates reasonably with more rigorous PPP measures. The Economist now publishes an adjusted Big Mac Index that accounts for GDP per person.
The Bottom Line
The Big Mac Index is a clever way to think about currencies and purchasing power. But if you want to understand what food actually costs in America, stripped of labor, rent, and corporate margins, the Burgernomics is a purer signal. One measures what McDonald's charges. The other measures what food costs.
See the full Big Mac Index US data page for the complete price history, regional breakdowns, and chain-by-chain comparison.
Frequently Asked Questions
Who created the Big Mac Index?
The Big Mac Index was created by The Economist magazine in September 1986 by economics editor Pam Woodall. It was intended as a lighthearted illustration of purchasing power parity theory, but has since become a widely recognized economic indicator cited by the IMF, World Bank, and academic researchers.
How is the Big Mac Index calculated?
The calculation is simple: divide the Big Mac price in one country by the price in another (typically the U.S.) to get an implied exchange rate. Compare that implied rate to the actual market exchange rate. If the implied rate is lower than the market rate, the currency is "undervalued" according to the Big Mac Index. The current U.S. price is $5.91.
What is the difference between the Big Mac Index and the Burgernomics?
The Big Mac Index compares a branded fast-food product across countries to measure currency valuation. Burgernomics tracks the raw ingredient cost of making a burger at home (currently $3.29) using BLS price data across U.S. regions. The Big Mac includes labor, rent, and profit (only ~30% is food cost). Burgernomics isolates just the food.
Is the Big Mac Index reliable?
The Big Mac Index has known limitations: Big Macs vary by country (portion sizes, ingredients, taxes), it ignores local non-tradable costs like rent and labor, and it only works where McDonald's operates. However, research shows it correlates reasonably well with more rigorous PPP measures, and The Economist now publishes an "adjusted" version accounting for GDP per person.
What does the Big Mac Index tell us about inflation?
In the U.S., Big Mac prices have risen from $4.19 in 2017 to $5.91 in 2026, a 41% increase. This outpaces general CPI inflation over the same period because restaurant costs (labor, rent) have grown faster than food commodity prices.