Whenever someone asks which country is the richest in the world, the automatic answer is the United States. But here’s the detail that many people don’t take into account: when we talk about GDP per capita, the story is completely different. There are much smaller nations that surpass the Americans in wealth per person.

I looked into it more closely and discovered something interesting. Luxembourg leads by a wide margin, reaching an impressive $154,910 per inhabitant. Singapore comes right behind with $153,610. Then comes Macau, Ireland, Qatar, and Norway. The US? It ranks in tenth place with $89,680. This clearly shows how much what counts as the “richest country in the world” depends on how you measure wealth.

What stands out is the pattern behind it. Some countries built their wealth through natural resources. Qatar and Norway, for example, massively exploit oil and gas. Meanwhile, Luxembourg, Singapore, and Switzerland took a different path: financial and banking services. These countries created business ecosystems so attractive that they became magnets for global investment.

Luxembourg is the most interesting case. It was a rural economy until the mid-19th century. Then it developed such a strong financial sector that it became almost synonymous with banking secrecy. Today, besides finance, the country also benefits from tourism and logistics. And there’s more: it spends about 20% of GDP on social welfare, one of the highest rates in the OECD.

Singapore is another fascinating example. It transformed from a developing country into a high-income economy in record time. It has the world’s second-largest container port. Innovative policies, a stable government, and a skilled workforce—everything about this attracted massive foreign investment.

The story of the US is different. The largest economy in terms of nominal GDP? Yes. But when you divide wealth by population, the ranking drops. Americans have the world’s biggest stock exchanges, Wall Street is the epicenter of global finance, and the dollar is the international reserve currency. They invest 3.4% of GDP in research and development. Even so, income inequality there is brutal among developed countries, and national debt has already surpassed $36 trillion.

When you truly analyze which country is the richest in the world by GDP per capita, you realize that size is not everything. Small nations with stable governments, a skilled workforce, and a business-friendly environment are able to concentrate wealth impressively. GDP per capita measures exactly that: average income per person. But be careful, because this metric doesn’t show internal inequality. A country can have a high GDP per capita and still have a big gap between the rich and the poor.

Ireland is another case that deserves attention. After decades of protectionism that left it behind, it opened up its economy, joined the European Union, and attracted pharmaceutical and software companies with low corporate taxes. The result: today it’s among the ten richest.

Guyana is the recent wildcard. It discovered oil in 2015 and its economy accelerated drastically. It’s in tenth place now, but it continues diversifying so it doesn’t depend only on commodities.

The point is: a country’s wealth isn’t just about the size of its economy. Luxembourg, Singapore, Switzerland, and others show that political stability, quality education, a business-friendly environment, and strategic sectors can generate extraordinary per-capita wealth. Meanwhile, the US remains the largest economy in absolute numbers, but divided among 330 million people, it falls behind several much smaller neighbors.