When I think about which country is the richest in the world, most people immediately think of the United States for its largest overall economy. But here’s the interesting point: if we look at GDP pro capite—that is, average wealth per person—the picture changes completely.

Luxembourg, Singapore, Ireland, and Qatar rank far ahead of the USA when it comes to well-being per person. Luxembourg reaches $154,910 per capita, while the United States stops at $89,680. It’s not small, but there’s a clear difference.

This disparity depends on specific factors. Some countries, like Qatar and Norvegia, have built their wealth by leveraging oil and natural gas. Others, like Switzerland and Singapore, have focused on financial and banking services. Luxembourg, for example, has turned an agricultural economy into a financial hub thanks to stable governments, a skilled workforce, and a business-friendly environment.

Singapore is a special case: in a short time, it went from a developing country to an advanced, high-income economy. How? Extremely low taxes, solid governance, and one of the world’s most important container ports. Macao, with $140,250 per capita, lives mainly on gaming and tourism. Ireland, on the other hand, leveraged access to the European market, pharmaceuticals, and software.

But there’s an important detail: GDP pro capite doesn’t tell the whole story. It doesn’t show income inequality. The United States, despite its enormous total GDP, has one of the highest disparities between rich and poor among developed countries. It hosts the two largest stock exchanges in the world (NYSE and Nasdaq), Wall Street dominates global finance, and the dollar is the international reserve currency. They invest 3.4% of GDP in research and development. Yet the national debt has exceeded 36 trillion dollars.

So the richest country in the world depends on how you measure it. In absolute terms: the USA. Per capita: Luxembourg. And this distinction explains a lot about how the global economy really works.