Euro

The euro is the official currency of the euro area, the group of 20 European Union countries that share one currency, including Germany, France, Italy, and Spain. More than 350 million people use it daily, which makes it the largest shared-currency arrangement in history.

One currency across many countries means one interest-rate policy for very different economies. That design is the euro's greatest strength, deep markets and frictionless trade across borders, and also the source of its hardest moments, like the euro-area debt crisis of the early 2010s.

The European Central Bank in Frankfurt manages the euro alongside the national central banks of the member countries. Its primary mandate is price stability, with an inflation target of 2 percent over the medium term.

Decisions are made for the whole euro area at once. An interest rate that suits a booming member economy can be painful for one in recession, which is why euro policy often reads as a compromise across very different countries.

The euro against the US dollar is the most traded currency pair in the world, and many investors treat it as a quick read on the relative health of the European and American economies.

For anyone holding international funds, the euro's moves directly change returns: a European stock fund can rise in euros yet fall in dollar terms if the euro weakens. The euro is also the main alternative reserve currency, so its credibility matters for the whole global system.

Euro-area inflation stayed low for most of the currency's first two decades, then surged after 2021 before easing again. Like every currency, the euro slowly loses purchasing power in normal times, which is why the ECB's 2 percent target shapes everything it does.

For savers in euros, the same logic applies as for dollar savers: cash that earns less than inflation is quietly shrinking. Understanding that trade-off matters more than memorizing any exchange rate.

The euro-dollar exchange rate is the most watched currency price in the world. Since the euro launched in 1999, one euro has been worth as little as roughly 0.8 US dollars and as much as roughly 1.6, a reminder that even major currencies move a great deal across decades.

The euro is the clear number two in global reserves and payments, but the gap to the dollar remains wide. Most global commodities still price in dollars, and euro financial markets, while deep, are split across many national bond markets rather than unified into one.