🇲🇨 Monaco

Monaco is the world's second-smallest country at just 2.02 square kilometers — a city-state on the French Riviera with 39,000 residents and a GDP of about $8.6 billion. It has the highest population density of any country (over 19,000 per square kilometer) and the highest concentration of millionaires — about one in three residents is a millionaire. Monaco has no income tax for individuals, which is the entire point. The Monte Carlo Casino, the Formula 1 Grand Prix, and the yacht-filled harbor define the brand. The Grimaldi family has ruled since 1297, making it one of the oldest ruling dynasties in the world.

Tourism, real estate, financial services, and a small but high-value industrial sector (cosmetics, pharmaceuticals, precision instruments) drive the economy. Property prices average about €50,000 per square meter — the most expensive in the world. The country uses the euro (though not an EU member) and has a customs union with France. About 60,000 people commute into Monaco daily from France and Italy to work — more than the resident population. VAT and business taxes generate government revenue in lieu of income tax.

Monaco has reclaimed about 20% of its current territory from the sea through land reclamation projects, and a new $2.4 billion offshore extension (Mareterra) added another 6 hectares in 2024. The country's Oceanographic Museum, built into a cliff face, was directed by Jacques Cousteau for 31 years. Monaco's citizens (Monégasques) are actually a minority in their own country — only about 9,000 of the 39,000 residents hold Monégasque nationality.

Monaco's model is simple and effective: be a tax haven with great weather and strict security. Global tax transparency efforts are a theoretical threat, but the principality has adapted before and will likely adapt again.