Despite its small size and limited natural resources, Liechtenstein has developed into a prosperous, highly industrialized, free-enterprise economy with a vital financial service sector and living standards on a par with the urban areas of its large European neighbors. Low business taxes - the maximum tax rate is 18% - and easy incorporation rules have induced 73,700 holding or so-called letter box companies to establish nominal offices in Liechtenstein, providing 30% of state revenues. The country participates in a customs union with Switzerland and uses the Swiss franc as its national currency. It imports more than 90% of its energy requirements. Liechtenstein has been a member of the European Economic Area (an organization serving as a bridge between European Free Trade Association (EFTA) and EU) since May 1995. The government is working to harmonize its economic policies with those of an integrated Europe.
