MSS's policy target includes Micro Enterprises (MEs) and Small and Medium-sized Enterprises (SMEs). These two types of enterprises account for 99.9% of the entire private enterprises of Korea.
A Micro Enterprise is defined as an enterprise employing nine or less people (in the service industry, four or less people). The number of MEs in Korea amounts to approximately 3 million.
A Small-sized Enterprise is an enterprise that has annual sales revenue less than 1 to 12 billion Korean Won (threshold varies with industry), and Small-sized Enterprises include Micro Enterprises. In Korea there are 378,000 Small-sized enterprises excluding Micro Enterprises.
A Medium-sized Enterprise is an enterprise that is bigger than Small-sized Enterprise and has annual sales revenue less than 40 to 150 billion Korean Won (threshold varies with industry). There are 102,000 Medium-sized Enterprises in Korea.