Small and medium-sized enterprises (SMEs, also small and medium enterprises) or small and medium-sized businesses (SMBs) are businesses whose personnel numbers fall below certain limits. The abbreviation "SME" is used in the European Union and by international organizations such as the World Bank, the United Nations and the World Trade Organization (WTO). Small enterprises outnumber large companies by a wide margin and also employ many more people. SMEs are also said to be responsible for driving innovation and competition in many economic sectors.
Petrakis and Kostis (2012) explore the role of interpersonal trust and knowledge in the number of small and medium enterprises. They conclude that knowledge positively affects the number of SMEs, which in turn, positively affects interpersonal trust. Note that the empirical results indicate that interpersonal trust does not affect the number of SMEs. Therefore, although knowledge development can reinforce SMEs, trust becomes widespread in a society when the number of SMEs is greater.
Most of Egypt's businesses are small-sized, with 97 percent employing less than 10 workers, according to census data released by state-run statistics body CAPMAS.
Medium-sized enterprises with 10 to 50 employees account for around 2.7 percent of total businesses. However, big businesses with over 50 employees account for 0.4 percent of all enterprises nationwide.
The data is part of Egypt's 2012/13 economic census on establishments ranging from small stalls to big enterprises. Economic activity outside the establishments – like street vendors and farmers, for example – were excluded from the census.
The results show that Egypt is greatly lacking in medium-sized businesses.
Seventy percent of the country's 2.4 million businesses have only one or two employees. But less than 0.1 percent – only 784 businesses – employ between 45 and 49 people.
In Ethiopia there are SME enterprises funded by the government which are becoming sources of work.
In Kenya, the term changed to MSME which stands for "micro, small and medium-sized enterprises".
For micro enterprises, maximum number of employees is up to 10 employees. For small enterprises, it is from 10 to 50. For medium enterprises, it is from 50 to 100.
The Central Bank of Nigeria defines small and medium enterprises in Nigeria according to asset base and number of staff employed. The criteria are an asset base equal or less than N5 million, and a staff strength equal or less than 100 employees.