Why is the cost to the borrower of informal loan is much higher as compared to that of formal loan?

Informal lenders charge much higher interest on loans

The various types of loans can be conveniently grouped as formal sector loans and informal sector loans. Among the former are loans from banks and cooperatives. The informal lenders include moneylenders, traders, employers, relatives and friends. Compared to the formal lenders, most of the informal lenders charge a much higher interest on loans. Thus, the cost to the borrower of informal loans is much higher.