As a private bank and public joint stock company, BSI was established on September 15, 1952 with Rials 20 million in share capital, 50% of which was paid in cash and launched its operation on November 13, 1952 with a staff of thirteen.
BSI overseas activity began by establishing a branch in Hamburg, Germany and now it has 21 active branches and 3 regional offices in Asian and European countries. Furthermore, BSI is the shareholder of two active independent and two joint venture banks.
With more than 3000 active branches and a paid-up share capital of Rials 16,803 billion, BSI runs the largest banking network in Iran. In 2000, BSI started offering electronic services and now pioneers the number of online branches, ATM machines, POS machines, and issued debit cards across Iran and Middle East banking systems.