Banco de Santiago collapse and the evolution of banking regulation

The 1983 collapse of the Banco de Santiago in Chile serves as a historical case study for the dangers of connected lending. The bank, which maintained strong political ties to the government, pursued aggressive expansion by issuing loans to companies within its own group or to new entities managed by former employees.

While these loans remained within legal frameworks, they were used to fund speculative operations with depositors' money. The bank's eventual collapse significantly impacted the Chilean economy. This event contributed to a global shift in banking supervision, leading to the principle that 'substance is more important than form.' This regulatory standard requires that banking operations be evaluated based on their actual economic and financial reality rather than their legal appearance.