At a time, Zagreb had a population of 100,000 and was rapidly developing into a modern city.
The bank's primary role was financing the city's public companies.
In 1916, the bank acquired the Zagreb electric tram company (ZET) and invested heavily in the development of the tram network and public transport in general.
[2] The City Savings Bank benefited in this from its backing by the municipality of Zagreb.
Like all other such entities, it was merged into the National Bank of Yugoslavia in 1952 under the era's "monobank" system, which was however dismantled later in the same decade.