Based on a comparison of 11 banks in in 2017, Fio banka was the most cost efficient bank, followed by Komercni Banka and CSOB.

Fio banka's cost to income ratio reached 42.1% in 2017, down from 79.0% when compared to the last year. Historically, the bank’s costs reached an all time high of 101% in 2004 and an all time low of 42.1% in 2017.

When compared to total assets, bank's cost amounted to 1.39% in 2017, down from 0.850% a year earlier.