Popular bank-industry of the inter-war period emerged as the most stable part of the credit system in Slovakia an even in the whole Czechoslovak Republic. It was a safe haven of financial system especially during the uncertain times of the Great Depression. An important advantage was the high level of the popular bank-industry in the Czech lands which was an example for Slovakia. It helped to implement the modern structure of bank-industry in four basic types of institutions: credit cooperatives, Peasant Mutual Offices, municipal savings banks and trade credit houses.