In particular, the promoters of the initiative included Pietro Marini, Count Vincenzo Pianciani, Giampietro Campana, and Carlo Luigi Morichini.
On the following 20 June the initiative received authorization from Pope Gregory XVI so that "an establishment so useful to private families and to the whole of civil society be promptly put into operation".
Following that transaction, the Cassa entered into an agreement with Banca Romana which allowed it to invest, in a sight current account, its daily liquidity surpluses, which previously remained interest-free.
Although the bank's own funds were almost wiped out by these events (returning to the values of the share capital paid in 1836), the Cassa managed to survive, subsequently strengthening its balance sheet in the last decades of the pontifical government, without however equaling the growth rates experienced in the early years, also due to the entry of competitors onto the Roman financial services market.
In this period, the Banco di Santo Spirito, which was controlled by the government's Istituto per la Ricostruzione Industriale, found itself in economic difficulties.