English to Russian Tech/Engineering Automation & Robotics

Помогите, пожалуйста разобраться в каом смысле здесь используется surplus:
When the organization committee shall have designated the cities in which Federal reserve banks are to be organized, and fixed the geographical limits of the Federal reserve districts, every national banking association within that district shall be required within thirty days after notice from the organization committee, to subscribe to the capital stock of such Federal reserve bank in a sum equal to six per centum of the paid-up capital stock and surplus of such bank.
Бывает ли у банка профицит или это нераспределенная прибыль еще не существующего банка?