From Longman Business Dictionarycapital requirementˌcapital reˈquirementFINANCE1[countable] the capital needed by a company to operate, grow etcThe company’s working capital requirement was decreasing.2[countable] the capital that a government says that a financial institution must have in relation to the amount that it lends, so that it can operate safelyThe Fed believes higher capital requirements are needed to deter unusually risky lending by banks. → requirement