contingency fund
From Longman Business Dictionarycontingency fundconˈtingency fund (also contingency account), contingency reserve [countable]COMMERCEFINANCE an amount of money that is kept in case of an event that causes losses in the futureUnder the five-year plan a contingency fund was to be created to cope with any international or domestic variables.The board is confident the contingency reserve will cover these additional expenses. → fund