From Longman Business Dictionary
prudencepru·dence /ˈpruːdəns/ noun [uncountableU]1when you are sensible and careful to avoid unnecessary risksSYN CONSERVATISMTheir financial reserves have been built up over many years through a combination of prudence and innovation.
2ACCOUNTING the rule that a business should not state an asset value, possible profit etc to be bigger, or a possible loss to be smaller, than it actually might be