In the case of an account requesting 'Cash' trading permissions the minimum age requirement is 18 (for joint accounts, both parties must be at least 18 years of age). For clients of IB-Japan, the minimum age requirement for a 'Cash' account is 20 years of age.

In the case of an account requesting 'Margin' trading permissions the minimum age requirement is 21 (for joint accounts, both parties must be at least 21 years of age).

An individual or entity who would like to manage an account for a minor may do so using the UGMA/UTMA account structure.