@sk124 , financial accounts would generally be liquid cash or CDs , that are essentially and quickly li convertible to cash.
A brokerage account with stocks and bonds etc. would be "other" . However, a brokerage holding cash for investment purposes would be a custodial account. Ditto for Pension accounts would mostly be classed as custodial in nature. The form is trying to cover all liquid and semi liquid accounts for purposes of FATCA reporting.
Note FBAR filing is only cash in bank / financial accounts which you own and control OR have signature authority over ( may be operated/ owned by others )
Does this help ?
