Totten trust

a savings account deposited by someone who makes themselves the trustee for a beneficiary and who controls it during their lifetime; afterward the balance is payable to the previously named beneficiary

預金者自身が受益者のための受託者となって預け入れ、生前に管理し、死後はあらかじめ指定された受益者に残高が支払われる預金口座