National Internal Revenue Code (NIRC)
Section 69. Return of Information of Brokers. - Every person, corporation or duly registered general co-partnership (compania colectiva), doing business as a broker in any exchange or board or other similar place of business, shall, when required by the Commissioner, render a correct return duly verified under oath under such rules and regulations as the Secretary of Finance, upon recommendation of the Commissioner, may prescribe, showing the names of customers for whom such person, corporation or duly registered general co-partnership (compania colectiva) has transacted any business, with such details as to the profits, losses or other information which the Commissioner, may require as to each of such customers as will enable the Commissioner to determine whether all income tax due on profits or gains of such customers has been paid.