The Operations and Finance Department takes charge of providing effective, timely and facilitative auxiliary and logistical services to the day-to-day operation of the Institute and its research projects. It also provides technical advice and assistance in various areas of the administrative services such as personnel management and development, financial management and control, accounting, property and supply procurement and management, records management, general utility, housekeeping and transport.

The department also monitors the investment operation of the Institute's Endowment Fund in order to maximize the returns to be generated from its investment and at the same time preserve the value of its principal.

The department is also responsible for providing PIDS management with the financial status of the Institute's various research projects to enable them to formulate the necessary courses of action in order to maximize the utilization of its resources.

Finally, the Administrative and Finance Department provides the necessary linkage, cooperation and working relationship with various government agencies like the Commission on Audit, Civil Service Commission, Career Executive Service Board, Department of Budget and Management, Presidential Management Staff/Government Corporate Monitoring and Coordinating Committtee, Senate, House of Representatives, etc.. The Department has 3 divisions, namely: the Administrative Division, Finance Division and Accounting and Control Division.