This impact evaluation (IE) was designed to evaluate the integration of sanitation into the Pantawid Pamilyang Pilipino Program (4Ps), with an overall aim to test the effectiveness of a combination of hardware and financial subsidies to encourage adoption of improved sanitation facilities among the poorest households in rural areas of the Philippines. While the original research endeavored to measure health and nutrition outcomes, the final evaluation primarily focused on the upgrade and construction of latrines with the goal of achieving improved sanitation at the household level.