The study aimed at developing, constructing and and assessing the performance of a rotary vermisorter as to its throughput capacity, retention time and sorting time. It further aimed at determining the economic analysis in terms of net cost, net income and return of investment. This development technological research that was conducted at Iloilo State College of Fisheries (ISCOF) -Dingle campus, Agri-eco tourism farm at Bongloy, Dingle, Iloilo, Philippines. The developed vermisorter is made of locally available materials. It consists of six (6) main parts: 1) the frame, 2) transmission assembly, 3) motor, 4) inlet hopper, 5) sorting cylinder, and 6) discharge hopper. It has a throughput capacity of 3.8 tons/hour. The machine can be made by locally in 5 to 7 day of continuous working at a cost of twenty-five thousand pesos (PhP 25,000) including labor cost. The data on the performance of rotary sorter were gathered using the weighing scale and stop watch and kilowatt-hour meter. Data were analyzed employing mean and percentages. Cost analysis of
operating the machine revealed that it can sort vermiworm from vermicast at PhP 1.37 per bag. The Return of Investment (ROI) is +885.89 percent, with a payback period of 41.2 days. The machine is environmentally-friendly and it can reduce the energy requirement and can sort vermicompost easily.