The study was carried out in Bishnupur district of Manipur with an objective to calculate the economics of the Paddy-Fish farming system. The research is based on the data collected by using proportionate sampling from a total of 110 farmers comprising of 76 Rotational, 24 Concurrent, 5each of Paddy and Fish monoculture system farmers. In the study area, four different types of Paddy-Fish farming system were identified. There were basically the two main Paddy-Fish production systems, Concurrent culture – growing the ûsh together with the paddy in the same area and rotational culture – where the paddy and ûsh are grown at different times. And other two were Paddy and Fish monoculture system. Per hectare cost was highest in Concurrent Paddy-Fish farming system among the four different systems. While the per hectare net income estimated was found to be highest in Rotational Paddy- Fish farming system indicating that in the study area Rotational system of Paddy-Fish was more economical as compared to Concurrent system and also that of Fish and Paddy monoculture.

Keyword: Concurrent system; Cost and Return; Rotational system;