The main stream of the economy of Begusarai is agriculture. Major part of the population in this district do farming related activities. Kharif, Paddy, Urad, Arahar, Masur, Rabi, Wheat, Macca, Gram, Matar, Tisi, Mustard, Sunflower are major crops of the district. Apart from that oilseeds, tobacco, jute, potato, tomato, andi and red chilies are main cash crops of the district. Begusarai has recently developed fruit farming including guava, mango, and litchi. Besides, a number of ancillary industries are also present in the district. At present, Indian Oil Corporation Limited (IOCL),  Barauni Thermal Power Station (BTPS) and  Barauni Sudha Dairy are main industries in Begusarai.