West Bengal is a state in the eastern region of India along the Bay of Bengal. With over 91 million inhabitants, it is the fourth-most populous state and the fourteenth-largest state by area in India. Covering an area of 88,752 km2 (34,267 sq mi), it is also the eighth-most populous country subdivision of the world. Part of the Bengal region of the Indian subcontinent, it borders Bangladesh in the east, and Nepal and Bhutan in the north.

 It also borders the Indian states of Odisha, Jharkhand, Bihar, Sikkim and Assam. The state capital is Kolkata, the third-largest metropolis, and seventh largest city by population in India. West Bengal includes the Darjeeling Himalayan hill region, the Ganges delta, the Rarh region and the coastal Sundarbans. The state’s main ethnic group are the Bengalis, with the Bengali Hindus forming the demographic majority.

As of 2015, West Bengal has the sixth-highest GSDP in India. GSDP at current prices (base 2004–2005) has increased from Rs 2,086.56 billion in 2004–05 to Rs 8,00,868 crores in 2014–2015, reaching Rs 10,21,000 crores in 2017–18. GSDP percent growth at current prices varied from a low of 10.3% in 2010–2011 to a high of 17.11% in 2013–2014. The growth rate was 13.35% in 2014–2015. The state’s per capita income has lagged the all India average for over two decades. 

As of 2014–2015, per capita NSDP at current prices was Rs 78,903. Per-capita NSDP growth rate at current prices varied from 9.4% in 2010–2011 to a high of 16.15% in 2013–2014. The growth rate was 12.62% in 2014–2015.

In 2015–2016, percentage share of Gross Value Added (GVA) at factor cost by economic activity at constant price (base year 2011–2012) was Agriculture-Forestry and Fishery—4.84%, Industry 18.51% and Services 66.65%. It has been observed that there has been a slow but steady decline in the percentage share of industry and agriculture over the years. 

Agriculture is the leading economic sector in West Bengal. Rice is the state’s principal food crop. Rice, potato, jute, sugarcane and wheat are the state’s top five crops. Tea is produced commercially in northern districts; the region is well known for Darjeeling and other high-quality teas. State industries are localised in the Kolkata region, the mineral-rich western highlands, and the Haldia Port region. The Durgapur-Asansol colliery belt is home to a number of steel plants. 

Important manufacturing industries include: engineering products, electronics, electrical equipment, cables, steel, leather, textiles, jewellery, frigates, automobiles, railway coaches and wagons. The Durgapur centre has established a number of industries in the areas of tea, sugar, chemicals and fertilisers. Natural resources like tea and jute in nearby areas has made West Bengal a major centre for the jute and tea industries.

Years after independence, West Bengal is dependent on the central government for help in meeting its demands for food; food production remained stagnant, and the Indian green revolution bypassed the state. However, there has been a significant increase in food production since the 1980s and the state now has a surplus of grains. The state’s share of total industrial output in India was 9.8% in 1980–1981, declining to 5% by 1997–1998. In contrast, the service sector has grown at a rate higher than the national rate. The state’s total financial debt stood at ₹1,918,350 million (US$25 billion) as of 2011.