Kolkata is the main business, commercial and financial hub of eastern India.
Kolkata witnessed an economic decline from the late sixties till the late nineties. The city's economic fortunes turned the tide as the early nineties economic liberalization in India reached Kolkatas shores during late nineties.
Kolkata is home to many industrial units, of large Indian corporations, whose product range is varied and includes - engineering products, electronics, electrical equipment, cables, steel, leather, textiles, jewellery, frigates, automobiles, railway coaches, wagons.
Several industrial estates like Taratolla, Kalyani, Uluberia, Dankuni, Kasba, Howrah are spread throughout the urban agglomeration. A huge leather complex has come up at Bantolla. An export processing zone has been set up in Falta. Specialized setups like the country's first Toy Park, and a Gem and Jewellery Park have also been established.