Tiruvannamali is a temple town and a major pilgrimage centre in Tamil Nadu. The town is the marketing and service town for the surrounding places. Being the administrative headquarters of the Tiruvannamalai district, Tiruvannamalai has a lot of teritiary sector activities. Trade and commerce and service activities are the major contributors to the economy of the town. As of 1991, 7.93% of the population was involved in primary sector, 21.34% in secondary sector and 70.73% in teritiary sector activities. The town had a female work participation of 11%. Due to the urbanisation from 1971, there has been dip in primary sector activities and a proportional increase in the teritiary sector activities. There is limited agricultural activity within the town limits. The secondary sector involves manufacturing and construction, whose growth has remained stable over the decades. There are a number of oil mills, rice mills and agro based industries within the Tiruvannamalai town limits. The teritiary sector activities of trade, commerce, transport, storage, communication and other services has been increasing due to the increasing number of tourists to the town. The patronage to Girivalam has increased informal economic activities around the town. The major commercial activities are concentrated around Car Street, Thiruvoodal Street, Kadambarayan Street, Asaliamman Koil Street, Sivanpada Street and Polur Road.
All major nationalized banks such as State Bank of India, Indian Bank, Central Bank of India, Punjab National Bank, Indian Overseas Bank, Bank of India and private banks like ICICI Bank, Karur Vysya Bank have their branches in Tiruvannamalai. All these banks have their automated teller machines located in various parts of the town
