The biggest loser among the banks was state-run Bank of India, which was down 3.28 per cent at Rs 339 at 1250 hrs on the Bombay Stock Exchange.
Country's largest lender State Bank of India dropped nearly two per cent and was trading at Rs 2,000. The largest private lender ICICI Bank dipped 2.63 per cent and was trading at Rs 1,074.
Punjab National Bank fell 2.63 per cent, while Union Bank dropped 2.67 per cent.
Chidambaram announced a Rs 60,000-crore relief package for farmers, including complete waiver of loans given to small and marginal farmers.
He proposed to waive agricultural loans given by scheduled commercial banks, regional rural banks and cooperative credit institutions to farmers up to March 31, 2007 and due for December 31.