Though the banking sector in general has done well in reducing non-performing assets (NPAs), or loans defaulted by borrowers, new generation private sector banks have slipped on this front during 2006-07. Gross NPAs of new private banks have shot up by 55 per cent to Rs 6,287 crore during the year as against Rs 4,052 crore in the previous year, reversing the declining trend in the last four years, the Reserve Bank of India (RBI) has said. However, public sector banks, which were notorious in accumulating NPAs in the 1990s, have managed to bring down bad loans further — from Rs 41,358 crore during the year 2006 to Rs 38,968 crore in 2007. This is a 40 per cent decline from Rs 64,812 crore in 2004. The total NPAs of all commercial banks fell from Rs 51,097 crore to Rs 50,487 crore in 2007.The Reserve Bank of India has already noted the slippage. “The asset quality of new private sector banks, though comfortable, showed some signs of weakening,” the RBI said in its Report on Trend and Progress of Banking in India. The same is the case with foreign banks operating in India, with their gross NPAs rising from Rs 1,928 crore in 2006 to Rs 2,263 crore in 2007. However, old generation private banks managed to bring down their NPAs from Rs 3,759 crore to Rs 2,969 crore in 2007. “Defaults in the retail segment seem to have added to the NPAs. One large private bank which was very active in retail lending contributed the maximum to NPAs,” said an analyst.