"Viewed from a global perspective, India appears poised to enter a period of powerful progress that could carry widespread and profound benefits," Lipsky said at the Exim Bank's commencement day celebrations here.
He said this exciting period of "accelerated progress" could encompass many important social, economic and financial aspects. Investor expectations are favourable both because of promises of reforms and because of problems evident in other emerging markets, he said.
"But this highly encouraging outcome can't be taken for granted. It will be realised only if opportunities are seized, including through a combination of reforms and new investment," he said.
Lipsky, who is a senior fellow at Johns Hopkins University, had served as IMF's Deputy Managing Director from September 2006 to August 2011, as well as its acting Managing Director during May-July 2011.
He said that the biggest challenge is to improve productivity on a sustained basis. "The key challenge will be to boost productivity significantly, and on a sustained basis," he said.