The Pittsburgh Summit, which will bring together a group of countries that accounts for 90 percent of the global output, 80 percent of world trade and two-thirds of humanity, is also expected to issue a declaration or a communique.

Ahead of the summit, India has also committed to invest up to $10 billion in the IMF as part of the major thrust to wrest a greater say in the running of the international financial institution and replenish the fund to help countries struggling in the current financial crisis.

Besides India and the US, the G20 comprises Argentina, Australia, Brazil, Canada, China, France, Germany, Indonesia, Italy, Japan, Mexico, Russia, Saudi Arabia, South Africa, South Korea, Turkey, Britain and the EU.