"I confirm our commitment to new wave of reforms," Singh, widely credited with opening up India’s economy in 1991 while finance minister, said in a speech late Friday.
He added that he welcomed the "national focus on corruption because it will, as it already has to an extent, generate public pressure in favour of more reform".
The government has been hit by a slew of corruption scandals, ranging from a cash-for-votes controversy and the cut-price sale of telecoms licences to graft surrounding last year's Commonwealth Games.
Singh's own "Mr Clean" reputation has been tainted by the scandals,