"I think it is all about the power of leadership... I think the credit (for rate cut by the RBI) should go to the political leadership, to our honourable Prime Minister and Finance Minister (Arun Jaitley)," Sinha told CNBCTV18.
"We are pursuing prudent fiscal policies saying that we are committed to sound economic management, fiscal roadmap of 4.1 per cent, 3.6 per cent, 3 per cent. That is how we have led and when we lead then obviously all the other institutions follow," he added.
"It is not just a rate cut. It is the turn of the cycle and that is what is important here. What we have demonstrated now is that the economic momentum that is picking up, the investments that are coming in," he said.
Describing RBI as an extraordinarily competent and professional organisation, Sinha said: "You have to understand the institutional environment. In the institutional environment, Parliament is supreme, the Prime Minister and the Cabinet are supreme and we have to do the work that we have to do to move the economy forward."
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Rajan, who had focused on quelling inflation since taking office in September 2013, lowered the benchmark repurchase rate to 7.75 per cent from 8 per cent, the first reduction since May 2013.
The minister said the government has demonstrated its will for economic reforms and that signal has now been fully amplified by the RBI in terms of the rate cut and so the economy is moved through an inflection point.
The minister noted that to grow 7-8 per cent, India will have to build productive capacity and work through the supply- side bottlenecks.
He said the government has been working towards improving infra like power to help manufacturing.