New Delhi, May 14 (IANS): Finance Minister Arun Jaitley said on Thursday that foreign direct investment into India in 2014-15 had risen by 40 percent over the previous fiscal and hoped that the indirect tax reform that investors are looking to would happen by the next April deadline for the GST Bill.

The bill on the goods and services tax was on Tuesday sent to a select committee of the Rajya Sabha.

"I am still hopeful, in fact very hopeful, that we will be able to achieve this," Jaitley told reporters when asked about the GST Bill, on the sidelines of an event here.

Calling the GST the biggest tax reform since India's independence in 1947, he said it could add as much as 2 percentage points to its economic growth.

It is seen as the key to facilitating industrial growth and improving the country's business climate.

By subsuming most indirect taxes levied by the central and state governments such as excise duty, service tax, VAT and sales tax, the goods and services tax regime proposes to facilitate a common market across the country, leading to economies of scale and reducing inflation through an efficient supply chain.

The government wants to implement the new regime before April 2016.

The passage of the bill to become a law is, however, a lengthy process.

Being a constitution amendment bill, which was passed by the Lok Sabha, it needs to be passed by the Rajya Sabha with a two-thirds majority and then ratified by at least 15 state legislatures before being sent for the President's assent.