"The next session is going to be extremely important. And half way through the next session, the numbers of the Upper House are also going to change. So I am reasonably optimistic, as far as the next session is concerned, that we may be able to push it through," Jaitley said.
Parliament's Budget session will start in last week of February.
"...Parliamentary obstructionism has prevented it from happening in the last two sessions".
The Goods and Services Tax (GST) that will subsume all indirect taxes like excise duty, service tax and sales tax into one uniform rate, is stuck in Rajya Sabha where main opposition Congress wants three changes.
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Congress stalled the passage of the Constitution Amendment Bill in last two sessions, derailing government's plan to roll out GST from April 1, 2016.
Jaitley said the concept of GST was first conceived in 2006 and the Constitution Amendment Bill was first introduced in 2011, but the UPA government could not build a consensus with the states.
Jaitley said the NDA Government after coming to power built broad consensus among the states and following that brought the Constitution Amendment Bill again in Parliament.
"I continue to discuss with the states and with all political groups, so that we can ensure its safe passage in the Upper House," he said.
The idea of GST was born in the earlier part of the last decade, he said. "Though people have been discussing this since the 1990s, radical idea of this kind takes time before a consensus can develop".
Jaitley also complimented Rural Development Minister
Chaudhary Birender Singh for bringing in "transformation" in Mahatma Gandhi National Rural Employment Guarantee Act (MGNREGA).
Schemes are "not cast in stone" and their modification is required with the passage of time, he said, adding that MGNREGA underwent change and new initiatives were taken to reach its benefits to people in a better way.
"As the Rural Development Minister has rightly said that a transformation has been brought in the implementation of this scheme. When a government scheme runs for many years, an attitude of indifference develops towards it. A kind of indifference towards it was growing by 2013-14 when the scheme has entered its seventh and eight years," Jaitley said.
"We should spend more on rural electrification, irrigation and roads to witness development of rural economy. The amount of funds we can put in these sectors, it would not only help improve the sector but also boost the economic growth of the country. This is the responsibility which we are undertaking through MGNREGA," he said.
Jaitley said there are political, social and economic arguments behind putting funds in rural sector when it is stressed. "The funds that we put in that will push the economic growth".
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Talking about political history of India, Jaitley said India made the best choice by going for Parliamentary democracy that resulted in stable governments barring one or two instances.
Besides unity and sovereignty, competitive and cooperative federalism has been the strength of the country, he said.
India, he said, has built three distinct institutions -- Election Commission, independent judicial system and a very professional army -- which helped it become a successful Parliamentary democracy.
"Even though we had the second largest Muslim population, our population remained insulated from global trend," he said.
India, he said, had its own share of terror threats especially from the Left wing extremists. "... This should not be long before the system is able to tackle this," he said.