The Centre is aiming to implement the landmark indirect tax regime, Goods and Services Tax, from April next year.
"We have kept a very stiff target and the reason is that there is a great national aspiration in support of a reform that GST is, and state after state within a period of 20-25 days have kept on ratifying it because they stand to benefit the most," Jaitley said here at the Economist India Summit.
Once the assent is granted by President Pranab Mukherjee, the constitution amendment bill will have to be notified.
After notification and constitution of the GST Council, Jaitley said, there are obviously some pending issues, which the council will have to resolve.
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"So we have the months of September and October and parts of November to do that. So there is a lot of work to do and if you are able to successfully transact those issues, then in the winter session of Parliament the central legislations, with some drafts in public domain, will have to be brought in.
Jaitley added that the passage of central laws, GST Bill and the IGST, are among the important economic legislations for the government.
"But more important along with these legislations is I think if you ask me in terms of economic priorities even outside parliament I would say that certainly implementation of GST is the top priority...," he added.
Reforms in the government budgeting like removal of
distinction in non-plan and plan expenditure, merger of Railway Budget with General Budget, focusing on outcomes through an improved Outcome Budget document, all needed to be reflected in the GFRs, it added.
The statement said the increased focus on Public Finance Management System (PFMS), reliance on the direct benefit transfer (DBT) scheme to ensure efficient delivery of entitlements, introduction of new e-sites like Central Public procurement portal, government e-marketing (GeM) portal, non-tax revenue portal have also necessitated revision of the existing GFRs to keep them in tune with the changing business environment.