"The rumours about GST implementation being delayed are false. Please do not be misled by it," Revenue Secretary Hasmukh Adhia said in a Twitter post today.
The GST -- a unified tax structure across a wide range of goods and services that will replace various taxes levied by the Centre and state governments -- is scheduled for rollout from July 1.
The finance ministry in a statement said preparations are in full swing for a smooth implementation from the scheduled date.
The statement came amid murmurs about the IT network's inadequate preparedness to handle a massive 300 crore invoices that would be generated per month and could face teething problems.
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Some industry groups too want some more time to change to the new system of filing tax.
The Centre-State GST panel, called the GST Council, has fitted over 1,200 goods and an array of services in the four- tier tax slabs of 5, 12, 18 and 28 per cent and is adjusting demands for change.
GST is expected to simplify the tax collection procedure, making it easier to administer and enforce, as well as help remove double taxation at various levels.
GST is estimated to add 2 to 4 percentage points to the GDP.
After the last meeting of GST Council on Sunday, Jaitley had said the Centre and states have completed discussion on most of the issues.
"Irrespective of the date in which it starts, some people will say they are not ready, so they have no option but to get ready... You require an honest intent for that," he had said, to a query that small traders and artisans were not technologically ready for meeting GST compliance.