Corporation tax is the single largest source of income, contributing 21 paise to each rupee earned.
In January-March, annual growth slumped to 5.8 per cent, the slowest pace in 20 quarters.
The collections comprise of receipts by both the centre and state governments of GST.
In a Facebook post on GST, Jaitley said as many as 20 states are already showing more than a 14 pc increase in revenues.
The pension will be non-taxable only to those personnel who have retired due to any kind of disability.
Fiscal deficit target to as much as 3.6 per cent of GDP from an already upwardly revised target of 3.4 per cent.