The idea is to allow corporates to go for more capex and thus benefit the country's economy.
Moreover, EY has advocated for doing away with retrospective tax amendment, particularly in connection with the British telecom major Vodafone.
"Corporate tax, which is currently at 34 per cent including various surcharges, must be made free from any surcharge. If this happens, the corporate tax will obviously come down to 30 per cent.
The department has issued telecom giant Vodafone a reminder for what it claims to be Rs 14,200-crore capital gains tax dues, and has threatened to seize assets on non payment.
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"As far as the pending legacy matter of Vodafone case is concerned, it would be good if the government comes out with a bold step by burying the hatchet once for all, which was created by the previous governments at the Centre, by removing the retrospective tax amendment," he said.
Even as the government is looking to have broader consensus on important bills like GST, EY has advised the Modi government to start talking to non-Congress regional parties on GST issue.
"I would expect the government (to) start talking to non-Congress regional parties, as they are the ones which are likely to benefit the most whenever GST is implemented in future," he added.