"..In the current political scenario, federalism is at centre stage..When we start collecting taxes at one point, it will be a challenge for the Centre to make states understand that it will lead to increase in tax collection and there rights will not be hurt," Jaitley said.
The discussions on this proposal needed to be taken to states as the present environment in the country was of coalition politics and "states do not have trust on the Centre," he said.
"If we abolish these taxes and if we apply around 1 or 1.5 per cent of expenditure or transaction tax, then we will get revenue to the tune of around Rs 40,000 lakh crore," Gadkari had said.
Terming the proposal to replace income tax and excise with a single tax on banking transaction as "attractive", Jaitley said there are several questions which have to be answered before it is implemented.
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"..At present, society is distraught with excessive taxation, complex taxation and Inspector Raj and that's why this proposal looks attractive, but there are many questions in implementation of this. After that, it (has to) be taken to different political parties, states and experts," Jaitley said.
He was speaking at a seminar organised by Institute of Chartered Accountants of India on 'Simplification of Tax Laws in India'.
At the seminar, Ramdev put forth his proposal for a single tax -- Banking Transaction Tax -- in place of direct tax (income tax) and all indirect taxes -- excise, customs and sales tax.