"A Bitcoin can at best be described as a private currency, rather than a security or a commodity. If the seller is a regular trader the income would be business income, else it would be in the nature of capital gains," says Nishith Desai, international tax expert. Authorities in Canada have issued a similar guideline. Capital gain is the difference between the sale proceeds minus the cost of acquisition. Courts have held that if the cost of acquisition cannot be determined no capital gains arise.
"The Income Tax Act has carved out exceptions, holding that the cost of acquisition will be nil in cases of certain assets like goodwill or trademarks. In such cases, the entire sale proceeds attract capital gains tax levy. This exception doesn't cover Bitcoins," adds Desai. Thus in some instances, the investor could enjoy tax-free income. But for those who have mined Bitcoins, even if the cost cannot be easily determined, it is likely that income on sale will be treated by the authorities as taxable business income.
http://articles.timesofindia.indiatimes.com/2013-12-15/internet/45215410_1_mtgox-bitcoin-transactions-currencythough capital gains tax can be imposed for the sale of BTC in India, i don't think it covers for the sale abroad or at exchanges in other countries.
For example if u sell your BTC in MTGox and transfer those funds into your Indian bank account it can either be considered as
1) income from a forex trade(if the Indian Govt consider it as a currency or commodity) or just a simple trade done on a overseas market
OR
2) income from a software export, because BTC has not been recognized as a legit currency by any Govt
In both the cases the Indian Income Tax Department does have provided Tax Benefits. But the forex conversion charges would be imposed for these by the banks.
So I think the govt should come up with regulations specifically for BTC and other crypto currencies(each coins should be named, with new ones to be added with periodical updates)
or
just enjoy the foreign funds coming in and make use of it for large current account defecit we have... lols