Income from bitcoin(virtual currency) is treated as capital gain .?

The safest option is to treat it as income from others sources, however there are some people who have been holding the crypto currency since very long time for them it can be treated as Capital Gain, short term if held for less than 3 years. If u decide to treat it as short term capital gain or income from other sources then tax rate will be slab rate. If the asset was held for more than 3 years it may be treated as LTCG and tax rate would be 20%

you need to File ITR -3.

 

With regards to treatment of bitcoin income, depends on your position on it - it can be treated as capital gains - taxable at slab rates   (15% is applicable only for equity securities listed on Indian stock exchanges) or business income as may prefer.