Tax rates on investments gains are categorized as long term & short term capital gains.
Long term capital gains
Long Term investments that are held for more than 12 months are termed as long term capital assets. Profit on sale of such assets is termed as long term capital gain (LTCG) which as per the latest Budget notification will attract nil tax.
Short term capital gains
Shares that are held for less than 12 months are classified as short term capital assets which as per the latest Budget notification will attract 15% tax.