The time period for which a particular capital asset is held by its owner decides whether that asset is a short-term capital asset or a long term capital asset.
Shares of a company listed on foreign stock exchanges (unlisted securities for Income Tax purposes) shall be considered as LTCA if the same is held for more than 24 months while those held for 24 months or less shall be considered as STCA.
Tax rate with respect to LTCG and STCG applicable on Indian resident has been provided below
Capital Gains Tax Rate:
Short Term Capital Gains
Slab rates (Plus applicable cess and surcharge)
Long Term Capital Gains
20% (Plus applicable cess and surcharge)