For years, a large part of the appeal of market-linked debentures was tax. A listed MLD held for more than a year was treated as a long-term capital asset, and gains were taxed at a concessional rate. That is what made a moderate headline return look compelling on a post-tax basis.
That ended with the Finance Act 2023, which introduced Section 50AA of the Income-tax Act, 1961 with effect from 1 April 2023. Gains on the transfer, redemption or maturity of a market-linked debenture became deemed short-term capital gains, taxed at the investor's applicable slab rate, regardless of holding period. The Finance (No. 2) Act 2024 extended similar treatment to unlisted bonds and debentures transferred, redeemed or maturing on or after 23 July 2024.
The Income-tax Act, 2025 replaced the 1961 Act with effect from 1 April 2026, and carried this treatment forward unchanged as Section 76. So the rule is the same, but the provision to quote today is Section 76 of the Income-tax Act, 2025, not Section 50AA. Securities transaction tax paid is expressly not deductible in computing the gain.