Tax planning using capital losses under the new Income-tax Act 2025 is critical for investors in stocks and mutual funds. The Income-tax Act, 1961 has been repealed and a much more organized Income-tax Act, 2025 (ITA 2025) has come into place. The tax benefits of stock and mutual fund losses incurred under the historical Income-tax Act, 1961 need to be translated into tax benefits in future tax years under the ITA 2025.
This Article explains the Transition Rules, with particular reference to how losses in stocks and in a fund, incurred prior to the date of commencement of the Act, are consolidated and carried forward to be set against profits in subsequent tax– years; it also explains the safeguards afforded to investors under the said Rules and tax planning in that context.
- The Transitional Protection Framework
A definitive Transitional Protection Framework has been created by Parliament to protect against loss of prior tax claims, which were not provided for in the new Act. Stock and MF losses, therefore, would continue to be carried forward to later tax periods as were done under the historical Income-tax Act, 1961.
| Statutory Component | Provision & Operational Impact Under ITA 2025 |
| The Transition Shield | Section 536 acts as the legal saving clause, specifically validating capital losses processed under the older 1961 Act framework. |
| Cut-off Deadline | Any verified short-term or long-term loss computed prior to April 1, 2026, transitions automatically without friction. |
| The Horizon Rule | The statutory limit of 8 assessment years for carrying forward unabsorbed equity, mutual fund, and ETF losses remains completely untouched. |
- Operational Set-Off Architecture
Process for Set-off of Assets within the Tax Payer’s Company has always been separate from the rest of tax processing and has not changed as legacy parameters for short-term and long-term were already being used for Loss application.
| Loss Category | Holding Period | Permissible Offsets | Tax Rate Cushioned |
| Short-Term Capital Loss (STCL) | Less than 12 months | Both STCG and LTCG | Protects against 20% short-term tax liabilities |
| Long-Term Capital Loss (LTCL) | 12 months or greater | Strictly LTCG only | Protects against 12.5% long-term tax liabilities |
- Strategic Tax Harvesting & Optimization
In your planning, it is strategic to ensure that unabsorbed losses are just utilized against tax free zones created by law and not wasted by being applied against lower gains in a wrong manner and thus having a lower value.
| Scenario / Threshold | Strategic Action & Optimization Logic |
| Exemption Floor (Gains less than or equal to ₹1.25 Lakh) | Do not offset. Long-term capital gains up to ₹1.25 lakh per financial year are already completely tax-free. Offsetting losses within this range yields zero economic benefit. |
| Surplus Gains (Gains greater than ₹1.25 Lakh) | Targeted deployment. Direct your carried-forward LTCL exclusively to neutralize gains crossing the exemption barrier, successfully deflecting the 12.5% tax rate. |
The Non-Negotiable Compliance Deadline
The Non-Negotiable Compliance Deadline for filing of Income Tax Return (ITR) of taxpayers remains unchanged under the new Income-tax Act 2025. The rule of tax loss harvesting as practiced heretofore shall continue to remain in force and the taxpayer shall be required to file his/her ITR within the applicable statutory time period for all years in which he/she is carrying forward of unabsorbed partially absorbed losses (also referred to as tax losses) in subsequent years.
The losses incurred in stock market are documented, genuine and are being verified by respective broker’s statements. However, it would be a case of loss to a taxpayer if he does not file ITR in time even after having losses in stock market.
The Bottom Line
Tax loss harvesting for retail investors has become so much easier under the new laws. They can monitor their portfolios on an ongoing basis and harvest tax losses on a prudent basis. While comparing the deductions allowed in respect of their tax free thresholds with the gains in their portfolios, they would also note the losses in the past to ensure that these are utilized to protect their gains in the market. Also, as a cornerstone of an investor, they must also note to file their ITRs on or before the last date.
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