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Tax loss harvesting saves real money. For most HENRYs, ₹30,000 to ₹1 lakh per year if done right. The catch is that very few people actually do it, mostly because nobody explained how it works.
Here’s the core idea, plain and simple.
What tax loss harvesting actually is
When you sell investments at a loss, you can use that loss to offset gains you’ve made elsewhere. If you have ₹2 lakh in capital gains from one fund and ₹50,000 in losses from another, you only pay tax on ₹1.5 lakh.
The losses don’t disappear if you don’t have gains to offset. They carry forward for up to 8 years for long-term losses, and up to 8 years for short-term losses too. So harvesting isn’t only useful when you have gains today. It builds a tax shield for the future.
When it works vs when it doesn’t
It works when you have actual paper losses on funds or stocks you no longer want to hold long-term, or when you have unrealized losses on positions you want to maintain exposure to but can take a tax break on.
It doesn’t work if you’re trying to harvest losses on assets you genuinely want to hold for decades and the loss is small. The tax saving doesn’t justify the friction.
The 30-day reinvestment rule explained
This is where Indian tax law differs from the US. The US has a wash sale rule that prevents you from selling an asset at a loss and buying it back within 30 days to claim the loss. India doesn’t have this rule for stocks and equity mutual funds. You can technically sell at a loss and buy back the same security the next day.
In practice, treat the 30-day window as a guideline rather than a rule, but verify with your CA based on your specific situation. Some practitioners interpret it more cautiously.
How to harvest in mutual funds
Step one. Pull a capital gains statement from your AMC or registrar. List all gains and losses in the current financial year.
Step two. Identify positions with losses you’d accept booking. The clearer cases are funds you no longer want to hold or positions where you can rotate to similar funds.
Step three. Sell the loss-making positions before March 31. Make sure the units have actually been redeemed in the financial year, not just placed.
Step four. If you want to maintain exposure, buy a similar fund. For example, sell one large-cap fund at a loss and buy a different large-cap fund. Same exposure, fresh purchase price, loss booked.
Step five. File the losses on your ITR. Short-term losses against any capital gains. Long-term losses against long-term gains only.
Mistakes that cancel the benefit
Selling without realizing the gain you wanted to offset is also a long-term gain that’s already over the ₹1 lakh exemption. If your gain is ₹80,000, it’s already tax-free, and harvesting losses adds nothing.
Selling close to year-end and missing settlement. The transaction must be completed in the financial year. Last week of March is risky.
Forgetting to carry forward losses if you don’t use them this year. They have to be reported on your ITR every year to remain valid.
Tax loss harvesting isn’t about avoiding tax forever. It’s about timing it. Push gains forward, accelerate losses today, and let the deferral compound. For HENRYs with active portfolios, it’s one of the highest-ROI activities of the financial year.
