Tax-Loss Harvesting: What It Is, How It Works, and Where the Money Actually Goes
Optimizing taxes is useful. Optimizing them blindly can cost you compounding.
Tax-loss harvesting is one of those ideas that sounds sophisticated - and is often misunderstood.
At its core, it’s simple.
Tax-loss harvesting = selling an asset at a loss to reduce your taxable gains.
You:
Sell an asset below your purchase price
Realize a loss
Use that loss to offset gains (now or in future years)
Nothing magical happens to your wealth.
What changes is how your outcomes are recorded for tax purposes.
Why is it done?
Because taxes are applied to realized gains.
If you’ve made profits elsewhere, a realized loss can reduce the amount you’re taxed on.
Without losses → you’re taxed on full gains
With losses → you’re taxed on net gains
You haven’t become richer.
But you’ve become more tax-efficient.
Why would someone intentionally take a loss?
This is where the confusion usually begins.
Why would you sell something at a loss when you don’t want to?
Because in doing so:
You had X
You sold X
You bought back X
Nothing actually changed in what you own.
But what you did was:
Move a ₹N loss from your holdings (where it was invisible)
into your tax records (where it becomes usable)
That movement allows you to reduce your tax liability.
So even though nothing changed in your portfolio:
The amount of money you send to the government reduces.
This is currently allowed within Indian tax rules, as there are no explicit wash sale restrictions.
A note on timing
We’ve just crossed the end of the financial year (March 31 in India).
If you did your tax-loss harvesting before the year closed, that’s ideal.
If you didn’t, this is as good a time as any to understand how it works -
so that you can do it actively going forward, rather than at the last minute.
How does it actually work?
This is where most confusion begins.
Let’s walk through a simple example using six fields:
Cash
Stock
Loss (nominal)
Loss (realized)
Short Term Capital Gains (STCG) Tax Savings (20%) (as per Indian tax rules)
Long Term Capital Gains (LTCG) Tax Savings (12.5%) (as per Indian tax rules)
One of the two tax columns (STCG or LTCG) will apply depending on whether the equity holding period is less than 12 months or more than 12 months (as defined under Indian equity taxation).
Step 1 - Start
Step 2 - Buy stock at ₹500K (~$5,000)
Step 3 - Price falls to ₹400K (~$4,000) (no sale)
At this point, you’ve lost ₹1,00,000 (~$1,000).
But only on paper.
The tax system doesn’t recognize this yet.
Step 4 - Sell at ₹400K (~$4,000)
This is the moment that matters.
The loss becomes real - not because your wealth changed,
but because you converted a price movement into a recorded outcome.
Step 5A — Buy back at ₹400K (~$4,000)
You are back in the market.
Except now, the loss sits separately as a usable tax asset.
While markets allow selling and buying the same stock on the same day, in practice many investors do this from the next day onwards for cleaner tracking and clearer tax reporting.
Where did the ₹1,00,000 (~$1,000) go?
It didn’t go anywhere.
It moved from:
Stock value (unrealized) → Realized loss (tax bucket)
Your total wealth is still ₹9,00,000 (~$9,000).
But earlier, the loss was invisible to the tax system.
Now, it is usable.
Step 5B - Buy back at ₹380K (~$3,800)
The extra ₹20,000 (~$200) stays in cash.
Step 5C - Buy back at ₹420K (~$4,200)
That ₹20,000 (~$200) moves from cash into stock.
Nothing disappears. Nothing is created.
Only one of these compounds
Look at the six fields again:
Cash
Stock
Loss (nominal)
Loss (realized)
Tax saving
Only one of these actually grows your wealth over time.
Stock
Everything else is static.
The hidden tradeoff
Tax-loss harvesting is not free.
Every time you do it, you:
Exit the market (even if briefly)
Move through cash
Re-enter at a new price
Which means:
You are temporarily stepping out of the only bucket that compounds.
This is where things go wrong
It’s easy to think:
“If some loss harvesting is good, more must be better.”
It isn’t.
Because losses only help if they offset gains.
Otherwise:
You are just accumulating idle tax assets
while risking missed compounding.
The real constraint
Tax-loss harvesting should not be driven by how much you’ve lost.
It should be driven by:
How much gain you actually need to offset
Short-term capital losses (STCL) can be carried forward for up to 8 years and set off against future gains (both short-term and long-term).
But that is a more tedious path.
In practice, it is better to:
Harvest only as much as is needed to offset gains for the given year.
Transaction costs and bid-ask spreads should also be considered, as they can reduce the benefit of harvesting losses.
The invisible cost
Let’s say you save ₹20,000–₹50,000 (~$200–$500) in tax.
But because you delay re-entry or mistime it:
The market moves
You miss ₹1,00,000–₹2,00,000 (~$1,000–$2,000) upside
You optimized taxes.
But you broke compounding.
Two systems at play
There are two systems you’re operating in:
The market system
Rewards time
Rewards staying invested
The tax system
Rewards realized outcomes
Rewards timing
Tax-loss harvesting sits in between.
And if you’re not careful:
You start optimizing for the tax system
at the cost of the market system.
So how much TLH is enough?
Not the maximum you can do.
But just enough to be useful.
Losses are valuable only when paired with gains.
Unpaired losses are idle.
The right way to think about it
Tax-loss harvesting is not about maximizing losses.
It’s about:
Converting unavoidable losses into usable offsets - without interrupting compounding.
Final thought
Don’t optimize taxes at the cost of being invested.
Compounding matters more.
Disclaimer
This is educational content, not financial, investment, tax, or legal advice.
Zenca shares perspectives and frameworks to help you think clearly - your decisions are your own.
Please think independently and do your own research.
I write to improve how we think about money.
If this helped you think more clearly about money, you can subscribe to Zenca to receive future essays directly.
Subscriptions are the only true ongoing signal I get that this work is valuable to others.
And if this resonated, take a few seconds to share it — it might change how someone else thinks about money too.