Rebalancing

You did the hard part already. You decided, calmly and in advance, that your money should sit 60% in equity and 40% in debt — a mix you can hold through a bad year without panicking. You wrote it down. You bought it. Good.

Then the market did what markets do. Equity had a strong run, debt plodded along, and one day you look at your statement and the pot is bigger — but the mix has quietly slid to 72:28. You never placed a single trade. You never decided to take more risk. Yet you now own a portfolio noticeably riskier than the one you signed up for.

So here is the question this module settles: when winners pull your mix off target, what — if anything — should you do about it? The instinct is to leave it alone, because touching a winner feels like a mistake. The answer is a small, unglamorous rule called rebalancing, and its whole job is to restore the risk you chose — not to guess what the market does next.

Start with the thing nobody warns you about. Your asset allocation does not stay where you put it. The moment two assets grow at different speeds — and they always do — the faster one takes up a bigger share of the pot. This slow slide away from your target is called drift, and it happens without a single decision on your part.

Walk through it in rupees. You start with ₹10,00,000 at 60:40 — that is ₹6,00,000 equity and ₹4,00,000 debt. A strong stretch lifts equity by about 44% while your debt sleeve gives back a little in a rising-rate spell. Now equity is worth roughly ₹8,64,000 and debt about ₹3,36,000, a pot of about ₹12,00,000 — and the mix has drifted to 72:28. illustrative

The trap is that drift only ever feels like good news. On the way up, more equity means a bigger number, and a bigger number feels like winning. Nobody experiences rising risk as a warning. That is exactly why it is dangerous: by the time the market turns, you are carrying 72% equity into a fall you planned to meet with 60%. The extra 12 points of risk were never a choice — they were an accident you failed to correct.

Rebalancing is the correction. It says: compare where the mix is to where you decided it should be, and if the gap is big enough, nudge it back. Nothing about it forecasts the next move. It is a rule you follow because you agreed to it in a calm moment, precisely so a loud market cannot talk you out of it later.

Here is the quietly beautiful part. To restore 60:40 from a drifted 72:28, you sell a slice of the thing that went up (equity) and add to the thing that lagged (debt). Read that again: rebalancing forces you to sell high and buy low, mechanically, without any judgement about valuations or timing. You are not brave enough to buy the loser and trim the winner on your own — almost nobody is. The rule does it for you.

To see the trade, work back from the target. Your pot is now ₹12,00,000. Sixty per cent of that is ₹7,20,000 — that is what equity should be. It is actually ₹8,64,000. So the repair is to move ₹1,44,000 out of equity and into debt, and you are back at 60:40.

Now, when do you check and act? Two honest rules, and you only need one:

• A rebalancing band — act only when any asset drifts more than a set distance from target, commonly ±5 percentage points. At 60% equity that means you do nothing until equity leaves the 55%–65% corridor. Bands respond to how much the market moved, so they trade rarely and only when it matters.
• A calendar rule — check on a fixed date, usually once a year, and repair whatever has drifted. Simple, hard to forget, and immune to the temptation to peek daily.

For most beginners the calmest workable rule is a blend: check once a year, and only trade if something has drifted past about ±5 points. That captures nearly all the risk control while keeping trades — and their costs — to a minimum. What you should not do is watch daily and repair every small wobble; that is not discipline, it is fidgeting, and it just multiplies cost and tax for no real benefit.

Rebalancing by selling is not free in India, and the biggest cost is usually tax. This is the part beginners under-read, so let us make it concrete. When you sell equity (or an equity fund) to rebalance, you realise a gain, and a realised gain is taxed. illustrative

Under the rules in force after July 2024:

• Long-term capital gains — on equity held more than a year — are taxed at 12.5%, but only on gains above ₹1,25,000 in a financial year. The first ₹1.25 lakh of long-term equity gains each year is free.
• Short-term capital gains — on equity held a year or less — are taxed at 20%, with no ₹1.25 lakh shelter.
• On top of tax, some funds charge an exit load — a small penalty (often ~1%) for selling within a set window, commonly a year.

Put numbers on our trade. You sell ₹1,44,000 of equity. Because equity grew ~44%, roughly ₹44,000 of that sale is gain. If the units are long-term, that ₹44,000 sits under the ₹1,25,000 exemption — so the LTCG bill is about ₹0 this year. A modest, long-held rebalance often costs far less tax than people fear. But sell the same ₹1,44,000 within a year of buying and it is short-term: 20% on the full ₹44,000 is about ₹8,800, plus any exit load. Same trade, very different bill — holding period is doing the work.

The cost does bite at larger scale. Trim a ₹50,00,000 portfolio and the gain realised can run well past ₹1.25 lakh, so real LTCG is due. That leads straight to the most useful habit in this whole module:

The widget below lets you feel both routes. Set your target, let equity run, and watch the mix drift. Then compare selling the winner (fast, but it realises gains and may trigger tax) against directing fresh money to the laggard (slower, needs spare cash, but no sale and no tax). Push equity's gain higher and watch both the drift and the sell-route tax grow with it.

It would be dishonest to sell rebalancing as a free lunch. In a long, sustained bull run, trimming equity back to target usually leaves you with a slightly lower return than if you had let the winner ride. That is not a flaw to hide — it is the whole bargain. You are giving up a little upside in exchange for a mix that survives the next fall and a rule that stops you over-owning risk at the worst moment.

This is why rebalancing is best understood as risk control and behaviour insurance, not a way to earn more. Charles Ellis's lesson for ordinary investors is that most of us are beaten not by missing the best fund but by our own unforced errors — chasing, panicking, over-owning risk after a good run. A simple rebalancing rule removes one of the biggest of those errors by making the sell-high-buy-low decision for you, in advance, when you were calm. Judge it by the crash you avoided being over-exposed to, not by the rally you slightly under-rode.

Knowing the rule protects you from silent risk creep. It does not do everything, and pretending it does is its own trap.

It is not market-timing. Rebalancing does not predict tops or bottoms and does not need to. It reacts to your mix, not to a forecast. If equity keeps running after you trim, the rule was still right — it was never trying to catch the peak.

It does not guarantee a higher return. As the last section admitted, it often costs a little return in a bull run. Its payment is risk control, not performance.

It does not fix a wrong target. Rebalancing faithfully restores whatever mix you chose — so if 60:40 was wrong for your goals and horizon, rebalancing just keeps you reliably wrong. Getting the target right is the work of the earlier allocation modules; this module only keeps you at it.

And it does not tell you what to buy. Nothing on this shelf ever will. Rebalancing is a maintenance rule for a plan you already own — a way to keep the risk you chose from drifting into a risk you didn't.

The same handful of confusions send beginners wrong. Name them and they lose their grip.

1. Reading a bigger pot as a safer pot. After a rally the number is larger and the risk is higher. Size and risk are different questions; drift raises the second while flattering the first.

2. Calling drift 'conviction'. "Let the winner run" feels bold, but for an allocation it just means letting one asset quietly rewrite the risk you agreed to. Conviction is a decision; drift is the absence of one.

3. Rebalancing too often. Repairing every small wobble adds tax, exit loads, and temptation for no real risk benefit. A band or an annual check captures nearly all the value with a fraction of the cost.

4. Assuming the tax is always huge. A modest, long-held trim often fits under the ₹1.25 lakh LTCG exemption and costs little or nothing. Fear of a "fortune in tax" makes people skip a repair they should make — check the actual gain first.

5. Forgetting the fresh-money route. While you are still contributing, new SIP money and bonuses can repair drift with no sale and no tax. Selling should be the last resort, not the reflex.

6. Judging the rule inside a bull run. From within a rally, risk control always looks like a cost. It is judged across the full cycle — including the fall — or not honestly judged at all.