Most investors either never rebalance (and end up with a portfolio that's 90% equity by accident after a good run) or rebalance constantly out of anxiety (and rack up taxes and costs for no real benefit). The sweet spot for almost everyone is once a year — same month, same process, no emotion involved.
Say you started with 70% equity and 30% debt. After a strong equity year, that mix can drift to 80/20 without you doing anything — the equity portion simply grew faster. Now your portfolio is riskier than you originally chose. Rebalancing brings it back to 70/30, which means selling a bit of what did well and adding to what lagged. It feels wrong in the moment. It's exactly why it works — you're systematically buying low and selling high instead of chasing whatever just went up.
| Step | What to do |
|---|---|
| 1. Pick a fixed date | Same month every year — birthday, financial year end, whatever you'll actually remember |
| 2. List current values | Add up equity, debt, gold, cash across all accounts and folios |
| 3. Compare to target | Your original allocation plan (e.g. 70:20:10 equity:debt:gold) |
| 4. Check the drift | Only act if any category is off by more than 5-7 percentage points |
| 5. Rebalance | Redirect new SIPs/lump sums first; sell existing units only if drift is large |
| 6. Record it | Note the date and new allocation so next year's comparison is easy |
The cheapest way to rebalance is with fresh cash, not by selling. If your equity allocation has grown too large, simply direct your next few months of SIP or lump-sum investment entirely into debt or gold funds until the ratio corrects itself. This avoids capital gains tax and exit loads entirely. Only sell existing equity units when the drift is too large to fix with new money alone, or when you're also using the opportunity to book long-term gains within your annual tax-free LTCG limit.
Some investors prefer trigger-based rebalancing over calendar-based: rebalance whenever any asset class moves more than 5-7 percentage points from target, whenever that happens to fall in the year. Both approaches work. What doesn't work is checking your portfolio every week and adjusting on every wobble — that's not rebalancing, that's reacting, and it usually costs you more in taxes and mistimed decisions than it saves.
Target: 70% equity, 30% debt on a ₹10 lakh portfolio (₹7L equity, ₹3L debt). After a strong year, equity grows to ₹8.5L and debt stays near ₹3.1L — total ₹11.6L, equity now at roughly 73%. That's within a normal drift band, so no action needed. But if equity had grown to ₹9.5L against ₹3.1L debt (about 75%), you'd redirect the next several SIP instalments into debt, or trim a small equity chunk, until you're back near 70:20:10 or whatever your actual target is.
A market crash is not automatically a rebalancing trigger — check whether your allocation has genuinely drifted, not just whether the news feels dramatic. Similarly, a rally isn't a reason to add more equity beyond your target just because it's "working." The entire point of a target allocation, discussed in more depth in our asset allocation basics piece, is that it was chosen for your goals and risk tolerance in a calm moment — rebalancing simply restores it after the market's mood swings pull it out of shape.
Rebalancing once a year isn't glamorous and it won't make headlines, but it quietly does two things that matter more than any hot fund pick: it keeps your risk level where you actually chose it, and it forces a small, disciplined version of "buy low, sell high" without you having to predict anything. Put a reminder in your calendar today for the same date next year — that's the whole strategy.