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Why this matters
You carefully chose a 60/30/10 equity-debt-gold allocation. But after a bull market, your portfolio silently drifted to 78/18/4. You are now taking far more risk than you signed up for. If the market crashes 40%, your portfolio drops 31% instead of the 24% you planned for. Rebalancing is the discipline that prevents this drift from destroying your financial plan.
What Is Portfolio Rebalancing?
Rebalancing is the process of realigning the weightings of assets in your portfolio back to your original target allocation. You do this by selling assets that have grown beyond their target weight and buying assets that have fallen below it. It is the investment equivalent of pruning a garden.
Before & After Rebalancing
Why Portfolios Drift
Different asset classes grow at different rates. In a bull market, equity can return 30-40% while debt returns 7%. Over even one year, this dramatically shifts your allocation away from your target.
Asset Growth Divergence Over 3 Years
Starting with ₹60L equity + ₹30L debt + ₹10L gold, equity grows to ₹1.17Cr — now 72% of the portfolio
Calendar Rebalancing
The simplest approach: check your portfolio at fixed intervals and rebalance back to target regardless of how much it has drifted. Most experts recommend annual or semi-annual rebalancing.
| Frequency | Pros | Cons | Best For |
|---|---|---|---|
| Annual | Minimal effort, fewer tax events | May miss large drifts | Most investors |
| Semi-Annual | Good balance of effort and control | Twice the tax events | Moderate portfolios |
| Quarterly | Tighter control on drift | More tax events, more effort | Large portfolios (₹1Cr+) |
| Monthly | Maximum control | Excessive for most; high tax drag | Not recommended |
Threshold Rebalancing
Instead of checking on a fixed schedule, you rebalance only when an asset class drifts beyond a set tolerance band. Common thresholds are 5% (tight) or 10% (loose) absolute deviation from target.
Threshold Rebalancing Bands
Target: 60% Equity, Tolerance: ±5%
Rebalance only when equity breaches the 55-65% band — no action needed inside the band
Tax Implications of Rebalancing in India
Rebalancing requires selling overweight assets, which triggers capital gains tax. Understanding the tax impact helps you rebalance smartly and minimize the government's cut.
| Asset Sold | Holding < 12 months | Holding > 12 months |
|---|---|---|
| Equity / Equity MF | STCG @ 20% | LTCG @ 12.5% (above ₹1.25L) |
| Debt MF | Slab rate (up to 30%) | Slab rate (no indexation) |
| Gold ETF | Slab rate | 12.5% (after 24 months) |
| PPF | N/A (locked) | Tax-free on maturity |
Tax-Smart Tip: Rebalance using LTCG-eligible holdings first (held > 12 months). Use the ₹1.25L annual LTCG exemption on equity. If you need to sell ₹5L of equity, spread it across 2 financial years to use the exemption twice. This can save you ₹15,000-30,000 in tax.
Rebalancing With New Money (The Best Strategy)
The most tax-efficient rebalancing strategy for Indian investors: instead of selling overweight assets, redirect your monthly SIP towards underweight assets until the portfolio returns to target.
With New Money (Tax-Free)
- →No selling = no capital gains tax
- →Redirect SIP to underweight asset
- →Works for small drifts (3-5%)
- →Takes months to rebalance fully
By Selling (Tax Event)
- →Selling triggers STCG or LTCG tax
- →Instant rebalancing — portfolio back on target immediately
- →Necessary for large drifts (10%+)
- →Use LTCG exemption (₹1.25L) to minimize tax
Two-Level Rebalancing
Smart rebalancing happens at two levels: between asset classes (equity vs debt vs gold) and within each asset class (large cap vs mid cap vs small cap within equity).
Two-Level Rebalancing
When NOT to Rebalance
Market Crash Consideration: During a severe market crash (like March 2020), your equity allocation drops dramatically. Mechanically rebalancing would mean selling debt/gold to buy more equity at the bottom — which is actually the RIGHT thing to do. But many investors panic and do the opposite. If you cannot stomach buying equity during a crash, do NOT rebalance during extreme market events. Wait for things to stabilize and resume annual rebalancing. Sticking to your plan imperfectly is better than abandoning it entirely.
Small Drifts (<3%)
Not worth the effort or tax cost. Let small drifts ride. Only act when drift exceeds 5% from target.
High Tax Cost
If rebalancing would trigger large STCG (20%), wait until holdings become LTCG-eligible (12 months) or use new money instead.
Very Short Holding
Do not sell equity held for 10-11 months. Wait one more month to cross 12 months and get LTCG rate instead of STCG.
How to Set Rebalancing Alerts
Annual Calendar Reminder
Set a Google Calendar reminder for January 1 (or your birthday) every year. Open your portfolio, check allocations, rebalance if needed. Takes 30 minutes once a year.
Portfolio Tracker Alert
Use apps like Kuvera, INDMoney, or ValueResearch to track your portfolio. Some send email alerts when allocation drifts beyond your threshold.
Spreadsheet Method
Maintain a simple Google Sheet with your target allocation and current values. Update quarterly. Calculate drift percentage. Rebalance when any asset exceeds 5% drift.
Step-by-Step Rebalancing Process
Calculate Current Allocation
Add up the current market value of every investment. Group by asset class (equity, debt, gold). Calculate each as a percentage of total.
Compare With Target
Note the difference between current and target for each asset class. If equity target is 60% but current is 72%, equity is overweight by 12%.
Decide: New Money or Sell?
If drift is small (under 5%), redirect future SIPs to underweight asset. If drift is large (over 10%), you need to sell overweight assets.
Calculate Trade Amounts
Multiply total portfolio value by the percentage you need to shift. ₹10L portfolio, 12% equity overweight = sell ₹1.2L of equity and buy ₹1.2L of debt/gold.
Execute Trades Tax-Efficiently
Sell LTCG-eligible holdings first. Use ₹1.25L annual exemption. Spread across financial years if possible. Buy underweight assets the same week.
Document and Set Next Reminder
Record the rebalancing in your spreadsheet. Note the new allocation. Set the next reminder for 6 or 12 months. Done.
Example: ₹10 Lakh Portfolio Rebalancing
| Asset Class | Target | Current | Drift | Action |
|---|---|---|---|---|
| Equity | ₹6,00,000 (60%) | ₹7,80,000 (72%) | +12% | SELL ₹1,30,000 |
| Debt | ₹3,00,000 (30%) | ₹2,10,000 (19%) | -11% | BUY ₹1,19,000 |
| Gold | ₹1,00,000 (10% | ₹95,000 (9%) | -1% | BUY ₹11,000 |
| Total | ₹10,00,000 | ₹10,85,000 | — | Net zero trades |
Rebalancing Reduces Risk
The primary benefit of rebalancing is not higher returns — it is controlled risk. A portfolio that is never rebalanced can drift to 85% equity in a bull market, then crash 35% in a downturn. A rebalanced portfolio limits the crash to 20-25%.
Maximum Drawdown: Rebalanced vs Unrebalanced
Rebalancing limits drawdowns by preventing equity from becoming too large a portion of your portfolio
Key Takeaways
Annual Is Enough
For most investors, rebalancing once a year is optimal. More frequent rebalancing adds tax cost without meaningful risk reduction.
New Money First
Rebalance by redirecting SIPs to underweight assets. Only sell when drift exceeds 10%. This saves tax.
Risk Control, Not Returns
Rebalancing controls risk by preventing your portfolio from drifting into an allocation you did not sign up for.
Two Levels
Rebalance between asset classes (equity vs debt) AND within equity (large vs mid vs small). Both matter.
The Discipline Dividend
Rebalancing forces you to "sell high and buy low" systematically — the exact opposite of what most investors do emotionally. In 2020, rebalanced portfolios bought equity at Nifty 8,000 while unrebalanced investors panicked and sold. This discipline dividend compounds over decades and is the real reason rebalancing works.
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