Asset Allocation & Rebalancing
So far you've learned about individual investments — equity, debt, gold, an FD, an ELSS fund. This chapter is about the question that sits one level above all of them: how much of your money should go into each kind of asset? That single decision — your asset allocation — shapes your financial life more than any clever fund pick ever will. Let's build it from scratch.
8.1 What "asset allocation" actually means
- Asset class
- A family of investments that behaves similarly. The big four for an Indian investor: equity (stocks / equity mutual funds — high growth, high swings), debt (FDs, PPF, EPF, bonds, debt funds — steady, low swings), gold (a hedge that often rises when stocks fall), and cash (savings account, liquid funds — safe, low return).
- Asset allocation
- The percentage split of your portfolio across these classes — for example, 60% equity / 30% debt / 10% gold.
Why the mix matters more than the picks
In 1986, three researchers — Brinson, Hood and Beebower — studied 91 large US pension funds and found that asset allocation explained about 93.6% of how much a portfolio's returns bounced around over time (a 1991 follow-up found 91.5%). This is where the famous "allocation is ~90% of everything" line comes from.
8.2 Strategic vs Tactical allocation
| Strategic (SAA) | Tactical (TAA) | |
|---|---|---|
| What it is | Your long-term target mix, set by goals, risk appetite and time horizon | Deliberate short-term deviations to chase a perceived opportunity |
| Example | "Hold 60/30/10 through all cycles" | "Stocks look cheap — push equity to 70% for now" |
| Cost & skill | Low; set-and-maintain | High; needs timing skill most people lack |
| Verdict | The backbone of every sensible plan | Easily slides into market-timing; evidence it helps retail investors is weak |
8.3 How to choose your target mix
The "100 minus age" rule and its better cousins
A starting heuristic: equity % = 100 − your age. At 30 that's 70% equity; at 60 it's 40%. The idea is to take more risk while you have years to recover, then dial down.
But that rule was built when people died younger and bonds paid more. A healthy 35-year-old founder today may live another 50+ years, so being too conservative creates a different danger — longevity and inflation risk, the chance of outliving your money. Modern versions stretch it to "110 − age" or even "120 − age".
8.4 Rebalancing: keeping the mix on target
Markets move, so your carefully set 60/30/10 drifts. After a strong equity rally it might become 70/22/8 — meaning you now carry more risk than you signed up for. Rebalancing is the act of selling what grew and buying what lagged to return to your target.
TARGET 60 / 40 AFTER A RALLY REBALANCE
Equity ████████ 60% Equity ██████████ 70% sell 10% equity (SELL HIGH)
Debt █████ 40% Debt █████ 30% buy 10% debt (BUY LOW)
→ back to 60 / 40
Two ways to trigger it
- Calendar rebalancing — on a fixed schedule (yearly, half-yearly), no matter the drift. Simple and disciplined.
- Threshold (tolerance band) rebalancing — act only when a class drifts past a band, commonly ±5 percentage points (so a 60/40 acts when equity tops 65% or drops below 55%).
Vanguard's research (2022 and 2024) found threshold-based beats frequent calendar rebalancing by roughly 15–22 basis points a year while you're saving, and ~22–25 bps a year in retirement versus rebalancing monthly — almost entirely by cutting transaction costs. (A basis point = 0.01%.) Kitces sums it up: "trigger-based beats calendar-based."
8.5 Tax-aware rebalancing in India (FY 2025-26)
Selling to rebalance can trigger tax, so do it smartly. These rates apply to transfers on or after 23 July 2024:
| Asset | Short-term gain | Long-term gain |
|---|---|---|
| Equity / equity MFs | 20% if held ≤12 months (Sec 111A) | 12.5% if held >12 months (Sec 112A), after a ₹1.25 lakh/yr exemption |
| Debt MFs bought on/after 1 Apr 2023 | Taxed at your slab rate regardless of holding period — no LTCG benefit, no indexation (like an FD) | |
Tactics that keep more money yours:
- Harvest the ₹1.25 lakh exemption every year. Book up to ₹1.25 lakh of equity long-term gains tax-free, then immediately rebuy — this resets your cost basis higher so future tax is lower ("tax-gain harvesting").
- Rebalance with new money first. Instead of selling the overweight asset, redirect your fresh SIPs into the underweight one. No sale = no capital-gains event.
- Cross the 12-month line. Wait past one year on equity so you pay 12.5% LTCG instead of 20% STCG.
- Watch the exit load. Many equity funds charge ~1% if you redeem within 365 days — check before you trim.
- Turn debt over the least. Since debt-fund gains now hit your slab rate, rebalance debt sparingly; some use arbitrage funds (taxed as equity) for the debt-like sleeve.
8.6 The glide path near a goal
The closest danger to a goal is a crash just before you need the money — called sequence-of-returns risk (a bad market right at withdrawal time can permanently dent the corpus you spent years building). The fix is a glide path: as a goal nears, steadily shift that money from equity into short-duration debt and liquid funds.
Indian readers already meet a glide path inside the NPS "Auto Choice" options (LC75 / LC50 / LC25), which automatically reduce equity as you age — a built-in, hands-off version of this idea.
Key Takeaways
- Your asset mix drives how your returns behave far more than which stock or fund you pick — design the recipe before shopping for ingredients.
- Set a Strategic allocation from your age, goals and risk appetite (a "110 − age" equity rule is a fair start) and count EPF/PPF as debt so you don't end up accidentally over-conservative.
- Rebalancing forces buy-low / sell-high and keeps your risk at its intended level; it's a risk tool first, a small return bonus second.
- Use the hybrid trigger: check yearly, act only if a class drifts past ±5 points — and never over-rebalance.
- Rebalance tax-smart: harvest the ₹1.25 lakh equity LTCG exemption, redirect fresh SIPs, cross the 12-month line, and mind exit loads; debt funds now tax at slab rate, so turn them over least.
- Glide a goal's money out of equity 3–5 years before you need it to dodge a last-minute crash — but keep some equity to stay ahead of inflation.