Research on portfolio outcomes consistently finds that the split between asset classes explains far more of the variation in returns than security selection does. Put plainly: how much equity you own matters more than which equities you own.
Allocate by goal, not by mood
The most common approach is to have one undifferentiated pot of money and an opinion about the market. The better approach is to divide money by what it is for and when it is needed, and let the horizon determine the asset.
| Horizon | Example goal | Sensible allocation | Why |
|---|---|---|---|
| Under 1 year | Emergency fund, insurance premium | Savings account or liquid fund | Capital certainty is the entire requirement. Return is irrelevant. |
| 1–3 years | Car, wedding, home down payment | Fixed deposits, short-duration debt funds | Equity can fall 40% and take years to recover. A fixed date makes that unacceptable. |
| 3–7 years | Child’s school fees, a business plan | Mostly debt, perhaps 25–40% equity | Some growth is worth having, but the horizon may not cover a full recovery. |
| 7+ years | Retirement, child’s higher education | Predominantly equity | Long enough to sit through any historical Indian bear market and recover. |
The honest test
Formulas like "100 minus your age in equity" are arbitrary and ignore the only variable that actually determines whether you stick with a plan. The real test is behavioural.
The glide path
A goal that was fifteen years away becomes three years away. The allocation should move with it — shifting from equity into debt as the date approaches, so that a crash in the final year cannot undo fifteen years of compounding.
Rebalancing
- 1Pick a date and a band
Once a year on a fixed date, or whenever any asset class drifts more than 10 percentage points from target. Both work; what matters is that it is a rule rather than a judgement.
- 2Sell what grew, buy what did not
Uncomfortable by design — it means trimming what has been working and adding to what has not. That discomfort is precisely why it works.
- 3Use new contributions first
Directing fresh money to the underweight asset rebalances without triggering any tax or transaction cost. Do this before selling anything.
- 4Do not rebalance constantly
Once a year is plenty. More frequent rebalancing adds cost and tax while adding almost nothing to the outcome.
Your daughter’s university fees are due in two years
You have built ₹42 lakh over fourteen years for this goal, entirely in equity index funds, and it has compounded beautifully. The market has been strong for three years. The fees will be roughly ₹40 lakh, payable in two annual instalments starting in twenty-four months. What now?
Pehle yeh tay karo ki jaana kahan hai — 3 saal mein car, ya 20 saal mein retirement. Uske hisaab se gaadi chunni hai. 3 saal ka paisa equity mein aur 20 saal ka FD mein — yeh dono ulti galtiyan hain, aur dono bahut aam hain.
- How much equity you own matters more than which equities you own.
- Allocate by goal and horizon, not by one undifferentiated pot plus an opinion.
- The honest test is what decline you could sit through without selling.
- De-risk roughly three years before a goal — fourteen good years can be undone by the last one.
- Rebalance once a year by rule, using new contributions first.
Mark it done to track your progress through the curriculum.
Common questions
Short, direct answers to what people ask about this topic.
- goal based asset allocation meaning
- Goal-based asset allocation means deciding how much equity, debt and cash to hold separately for each goal, based on what that money is for and when it is needed, rather than keeping one undifferentiated pot plus an opinion about the market. Money required inside a year sits where the amount is certain; money not needed for seven years or more can carry equity risk. The horizon does the deciding rather than the mood.
- the division of a portfolio between equity debt and cash is known as
- Asset allocation. Research on portfolio outcomes consistently finds it explains far more of the variation in returns than security selection does — how much equity you own matters more than which equities you own. In a 40% market decline a fully equity portfolio loses about 40% of its value and a half-equity one loses about 20%, and no amount of stock-picking skill changes that arithmetic.
- how long before a goal should money be shifted from equity to debt
- Roughly three years before the date, and in stages rather than in one move. This shift is called a glide path, and it exists because equity can fall 35–40% and take years to recover, while a goal with a fixed date has no time to wait. The failure it prevents is the one that hurts most: fourteen years of correct compounding undone by a decline in the final year.
- how often should a portfolio be rebalanced
- Once a year on a fixed date, or whenever any asset class drifts more than about 10 percentage points from its target — both work, and what matters is that it is a written rule rather than a judgement made in the moment. Directing fresh contributions to the underweight asset rebalances without triggering tax or transaction cost, so that comes before selling anything. Rebalancing more frequently adds cost and tax while adding almost nothing to the outcome.
- is 100 minus your age a good way to decide equity allocation
- It is a rough thumb rule rather than a considered answer, because it ignores the only variable that decides whether a plan survives — what decline you could actually sit through without selling. The more honest test is to ask what fall in your total savings you could hold through: if the answer is 15%, then a portfolio that can fall 40% is wrong for you whatever your age says, because you will sell at the bottom and turn a temporary decline into a permanent loss. An allocation you can hold through a crash beats a theoretically optimal one you abandon.