Setting a financial goal

“I want to be comfortable” is a feeling, not a goal. You cannot invest towards it because you cannot tell whether you are on track. A goal you can actually plan for is three numbers: an amount, a date, and the monthly figure that connects them. This article is about getting to those three honestly.

First, an amount — in today’s money

Start by pricing the thing, at today’s prices, as specifically as you can. Not “a good retirement” but “an income of so much a month”. Not “my child’s education” but “a course that costs about this much today”. A vague target cannot be planned; a specific one can, even if the number is a rough guess. A guess you can write down beats a feeling you cannot.

Whether the answer feels large or small at this stage does not matter. What matters is that it is a number attached to a real thing, priced as it stands today. The next step is to age it forward.

Today’s price is not the price you will pay

The single most common planning mistake is to aim at today’s price for a thing you will buy years from now. Prices rise. The amount you actually need is the present cost inflated to the date you need it.

The arithmetic is ordinary compounding. A cost of C today, rising at r percent a year for n years, becomes C × (1 + r)ⁿ. Suppose a wedding would cost ₹15,00,000 today and it is ten years away. At an assumed 6% a year, that is 15,00,000 × 1.06¹⁰ — roughly ₹26,86,000. Almost double, and nothing has gone wrong; that is just what a decade of price rises does.

Two honesties here. The inflation rate you use is an assumption, not a fact, and different costs inflate at different speeds — education and healthcare have tended to run faster than a general basket, so a single household number can understate them. Use a rate you can defend, and if anything err on the higher side, because aiming at the un-inflated figure is the one error that guarantees a shortfall.

The date chooses the mix, not the other way round

Once you have a future amount and a date, the gap between now and the date — the horizon — decides what you should hold. This is the right way round, and people routinely get it backwards by picking an investment they like and then hoping the timeline fits.

• A long horizon can absorb the wide swings of equity, because there is time for a bad stretch to recover before the money is spent.
• A short horizon cannot. Money needed within about three years has no time to recover a fall, so its range has to be narrow — which is what steadier, debt-oriented holdings are for.
• A medium horizon is where a blend of the two earns its keep.

The equity, debt and hybrid article walks through what each of those actually holds. The point for planning is only this: the horizon is an input you already have, so let it choose the mix.

From a target to a monthly figure

Now the third number. Given a future amount, a date, and an assumed rate of return on your chosen mix, there is exactly one monthly contribution that gets you there. You do not need to work it out by hand — that is precisely what a calculator is for.

The goal planner takes the target and the date and returns the monthly figure; the SIP calculator works the other way, showing what a given monthly amount could grow to. Between them you can turn the plan round and round until the numbers sit together.

One warning about the rate of return you type in. It is an assumption about an uncertain future, not a promise the market has made you. Nothing here can be guaranteed, and a plan built on a hopeful rate is a plan that quietly needs the market to cooperate. Use a sober figure, and treat the monthly number it produces as the honest one.

When the number comes out too big

Often it does. You do the arithmetic, and the required monthly figure is more than you can spare. This is useful information, not a failure — it is the plan telling you the truth early, while you can still do something about it.

There are exactly three honest levers, and one tempting dishonest one.

• Extend the date. More years means more time for contributions and compounding to work, which lowers the monthly figure. Often the cleanest fix, when the deadline is genuinely movable.
• Cut the target. A smaller amount needs a smaller contribution. A less expensive version of the goal that you actually fund beats an expensive one you fall short of.
• Accept the gap. Invest what you can, knowingly, and plan to close the rest another way — a future raise, a step-up in the amount each year, or a smaller shortfall met from elsewhere. A partial plan you fund is real; a perfect plan you cannot afford is not.

The dishonest lever is to raise the assumed rate of return until the monthly figure shrinks to something comfortable. It changes the spreadsheet and nothing in the world. The market does not pay a higher return because your goal needs it, and typing a bigger number simply moves the shortfall from today, where you could act on it, to the date itself, where you cannot. Adjust the date, the target, or your acceptance of the gap. Never adjust the return to make the maths feel better.