Future value of a one-time investment.
Future value
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Invested
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Total gain
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What compounding does to money left alone
A lump sum is a single amount you invest once and leave to grow. The reason it can grow so much is compounding: each year's return is earned not just on your original money but on every rupee of return already added. Early on the gains look modest. Late on they look dramatic, because the base they build on has swollen. This calculator projects that curve forward, showing what a one-time investment becomes over your chosen horizon and how much of the final figure is your original capital versus pure growth.
This is an investment projection, not a tax computation, so the Federal Board of Revenue's rates do not enter the maths here. Collective investment schemes such as mutual funds in Pakistan are regulated by the Securities and Exchange Commission of Pakistan (SECP), and any return you assume should reflect a real, SECP-regulated product's track record rather than a hopeful round number. The 15 percent default in this tool is an assumption, not a promise, and markets do not deliver a smooth fixed rate.
Watching PKR 500,000 grow over a decade
Invest PKR 500,000 once and assume a 15 percent annual return over ten years, using the rate this calculator applies. Compounding multiplies the original sum by about 4.05, so the investment grows to roughly PKR 2,022,779. Your contribution was only PKR 500,000, which means the gain alone is about PKR 1,522,779, more than three times what you put in. The striking part is how lopsided the growth is across the years.
| Year | Value at 15% | Gain so far |
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The bars below mark the value at intervals. Notice the jump from year to year grows wider as time passes, even though the return rate never changes. That widening is compounding made visible, and it is why time in the market matters as much as the rate.
Reading the result honestly
Two caveats keep this projection grounded. First, the figure is nominal and before tax. Gains on many Pakistani investments are taxable, and the rate depends on the instrument and your filer status, so the cash in your hand at the end may be less than the headline. Confirm how your chosen product is taxed with the FBR or a tax adviser. Second, that PKR 2.02 million is in future rupees, which will buy less than rupees do today once inflation is accounted for. Running the same horizon through the inflation calculator on this site shows the real, spending-power value, which is the number that actually matters for a goal.
This tool fits anyone deploying a windfall, a bonus, a maturing deposit, or accumulated savings, who wants to see the long-run shape of leaving it invested. The most common error is assuming the smooth curve is what real life delivers. Markets rise and fall; a 15 percent average can hide a brutal year followed by a strong one. Use a return assumption you can defend from history, and revisit the projection as conditions change.
Is a 15 percent return realistic in Pakistan?
It has been achievable in some periods and some asset classes, but it is not guaranteed and should not be assumed lightly. Equity-linked funds can deliver high returns over long stretches yet swing hard year to year, while fixed-income products are steadier but usually lower. Base your figure on the documented long-run performance of a real, SECP-regulated product, and consider running a lower, more conservative rate alongside it.
Should I invest the whole amount at once or stagger it?
Investing the full sum immediately puts every rupee to work sooner and tends to win when markets trend upward, which is what this calculator models. Staggering the entry over several months averages your buy price and softens the blow if you happen to invest right before a dip. If a large lump sum makes you nervous about timing, splitting it is a reasonable way to manage that risk, at the cost of some expected growth.