About the Goal SIP Calculator
Most SIP calculators start with the amount you can invest and tell you what it may become. A goal SIP calculator works the other way round. You enter the amount you need, when you need it and the return you expect, and it tells you the monthly SIP required to reach that target, along with how much of the goal comes from your own money.
It suits anyone planning for a specific target: a child's education, a home down payment, a wedding, retirement, or capital to start or expand a business. Seeing the required monthly figure early helps you decide whether the goal is realistic, whether it needs more time, or whether you should begin with a smaller SIP and increase it every year.
The required SIP falls sharply when you start earlier, because compounding has more time to work, and it rises if you assume a lower return. Remember that the target should be in future rupees. If a course costs a certain amount today, it will cost more in ten years, so inflate the cost first and then plan the SIP for that figure.
How to use it
- 1Enter the target amount you want to accumulate, in future rupees.
- 2Enter the number of years you have to reach the goal.
- 3Enter the annual return you expect from the investment.
- 4Read the monthly SIP needed, the total you will invest and the share expected from returns.
- 5Compare it with the one-time investment that would reach the same goal.
How this is calculated
P = FV ÷ {[((1 + i)^n − 1) ÷ i] × (1 + i)} FV = target amount, i = expected annual return ÷ 12 ÷ 100, n = number of months. This is the SIP maturity formula rearranged to give the monthly instalment, with each instalment invested at the start of the month. One-time investment needed = FV ÷ (1 + r)^years, compounded annually.
Frequently asked questions
How do I calculate the SIP needed for a goal?
The calculator rearranges the SIP maturity formula to solve for the monthly instalment. It divides your target by the growth factor for the chosen return and period, assuming each instalment is invested at the start of the month and compounds monthly. The result is the fixed SIP that reaches the target if the assumed return is achieved.
Should I adjust my goal for inflation?
Yes. A goal that is ten or fifteen years away will cost much more than it does today. Use the inflation calculator to convert today's cost into a future cost, then enter that future amount here. Planning on today's price is one of the most common reasons long-term goals fall short.
What if the required SIP is more than I can afford?
You have three levers: give the goal more time, start with a smaller SIP and raise it every year as income grows, or reduce the target. Assuming a higher return makes the number look better on paper but does not make the goal safer, so avoid closing the gap that way.
What return should I assume for goal planning?
For long-term goals funded through equity funds, it is prudent to use a moderate assumption rather than the best years of the market. For goals within three to five years, where money is usually kept in debt funds or deposits, use a lower rate. It is safer to be pleasantly surprised than to fall short.
Is a lump sum or a monthly SIP better for a goal?
If you already have the money, a lump sum needs a smaller total outlay because the whole amount compounds from the first day; the calculator shows that figure for comparison. Most people do not have it upfront, so a SIP from monthly income is the practical route. A combination of both also works well.