SIP Сalculator

SIP calculator at a glance#

SIP stands for Systematic Investment Plan, a way of investing a fixed amount every month. A SIP calculator estimates the maturity value with M = P times (((1 + i)^n minus 1) divided by i) times (1 + i), where P is the monthly amount, i is the monthly rate (annual rate divided by 12), and n is the number of months.

Worked example: invest $500 per month at a 12% annual return for 10 years. The monthly rate i is 0.12 divided by 12, which is 0.01, and n is 10 times 12, or 120 months. Putting those into the formula gives a maturity value of about $116,170, from $60,000 of contributions. The gap between the $60,000 you put in and the $116,170 you end with is the compounding on your monthly deposits.

Enter your monthly amount, expected annual return and number of years in the calculator above for the exact maturity value. The figure assumes a steady return and on-time monthly deposits, so actual fund returns, fees and timing will change the result.

How a SIP works#

A SIP invests a fixed amount on a set schedule, usually monthly, into a mutual fund. Because the amount stays fixed while the unit price moves, you buy more units when prices are low and fewer when prices are high. This is rupee or dollar cost averaging, and it spreads your entry price across the whole period instead of one moment.

Returns are reinvested, so each month compounds on the months before it. The longer you stay invested, the larger that compounding effect, which is why SIPs suit long horizons such as retirement or a multi-year goal.

What to enter#

• Monthly investment: the fixed amount you contribute each month.
• Number of years: how long you keep investing. The calculator converts this to months (years × 12).
• Expected annual return: a realistic long-term average, not a single year. The tool converts it to a monthly rate (annual ÷ 12).

Reading the result#

The calculator splits the outcome into two parts. The invested amount is what you put in: the monthly amount times the number of months. The maturity value is the projected total at the end, including growth. The difference between them is the estimated return earned by compounding.

For $500 a month over 20 years at a 12% return, you invest $120,000 and the projection reaches about $499,574. Doubling the horizon from 10 to 20 years more than quadruples the maturity value, even though you only contribute twice as much, because the early deposits compound for far longer.

What the projection assumes#

The formula assumes a steady return every month and deposits made on time. Real fund returns vary year to year, and fees, taxes and a missed contribution all change the outcome. Treat the maturity value as an estimate for planning, not a guarantee. Lowering the expected return in the calculator shows a more conservative range.

SIP calculator FAQ#

What is a SIP calculator?#

It estimates the maturity value of a systematic investment plan from three inputs: the monthly amount, the number of years, and the expected annual return. It uses standard compound-interest math on a monthly series.

How does a SIP calculator work?#

It applies M = P × (((1 + i)^n − 1) ÷ i) × (1 + i), where P is the monthly amount, i is the monthly rate (annual ÷ 12), and n is the number of months. The result is the projected value at the end of the period.

How much does $500 a month become in a SIP?#

At a 12% annual return, $500 a month grows to about $116,170 over 10 years (from $60,000 invested) and about $499,574 over 20 years (from $120,000 invested). Lower returns or shorter periods reduce these figures.

Can I use it for any mutual fund?#

Yes. Enter the expected return for the fund type you have in mind, whether equity, debt or hybrid. Equity funds tend to assume a higher long-term return and more variation than debt funds.

How does market volatility affect a SIP?#

Volatility changes the value month to month, but the calculator uses a steady average return, so it does not model the swings. In practice, cost averaging spreads your purchase price across high and low markets, which smooths the entry cost over time.

Is the maturity value guaranteed?#

No. It is a projection based on a constant return you choose. Actual returns vary, and fees and taxes reduce the final amount, so use it as an estimate rather than a promise.