What is the SIP Calculator?
The SIP Calculator estimates the future value of a Systematic Investment Plan where you invest a fixed amount every month. It accounts for the power of compounding through monthly compounding and shows how your wealth grows over time. Mutual fund investors use it to project their investment corpus at retirement or goal dates.
How does it work?
Enter your monthly investment amount, expected annual return rate, and investment period in years. The calculator compounds returns monthly and applies the standard SIP future value formula. It also computes the total amount you invested and the returns generated, giving you a complete picture of your investment growth.
Formula
FV = P x ((1+R)^N - 1) / R x (1+R)
How the calculation works
How the calculation works
- 1Convert the annual expected return to a monthly rate: R = expected return / 12 / 100
- 2Compute the number of months: N = years x 12
- 3Raise the growth factor to the power of N: (1 + R)^N
- 4Future value = P x ((1 + R)^N - 1) / R x (1 + R), where P is the monthly investment
- 5Total invested = P x N, and total returns = future value - total invested
Worked example
Worked Example
Ankit, a 25-year-old marketing professional in Mumbai, starts a monthly SIP of Rs 5,000 in an equity mutual fund expecting 12% annual returns, investing for 10 years.
- 1Step 1: Monthly rate R = 12 / 12 / 100 = 0.01, and months N = 10 x 12 = 120
- 2Step 2: (1.01)^120 = 3.30039
- 3Step 3: Future value = 5000 x ((3.30039 - 1) / 0.01) x 1.01 = 5000 x 230.039 x 1.01
- 4Step 4: Future value = Rs 11,61,695.38
- 5Step 5: Total invested = 5000 x 120 = Rs 6,00,000, so total returns = 11,61,695.38 - 6,00,000 = Rs 5,61,695.38
Result
Ankit's SIP grows to Rs 11,61,695.38 in 10 years. He invests Rs 6,00,000 over 120 months and earns Rs 5,61,695.38 in returns - compounding nearly doubles the money he actually put in.
Interpretation guide
How to read your result
A cautious projection close to long-term debt fund returns or a blended portfolio
Use this level for goals you cannot afford to miss, like children's education in the near term
The commonly used planning range for equity-oriented SIPs based on long-term market history
Use this as your base-case for retirement planning, and revisit the number every few years
An optimistic scenario achievable only by staying fully invested in equities for decades
Treat this as an upside case; never plan essential expenses assuming you will hit it
Common mistakes
- - Assuming historical returns will continue unchanged in the future
- - Not increasing SIP contributions periodically to account for inflation
- - Stopping SIPs during market downturns instead of continuing to accumulate units at lower prices
Practical tips
Practical tips
Start early - the compounding gain comes mostly from time, so a Rs 5,000 SIP at 25 beats a Rs 10,000 SIP started at 35
Use a step-up SIP that raises your contribution by 10% every year to keep pace with salary growth and inflation
Do not stop the SIP when markets fall; continuing through downturns buys more units at lower prices and boosts long-term returns
Choose the right fund type: equity index funds for 10+ year goals, hybrid funds for 5-7 year goals, and debt funds for shorter horizons
Check the fund's expense ratio, exit load, and the SEBI-registered fund house before investing
Set the SIP date just after your salary credit so the investment happens before spending does
When should you use it?
- - Planning for long-term financial goals like retirement or children's education
- - Comparing different monthly investment amounts to find the right commitment
- - Evaluating how increasing the investment period affects the final corpus
- - Deciding between lump sum and SIP investment approaches
Benefits
- - Demonstrates the power of compounding with regular monthly investments
- - Shows the clear relationship between investment amount, time, and returns
- - Helps set realistic financial goals with actionable monthly contribution targets
Step-by-step example
Decide how much you can invest each month. Estimate a realistic annual return rate based on the type of fund equity, debt, or hybrid. Choose your investment horizon in years. The calculator projects your total corpus, the amount you invested, and the returns earned through compounding.
Real-world example
Investing Rs 5,000 per month in an equity mutual fund SIP with an expected 12% annual return for 10 years yields a future value of Rs 11,61,695. You invested Rs 6,00,000 total, and the returns are Rs 5,61,695 more than what you put in.