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A SIP calculator is a free online tool that helps you estimate the future value of your monthly Systematic Investment Plan (SIP) in mutual funds. You enter your monthly investment amount, expected annual return rate, and investment duration — the calculator instantly shows the maturity value, total invested amount, and estimated returns. At S₹P Calculator Online, our SIP calculator uses the standard compound interest formula FV = P × [((1 + i)^n - 1) / i] × (1 + i) to give you accurate projections in seconds.

A SIP calculator works by applying the compound interest formula to your monthly investment amount. It takes three inputs — monthly investment (P), expected annual return rate (r), and time period in years (n) — converts the annual rate to a monthly rate (i = r/12/100), and computes the future value of every monthly contribution compounded for its remaining tenure. The calculator sums up the future value of all individual monthly investments to arrive at the total maturity value.

The SIP calculator formula is: FV = P × [((1 + i)^n - 1) / i] × (1 + i), where FV is the future value (maturity amount), P is the monthly investment, i is the monthly interest rate (annual rate ÷ 12 ÷ 100), and n is the total number of months. For example, if you invest ₹10,000 monthly at 12% annual return for 10 years (120 months), i = 0.01, and FV ≈ ₹23,23,376.

Using a SIP calculator is simple: (1) Enter your monthly investment amount — for example ₹25,000. (2) Set the expected annual return rate — equity mutual funds typically deliver 10-14% long-term. (3) Choose your investment duration in years — longer durations compound better. (4) The calculator instantly displays the maturity value, total invested amount, and estimated returns. You can also enable annual step-up to model income growth. Try our SIP calculator above with different combinations to find your ideal plan.

A step-up SIP calculator computes the maturity value of a SIP where the monthly investment amount increases every year by a fixed percentage (typically 5-15%). This matches the natural growth of your income through appraisals and promotions. For example, if you start with ₹10,000/month and step up by 10% annually, your SIP in year 5 becomes ₹14,641/month. Step-up SIPs create significantly higher corpus than flat SIPs — often 30-50% more over 15-20 years.

A SIP investment calculator is another name for a SIP calculator — it projects the future value of systematic monthly investments in mutual funds. It helps investors visualise how small regular contributions, combined with compounding, can build substantial long-term wealth. Use our SIP investment calculator above to model different scenarios and plan your mutual fund SIP investments confidently.

The amount you should invest in a SIP depends on your financial goals, monthly income, expenses, and risk appetite. A common rule is the 50-30-20 rule — invest 20% of your income. Use our SIP calculator to reverse-engineer: enter your goal amount (say ₹1 crore) and time horizon (say 15 years), then adjust the monthly investment until you hit the target. For ₹1 crore in 15 years at 12% return, you need to invest roughly ₹20,000 per month.

To build a SIP calculator in Excel: (1) In cell A1 enter monthly investment, B1 annual rate, C1 years. (2) Monthly rate = B1/12/100. (3) Months = C1*12. (4) Use the formula: =A1 * (((1+monthly_rate)^months - 1) / monthly_rate) * (1+monthly_rate). (5) This gives the maturity value. You can also use Excel's FV function: =FV(monthly_rate, months, -monthly_investment, 0, 1). Our online SIP calculator saves you the Excel setup and provides visual charts instantly.