SIP Calculator

SIP calculator for mutual fund investments

A SIP (systematic investment plan) invests a fixed amount in a mutual fund every month. This SIP calculator estimates how much those monthly instalments could be worth after a chosen number of years at an assumed rate of return, and splits the result into the amount you invested and the estimated returns.

You can also add an annual step-up — the percentage by which you raise your SIP each year as your income grows. A growth chart and a year-by-year table show how compounding takes over in later years, and the table can be downloaded as CSV.

Add a lumpsum today to see a SIP and lumpsum together, an inflation rate for the value in today’s money, or a delay in months to see what starting late costs and the bigger SIP needed to catch up. Rupee amounts use lakh and crore grouping. Real mutual fund returns move with the market, so the figures are estimates, not a promise or financial advice.

How to use the SIP Calculator

1. Enter your Monthly investment or drag the slider — for example ₹10,000.
2. Set an Expected return (p.a.). Use a conservative long-term figure rather than last year’s return.
3. Choose the Time period in years.
4. Optionally add an Annual step-up to raise your SIP by a fixed percentage every year.
5. Read the maturity value, invested amount and estimated returns, and see how the bars grow year by year.
6. Check the yearly table and press Download CSV to keep your plan.

SIP Calculator features

SIP formula with a worked example

For a fixed SIP the maturity value is M = P × [((1 + i)n − 1) ÷ i] × (1 + i), where P is the monthly instalment, i is the expected annual return ÷ 12 ÷ 100 and n is the number of monthly instalments. The final (1 + i) reflects that each instalment is invested at the start of the month and earns a full month of growth.

Example: ₹10,000 a month for 10 years at 12% a year. Here i = 0.01 and n = 120, so M = 10,000 × [(1.01¹²⁰ − 1) ÷ 0.01] × 1.01 ≈ ₹23,23,391. You invest ₹12,00,000 and the estimated returns are ₹11,23,391. With a 10% yearly step-up you would invest ₹19,12,491 and the value rises to about ₹33,74,326. (If instalments were assumed at the end of each month, the plain-SIP figure would be ₹23,00,387 — which is why calculators can differ slightly.)

How time changes a ₹5,000 monthly SIP

At an assumed 12% a year, the estimated returns overtake the money you put in after about 11 years and then dominate:

SIP and lumpsum together, and the cost of waiting

A starting lumpsum of L grows as L × (1 + i)n and is added to the SIP value. With ₹1,00,000 on top of the ₹10,000 SIP above, the 10-year value rises from ₹23,23,391 to about ₹26,53,429.

The delay box keeps the end date fixed and starts the SIP later. Starting 12 months late means 108 instalments instead of 120: the value falls to about ₹19,48,215, a loss of ₹3,75,176, and a SIP of about ₹11,926 would be needed to catch up. Because values scale with the instalment, this is solved exactly. “SIP money as one lumpsum” shows what the same total would be worth if invested on day one.

XIRR, market risk and realistic expectations

Real SIP returns are not a fixed rate. Each instalment buys units at a different NAV, so fund houses and apps report SIP performance as XIRR — an annualised return that accounts for the date and size of every cash flow. Use this calculator to plan with an assumed rate, then compare your actual XIRR in your statement.

• Equity funds can fall sharply in some years; long holding periods smooth this but do not remove it.
• Expense ratios, exit loads and capital-gains tax reduce what you take home.
• Inflation erodes value — check the real worth of your target with the inflation calculator.
• Investing a one-time amount instead? Use the lumpsum calculator, and measure past growth with the CAGR calculator.