SIP Calculator
By Varun M
Enter your monthly SIP amount, expected annual return, and duration to see your estimated maturity value — and how much of it is your own money vs. estimated gains.
Enter a valid monthly amount, return rate, and duration (more than 0 years) to see your estimate.
Estimated maturity value
Total invested
Estimated gains
How to use this calculator
Enter how much you plan to invest each month, an assumed annual rate of return, and how many years you'll keep investing. The result shows your estimated maturity value, split into what you actually put in vs. what you'd earn on top — a useful illustration of how compounding does more of the work the longer you stay invested.
The formula, explained
FV = P × [((1+i)^n − 1) / i] × (1+i)
Where P is your monthly investment, i is the monthly rate of
return (annual return ÷ 12 ÷ 100), and n is the number of months. The final
× (1+i) reflects that each SIP instalment is invested at the
start of the month, not the end — the standard convention used by
SEBI/AMFI-aligned SIP calculators.
Worked example
₹5,000/month, 12% expected annual return, over 10 years:
- Total invested: ₹6,00,000
- Estimated maturity value: ₹11,61,695
- Estimated gains: ₹5,61,695 — nearly as much as the amount invested
Extend the same SIP to 20 years instead of 10, and the gains component grows far faster than the invested amount — that's compounding: returns earn returns of their own the longer money stays invested.
What this doesn't model
- The return rate isn't guaranteed. Markets fluctuate; this shows one illustrative constant-return scenario, not a forecast.
- Expense ratio (the fund's annual fee) and exit load, both of which would lower real returns.
- Taxes on gains, which depend on fund type (equity/debt) and holding period.
- SIP step-ups (increasing your monthly amount each year), which many investors do as income grows — this assumes a flat monthly amount throughout.
SIP vs. PPF
A SIP into an equity or debt mutual fund carries market risk and no guaranteed return, but has historically outpaced fixed-income options over long horizons. PPF (see the PPF Calculator) offers a government-guaranteed, tax-free return with none of the market risk, but a 15-year lock-in and a lower ceiling on how much you can put in each year. Many people use both: PPF for a guaranteed core, SIPs for growth on top.
FAQ
Using the future value of an annuity due: FV = P × [((1+i)ⁿ − 1) / i] × (1+i), where P is your monthly investment, i is the monthly rate of return, and n is the number of months. The extra (1+i) factor accounts for each instalment being invested at the start of the month, not the end.
No — this calculator asks you to enter an assumed constant annual return purely for illustration. Mutual fund returns are market-linked, fluctuate year to year, and are never guaranteed. Treat the result as one illustrative scenario, not a prediction.
No. Mutual funds charge an expense ratio (an annual fee, deducted from returns) and sometimes an exit load (a charge for withdrawing early). Neither is modelled here — your real returns will be somewhat lower than shown once these are factored in.
A SIP spreads your investment across regular monthly instalments, which averages your purchase price over market ups and downs (rupee-cost averaging) — useful when you don't have a large sum to invest at once, or want to reduce timing risk. A lump-sum investment puts the full amount in on day one, which can outperform or underperform a SIP depending purely on market timing.
Yes, depending on the fund type and holding period — equity and debt mutual funds have different capital gains tax treatment, and each SIP instalment is treated as a separate investment for holding-period purposes. This calculator shows pre-tax figures only; consult a tax professional for the exact post-tax outcome.
Formula last verified: 14 Aug 2026
Sources: Standard annuity-due future-value formula (investment at the start of each month), the convention used across SEBI/AMFI-aligned SIP calculators; SEBI Investor Education (investor.sebi.gov.in) confirms an official SIP calculator exists but does not itself publish its exact formula.
This is an illustrative estimate only, based on a constant assumed annual return — actual mutual fund returns fluctuate and are never guaranteed. It does not account for expense ratios, exit loads, taxes on gains, or inflation. This is not investment advice; consult a qualified financial advisor before investing.