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SIP Calculator
Estimate what a monthly SIP could grow to — the future value of a regular investment, with rupee-cost averaging built in. ₹, live.
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Quick Answer
Enter a monthly amount, an expected annual return and a number of years, and it estimates the future value, total invested and likely gains of a Systematic Investment Plan. ₹5,000 a month at 12% for 10 years projects to about ₹11.6 lakh on ₹6 lakh invested. It uses the annuity-due formula — contributions at the start of each month — and runs live in your browser.
What the SIP Calculator Does
Put in a monthly investment, an expected annual return and a number of years, and the tool projects the future value, how much you'll have invested, and the estimated gains on top. It works in rupees and updates as you type.
A SIP is investing a fixed sum every month into a mutual fund. Its appeal is discipline and rupee-cost averaging — a fixed amount buys more units when prices dip and fewer when they rise — and this projects the compounded outcome at a steady assumed return.
How It Works
It converts your inputs to a monthly rate (the annual return divided by 12) and a number of months (years times 12), then applies the future-value-of-an-annuity-due formula, which compounds each monthly contribution to the end of the term.
Total invested is simply the monthly amount times the number of months, and the estimated returns are the projected future value minus what you put in.
Methodology
- Step 1. Take the monthly amount M, the expected annual return, and the number of years.
- Step 2. Convert to a monthly rate i (annual ÷ 12 ÷ 100) and months n (years × 12).
- Step 3. Apply FV = M × ((1 + i) to the power n − 1) ÷ i × (1 + i).
- Step 4. Compute invested = M × n, and estimated returns = FV − invested.
- Step 5. Recompute live whenever an input changes.
SIP future value (annuity due)
FV = M × ((1 + i)^n − 1) ÷ i × (1 + i)
M = monthly amount, i = monthly rate (annual ÷ 12), n = months
Invested = M × n, Returns = FV − InvestedWorked examples
₹5,000/month at 12% p.a. for 10 years (i = 0.01, n = 120): FV ≈ ₹11,61,695 on ₹6,00,000 investedThe extra ≈ ₹5,61,695 is the projected growth at a steady 12%The trailing × (1 + i) makes it an annuity due: it assumes each month's money goes in at the start of the period, the usual way SIPs are modelled. Real returns vary year to year; this assumes a constant rate.
Assumptions
- A constant annual return every single year — real markets never behave this way, so treat it as a projection, not a promise.
- Contributions at the start of each month (annuity due), the same amount, never missed.
- Returns are reinvested and compound; there are no withdrawals.
- The figure is gross: it ignores the fund's expense ratio, exit loads, and capital-gains tax.
Technical Details
| Inputs | Monthly amount, expected return % p.a., years |
|---|---|
| Outputs | Future value, invested, estimated returns |
| Model | Annuity due (start of month) |
| Currency | Rupees (₹) |
| Formula | FV = M × ((1+i)ⁿ−1)/i × (1+i) |
| Where it runs | In your browser, live |
Standards & references
- Annuity-due future value — FV = M × ((1+i)ⁿ−1)/i × (1+i) — the future value of a regular contribution made at the start of each period.
- Systematic Investment Plan (SIP) — a fixed amount invested in a mutual fund at regular intervals, popular in India for disciplined, long-term investing.
- Rupee-cost averaging — investing a fixed sum each month buys more units when prices fall and fewer when they rise, smoothing the average cost.
Accuracy & Limitations
It's an estimate at one constant return. Real mutual-fund returns swing from year to year, so the actual outcome will differ — sometimes sharply, especially over shorter periods.
The figure is gross: it doesn't subtract the fund's expense ratio, any exit load, or capital-gains tax, all of which reduce what you actually keep.
Inflation isn't applied — ₹11.6 lakh in ten years won't buy what ₹11.6 lakh buys today.
It assumes you never miss or change a contribution; a step-up SIP, a pause, or a market dip at the wrong time all change the real result.
Real-World Use Cases
Plan toward a goal
Find the monthly amount that could reach a target over your horizon.
Compare scenarios
See how the outcome shifts with different returns or durations.
Invested vs returns
Split a plan into what you contribute and what growth might add.
Learn disciplined investing
See how steady monthly investing compounds over years.
When to use it — and when not to
Good for
- Projecting a monthly mutual-fund SIP
- Goal-based planning
- Comparing return and duration scenarios
- Understanding compounding on contributions
Not the best choice for
- A one-time lump sum
- A bank recurring deposit
- Guaranteed or after-tax figures
Investing a lump sum once? Use the compound interest calculator. A bank recurring deposit? Use the RD calculator. And remember this is a gross projection — subtract fund costs and tax for a realistic figure.
Frequently Asked Questions
What is a SIP?
A Systematic Investment Plan — investing a fixed amount into a mutual fund at regular intervals, usually monthly. It's a popular way to invest steadily over the long term.
What formula does it use?
The future value of an annuity due: FV = M × ((1+i) to the power n − 1) ÷ i × (1 + i), with M the monthly amount, i the monthly rate and n the number of months.
Why the extra × (1 + i)?
That makes it an annuity due, assuming each contribution is made at the start of the month. SIPs are normally modelled this way, which gives a slightly higher figure than end-of-month timing.
What does ₹5,000 a month at 12% for 10 years project to?
About ₹11,61,695, on ₹6,00,000 invested — so roughly ₹5,61,695 of projected growth, assuming a steady 12% a year.
Is the return guaranteed?
No. Mutual funds aren't guaranteed, and the constant return here is an assumption. The real outcome depends on the market and will vary.
Does it account for taxes and fund charges?
No. It's a gross figure. A fund's expense ratio, any exit load, and capital-gains tax all reduce the real return, so subtract those for a truer picture.
Is inflation included?
No. The future value is in nominal rupees, so its real spending power will be lower than the number suggests.
What return should I assume?
Be conservative. Indian equity funds have historically returned roughly 10–12% over long periods, but past performance doesn't guarantee the future — try a lower figure to stress-test your plan.
How is a SIP different from a lump sum?
A SIP invests gradually each month; a lump sum goes in once. For a one-time investment, use the compound interest calculator instead.
How is it different from a recurring deposit?
An RD is a fixed-return bank product; a SIP is a market-linked mutual-fund investment. Use the RD calculator for a bank recurring deposit.
What is rupee-cost averaging?
Because you invest the same amount each month, you automatically buy more units when prices are low and fewer when they're high, which smooths your average purchase cost over time.
What currency does it use?
Rupees, in keeping with how SIPs are described in India, though the formula works the same for any currency.
References
Projects a monthly SIP with the annuity-due formula (contributions at the start of each month) at a constant assumed return — a gross estimate, before fund costs, taxes and inflation, which real markets won't match year to year.
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