SIP Calculator
Work out what your monthly SIP could grow to. Adjust the amount, expected return and time period to see your estimated maturity value.
About ₹12,97,000 in today’s money at 6% inflation.
| Year | Invested in year | Total invested | Value at year end |
|---|
How to use this SIP calculator
Three inputs, and you can drag the sliders or type the numbers directly.
- Monthly investment — what you'll put in every month. Start with what you can actually sustain, not an aspirational figure.
- Expected return — 12% is the usual assumption for equity funds. Use 10% if you want a conservative view, 8% for hybrid funds, 6-7% for debt.
- Investment period — how many years you'll keep investing.
The three tabs do different jobs. Monthly SIP assumes the same amount every month. Step-up SIP raises it by a set percentage each year, which is what most people do as their salary grows. Lumpsum is for a one-time investment.
Below the results you'll find a year-by-year breakdown showing how the balance builds. Open it — it's the clearest way to see that most of the growth happens in the final third of the period.
The formula behind the numbers
A SIP is a series of monthly investments, each compounding for a different length of time. The standard future value formula is:
M = P × ({[1 + i]^n – 1} / i) × (1 + i)
- M — the maturity amount
- P — your monthly investment
- i — the monthly rate of return (annual rate ÷ 12 ÷ 100)
- n — total number of monthly instalments
At 12% a year, i works out to 0.01. For a ten-year SIP, n is 120. The final (1 + i) accounts for each instalment being invested at the start of the month rather than the end.
For step-up SIPs there's no neat closed formula, so this calculator runs the projection month by month, raising the contribution on each anniversary. That's also what produces the year-by-year table.
A worked example
₹10,000 a month, 12% expected return, 10 years:
| Total invested | ₹12,00,000 |
| Estimated returns | ₹11,23,391 |
| Maturity value | ₹23,23,391 |
Just under half of that final figure is money you never put in. Stretch the same SIP to 20 years and it becomes roughly ₹99.9 lakh, of which only ₹24 lakh is your own contribution. The extra ten years more than quadruples the outcome.
Why a step-up SIP changes the picture
Most people's income rises every year, but their SIP doesn't. Switch to the Step-up tab and add a 10% annual increase to see the difference:
| ₹10,000/month, 12%, 20 years | Maturity value |
|---|---|
| Regular SIP | ₹99.9 lakh |
| With 10% yearly step-up | ₹1.99 crore |
An increase most people wouldn't notice month to month nearly doubles the outcome. If you set one thing up after reading this, make it a step-up.
What this calculator can't tell you
It assumes a steady return every single month. Real markets don't work that way — a fund that averages 12% over fifteen years will have had years at +34% and years at -22%. Your actual maturity value depends heavily on where the market sits in the final few years.
It also ignores expense ratios and exit loads. A regular plan charging 2% a year will land meaningfully below these figures. And the returns shown are pre-tax.
Treat the output as a planning range, not a prediction. Run it at 10% and 14% as well, and plan around the lower number.
Frequently asked questions
Is this SIP calculator accurate?
The maths is exact — it uses monthly compounding with contributions at the start of each month, the same convention the major fund houses use. What can't be accurate is the return assumption, because nobody knows what markets will do.
What return rate should I enter?
For equity funds, 10-12%. Large-cap funds sit at the lower end, mid and small-cap higher but with far more volatility. Hybrid funds around 8-9%, debt funds 6-7%. Avoid entering the last three years' returns of a fund that just had a strong run.
Does the calculator account for inflation?
Yes, partly. Below the results there's a line showing what your maturity amount would be worth in today's money at 6% inflation. ₹1 crore in twenty years buys roughly what ₹31 lakh buys now, which is worth keeping in view when you set a goal.
Can I use it for ELSS or tax-saving funds?
Yes. ELSS funds are equity funds, so the same maths applies. Just remember each instalment is locked in for three years.
What's the difference between SIP and lumpsum returns?
A lumpsum has the full amount compounding from day one, so given the same total money and the same period it usually ends higher. A SIP spreads your entry across market levels, which lowers the risk of investing everything at a peak. Use the Lumpsum tab to compare the two.
Mutual fund investments are subject to market risk. The figures shown are illustrative estimates based on the return rate you enter, not guaranteed outcomes. This is general information, not investment advice.