the guide
SIP calculator: what your monthly investment could grow to
By Shivam Bhandari · Reviewed 31 October 2026 · How we write
A Systematic Investment Plan (SIP) invests a fixed amount every month, usually in a mutual fund. Investing regularly builds discipline and averages out the price you pay over time.
Returns compound — gains earn further gains — so time in the market matters a great deal. This calculator assumes a steady annual return for illustration; real market returns go up and down.
the formula
Future value = P × [((1 + r)ⁿ − 1) ÷ r] × (1 + r)
- · P = monthly investment; r = expected monthly return (annual ÷ 12 ÷ 100); n = number of months.
- · This assumes each instalment is invested at the start of the month.
Worked example
- ₹10,000 a month for 10 years at an assumed 12% a year.
- Total invested: ₹12,00,000.
- Estimated value: about ₹23,23,000 — gains of about ₹11,23,000.
- The same SIP for 20 years would grow to far more than double, because of compounding.
Tips
- 1Start early — the extra years of compounding matter more than the amount.
- 2Increase your SIP when your income rises (a ‘step-up’).
- 3Use conservative return assumptions when planning goals.
- 4Read scheme documents and consider speaking to a registered adviser.
Frequently asked questions
How is SIP return calculated?
It uses the future value of a series of monthly investments: P × [((1 + r)ⁿ − 1) ÷ r] × (1 + r), where r is the monthly return and n the number of months.
Are SIP returns guaranteed?
No. Mutual fund returns depend on market performance and can be negative. Calculators show illustrations only.
What is a good return to assume?
There is no guaranteed figure. Many planners use conservative assumptions and review regularly against actual performance.
Can I stop or change a SIP?
Most SIPs can be paused, changed or stopped, subject to the fund's terms.