Personal Finance · Investing SIP Calculator: How a Monthly Investment Builds Life-Changing Wealth
Use our live calculator to project your mutual fund SIP returns, understand the maths behind compounding, and build a smarter investment plan.
SIP return calculator — adjust sliders to see live results
Amount invested
₹18,00,000
Estimated returns
₹32,19,842
Amount invested —
₹18,00,000
Estimated returns —
₹32,19,842
Year-by-year growth breakdown
| Year | Monthly SIP | Total invested | Total value | Gains |
What is a SIP?
A Systematic Investment Plan (SIP) is a method of investing a fixed amount in a mutual fund at regular intervals — typically monthly. Rather than timing the market with a lump sum, SIP lets you invest consistently regardless of market conditions, a principle known as rupee cost averaging.
When markets fall, your fixed SIP buys more units. When they rise, your accumulated units gain value. Over time, this averaging effect smooths out volatility and builds wealth steadily. It is the single most accessible wealth-building tool available to retail investors in India.
The SIP formula explained
The calculator above uses the standard future value of an annuity formula, adjusted for monthly compounding:
M × [(1 + r)^n − 1] / r × (1 + r)
Where M = monthly SIP amount, r = monthly rate of return (annual rate ÷
12), and n = total number of months. The final multiplication by (1 + r) accounts for the
fact that SIP investments are made at the start of each period.
The key insight the formula reveals: time is the most powerful variable, not the rate of
return. Doubling your investment period has a far more dramatic effect on corpus than doubling the expected
return — a fact the growth chart above makes viscerally clear.
The power of compounding: why starting early matters
Consider two investors: Priya starts a ₹5,000/month SIP at age 25. Rohit starts the same SIP at age 35. Both
target retirement at 60, assuming 12% annual returns.
Priya — starts at 25
35-year SIP · ₹21,00,000 invested · Corpus: approx. ₹3.24 crore
Rohit — starts at 35
25-year SIP · ₹15,00,000 invested · Corpus: approx. ₹94.8 lakh
The 10-year gap
Priya invests ₹6L more but ends up with 3.4× the wealth. Time, not money, is the asset.
How to use this SIP calculator
1
Set your monthly amount — start with what you can comfortably afford. Even ₹500/month invested consistently beats ₹5,000 invested sporadically.
2
Choose a realistic return rate — large-cap equity funds have historically delivered 10–13% CAGR over 10+ year periods. Debt funds average 6–8%. Use a conservative estimate unless you have strong reasons otherwise.
3
Set your time horizon — SIP rewards patience. Below 5 years, market volatility can disrupt outcomes. Above 10 years, compounding becomes genuinely transformative.
4
Read the year-by-year table — notice how gains accelerate in the later years. This "hockey stick" effect is compounding at work and is the most compelling argument for starting now.
SIP vs lump sum: which is better?
Neither is universally superior. A lump sum investment outperforms SIP when markets are trending strongly upward — all your capital is deployed and compounding from day one. However, lump sum investing requires market timing, and most retail investors lack the discipline and data to time markets reliably.
SIP is better for salaried individuals investing monthly income, anyone without a large deployable corpus, and investors in volatile or uncertain market environments. SIP removes the emotional burden of timing and enforces regular savings discipline — which is itself a form of financial return.
Frequently asked questions
Is the return rate in this calculator guaranteed?
No. Mutual fund returns are market-linked and not guaranteed. The calculator uses an assumed rate to project future value — actual returns will vary based on fund selection, market conditions, and economic cycles.
Can I pause or stop a SIP mid-way?
Yes. Most mutual fund SIPs allow you to pause (for 1–3 months) or stop entirely without penalty. However, stopping a SIP early significantly reduces your final corpus, particularly in the early years when compounding is building momentum.
What is Step-Up SIP?
A Step-Up (or Top-Up) SIP lets you increase your monthly amount by a fixed percentage each year — typically 5–10%. This mirrors income growth and dramatically accelerates wealth creation. If your calculator allows it, always model with a step-up assumption.
Does this calculator account for inflation?
No. The figures shown are nominal (not inflation-adjusted). To estimate real purchasing power, subtract India's long-run inflation rate (approx. 5–6%) from your expected return rate when setting the slider.
How is SIP return taxed in India?
Equity mutual fund SIP units held over 1 year attract Long-Term Capital Gains (LTCG) tax of 10% on gains above ₹1 lakh per year (as of FY2024-25). Units redeemed within 1 year attract Short-Term Capital Gains (STCG) at 15%. Debt fund gains are taxed as per your income slab.
