SIP Calculator

SIP stands for Systematic Investment Plan — a method of investing a fixed amount into a mutual fund at regular intervals, typically every month. Instead of trying to time the market by putting in a large lump sum at the "right" moment, SIP spreads your investment across many market cycles, letting time and discipline do the heavy lifting.

The mechanism behind SIP's power is rupee-cost averaging. When markets fall and NAV (Net Asset Value) drops, your fixed monthly amount buys more units. When markets rise, you buy fewer units but your existing ones appreciate. Over time, this averaging effect means your cost per unit is almost always lower than the simple average NAV — you systematically benefit from market volatility instead of being hurt by it.

What separates successful SIP investors from those who give up mid-way is not intelligence or market knowledge — it is discipline. The compounding engine that makes SIP so powerful needs time to work. A ₹10,000 monthly SIP for 10 years at 12% grows to about ₹23 lakh. Extend it to 20 years and the same monthly investment grows to over ₹99 lakh — more than four times as much, for just double the duration. The last few years of a long SIP contribute disproportionately to wealth creation, which is why stopping early is the most expensive mistake most investors make. Market dips, job changes, or short-term goals should not derail a well-started SIP — they are precisely the conditions under which SIP does its best work.

SIP maturity value is calculated using the future value of an annuity formula:

Here, P is the monthly SIP amount, r is the monthly interest rate (annual expected return divided by 12, then divided by 100), and n is the total number of monthly instalments (years × 12). The “(1 + r)” multiplied at the end accounts for the fact that each instalment is invested at the beginning of the month, so it earns one additional month of returns.

Worked example: ₹10,000 per month SIP for 15 years at 12% expected annual return.

• P = ₹10,000
• r = 12% ÷ 12 ÷ 100 = 0.01 (monthly rate)
• n = 15 × 12 = 180 months

Step 1: (1 + 0.01)^180 = 5.9958. Step 2: (5.9958 − 1) ÷ 0.01 = 499.58. Step 3: 499.58 × (1 + 0.01) = 504.58. Step 4: 10,000 × 504.58 = ₹50,45,751 total maturity value. Your total invested amount over 15 years is just ₹18,00,000 — meaning ₹32,45,751 is pure wealth generated by compounding. That is a wealth multiplier of 2.8x from disciplined monthly investing alone.

This calculator is built for anyone who wants to convert a regular savings habit into a concrete wealth projection. First-time investors can use it to answer the most common starting question: “If I invest ₹5,000 a month, what will I have in 10 years?” Seeing a real number — say, ₹11.6 lakh at 12% — makes the abstract idea of investing tangible and motivating enough to actually start.

Retirement planners can reverse-engineer the calculator: if you want ₹2 crore at retirement in 25 years, plug that target into your thinking and work backwards to find the monthly SIP you need to start today. Starting 5 years earlier can halve the required monthly amount. Goal-based investors saving for a house down payment, a child's higher education abroad, or a business venture can set a specific corpus target and a deadline, then use the calculator to find exactly what monthly investment gets them there — and adjust the rate assumption conservatively to stress-test the plan. Whatever your situation, running the numbers takes less than a minute and removes the guesswork from one of the most important financial habits you can build.