Calculate your future wealth and estimated returns from systematic monthly investments.
| Year | Total Invested | Estimated Returns | Total Wealth Value |
|---|
A Systematic Investment Plan (SIP) is a structured investment style that allows you to allocate a fixed sum of money into a mutual fund, ETF, or stock portfolio at regular monthly intervals. Instead of waiting to accumulate a large amount of cash to buy into the market, a SIP enables you to invest small amounts consistently. Over time, this disciplined approach takes advantage of compounding returns and rupee-cost averaging to build significant long-term wealth.
Our SIP Calculator is a free, browser-based financial tool designed to project these systematic returns instantly. Built entirely in vanilla JavaScript, the calculator processes all data locally within your browser. It requires no signup, no email login, and sends no data back to external servers, providing a secure and completely private environment for your wealth planning.
In my experience building investment utilities, I have found that consistency beats timing the market. Many retail investors wait for "the perfect dip," only to miss months of compounding. Investing ₹5,000 every single month regardless of market fluctuations is one of the most effective ways to lower average purchase costs, a mechanism known globally as dollar-cost averaging. Our tool helps you visualize this compounding progress, projecting exactly how much your small regular savings can grow over decades.
When inputs are adjusted, the script recalculates your total contributions and expected returns. The calculator follows this step-by-step logic:
Because SIP contributions are made recurringly, standard compound interest formulas do not apply. Instead, we use the Future Value of an Annuity Due formula:
FV = P * [ ((1 + i)^n - 1) / i ] * (1 + i)Where:
The term $(1 + i)$ at the end of the formula accounts for the fact that contributions are made at the beginning of each period (Annuity Due), meaning each deposit compiles interest for the entire month.
One of the greatest advantages of a SIP is its ability to smooth out market volatility through dollar-cost or rupee-cost averaging. When stock or mutual fund prices are high, your fixed monthly contribution buys fewer units. When prices drop during a market correction, your same fixed contribution automatically purchases more units. When the market eventually recovers, the average cost of your accumulated units is lower than the peak price, enhancing your net gains.
When I first built this tool, I modeled how a consistent SIP performed over a volatile 5-year period compared to a lump-sum investment. The SIP investor, by continually accumulating units at lower prices, historically achieved a more stable and cost-efficient portfolio than the investor who tried to time a single large entry. Let's look at a wealth projection of ₹10,000 monthly at a 12% expected return over different horizons:
| Period (Years) | Total Invested | Estimated Returns | Future Value | Return Ratio (Returns / Invested) |
|---|---|---|---|---|
| 5 Years | ₹6,00,000.00 | ₹2,24,847.16 | ₹8,24,847.16 | 37.47% |
| 10 Years | ₹12,00,000.00 | ₹11,23,390.87 | ₹23,23,390.87 | 93.61% |
| 20 Years | ₹24,00,000.00 | ₹75,91,479.16 | ₹99,91,479.16 | 316.31% |
| 30 Years | ₹36,00,000.00 | ₹3,16,98,908.73 | ₹3,52,98,908.73 | 880.52% |
Note how the return ratio accelerates as time progresses. At 10 years, your returns are nearly equal to your invested principal. At 30 years, your returns are 8.8 times the amount you actually invested! This clearly displays why starting a SIP early and maintaining it over long horizons is the ultimate wealth creation engine.
Yes, in real-world mutual fund platforms, you can increase (step-up) or decrease your SIP contributions. This calculator assumes a constant monthly contribution for simplicity. To model yearly increases, you would use a Step-Up SIP calculator.
Unlike loan EMIs, there are no financial penalties from mutual fund houses if you miss a SIP payment. However, if your linked bank account has insufficient funds, your bank might charge standard ECS/NACH bounce fees. Consistent contributions are recommended to maximize compound gains.
For long-term equity mutual fund investments (10+ years), investors typically use a benchmark expected rate of 12% to 15% in developing markets like India, and 8% to 10% in mature markets like the US, based on historical market indices.
SIP contributions are taxed based on the type of fund (equity vs. debt) and the holding period of each individual monthly installment. Every monthly contribution is treated as a new investment with its own 12-month window for Short-Term Capital Gains (STCG) vs. Long-Term Capital Gains (LTCG) classification.
SIP is generally superior for retail investors because it removes emotional decision-making, requires no market-timing, and mitigates volatility. However, if you have a large cash sum during a market bottom, a lump-sum investment would theoretically yield higher overall returns due to immediate maximum market exposure.
Compound Interest Calculator – Track exponential investment growth with custom frequencies.
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Future Value Calculator – Find the future value of assets with varied frequencies.