SIP Calculator

You do not need a massive lump sum of cash to build generational wealth in the stock market. A Systematic Investment Plan (SIP)—the practice of investing a small, fixed amount of money every single month regardless of market conditions—is the most reliable strategy for retail investors to accumulate millions over a working career. However, the human brain cannot intuitively comprehend exponential math. The SIP Calculator visually demonstrates the explosive power of compound interest, proving how investing just $200 a month can grow into a massive retirement portfolio over a few decades.

The Magic of Compound Interest

In a standard savings account, you earn simple interest. In the stock market, you earn Compound Interest—meaning you earn interest on your initial money, and then you earn interest on the interest you already earned.

In the first few years of a SIP, the growth is painfully slow and mostly consists of the actual cash you deposited. But around year 10 or 15, the math hits an inflection point. The interest generated by the massive portfolio begins to drastically exceed the monthly deposits. By year 30, nearly 80% of the portfolio's total value is pure, unearned compound interest, not money you physically worked for.

Dollar/Rupee Cost Averaging

A SIP automatically protects you from the stress of "timing the market." If the stock market crashes, human instinct is to panic and stop investing.

However, because a SIP deposits a fixed amount (e.g., $500) every month, you automatically buy fewer shares when the market is expensive, and more shares when the market has crashed and is on sale. This mathematically lowers the average cost of your shares over time, virtually guaranteeing a profit when the market inevitably recovers over a 10-year horizon.

How to Use the Calculator

Input your intended Monthly Investment amount. Next, input the Expected Annual Return Rate (historically, global index funds like the S&P 500 average around 10% to 12% annually, though past performance is no guarantee of future results).

Finally, input the Time Period (in years). The calculator will instantly generate a breakdown showing exactly how much physical cash you invested versus how much wealth was generated purely by compound interest. To calculate the efficiency of this investment against other assets, use our ROI Calculator.

The Hidden Threat of Inflation

While the calculator might show you becoming a millionaire in 30 years, you must understand that $1,000,000 in the year 2055 will not have the same purchasing power as it does today.

Inflation slowly destroys the value of fiat currency. If inflation averages 3% a year, a 10% stock market return is actually only a 7% "Real Return" in purchasing power. You can use our Inflation Calculator alongside the SIP tool to determine the true future value of your retirement nest egg.