Mutual Fund SIP Calculator
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Mutual Fund SIP Calculator
Your Projected Wealth
—
Maturity Amount (INR)
Understanding Systematic Investment Plans (SIP) and How This Calculator Works
A Systematic Investment Plan (SIP) is a popular and disciplined method for investing in mutual funds. It allows you to invest a fixed amount of money at regular intervals (usually monthly) into a chosen mutual fund scheme. This approach helps in averaging your purchase cost over time, reducing market timing risks, and building wealth gradually through compounding.
The Math Behind SIP: Compound Interest in Action
The SIP calculator uses a standard formula to estimate the future value of your investments, taking into account the power of compounding. The formula is derived from the future value of an annuity formula:
FV = P * [((1 + r)^n – 1) / r] * (1 + r)
Where:
- FV is the Future Value (Maturity Amount) of your investment.
- P is the periodic investment amount (your Monthly Investment Amount).
- r is the periodic interest rate. Since the calculator takes an annual growth rate, we need to convert it to a monthly rate: r = (Annual Growth Rate / 100) / 12.
- n is the total number of investment periods. Since investments are monthly, we convert the investment duration in years to months: n = Investment Duration (Years) * 12.
The calculator computes the total value you can expect to accumulate at the end of your investment horizon, assuming the expected annual growth rate is achieved consistently.
Why Use a SIP Calculator?
- Goal Planning: It helps you visualize the potential outcome of your regular investments, aiding in financial goal setting (e.g., buying a house, retirement, child's education).
- Investment Strategy: By tweaking the inputs (monthly investment, duration, expected returns), you can assess different investment scenarios and adjust your strategy accordingly.
- Understanding Compounding: It demonstrates the significant impact of long-term investing and compounding, motivating consistent investment behavior.
- Ease of Use: It provides a quick and easy way to get an estimated maturity amount without complex manual calculations.
Important Considerations:
- The growth rate is an *estimate* and not guaranteed. Actual returns may vary.
- This calculator does not account for taxes, exit loads, or other charges that might apply to mutual fund investments.
- It's advisable to consult with a qualified financial advisor before making any investment decisions.
function calculateSIP() {
var monthlyInvestment = parseFloat(document.getElementById("monthlyInvestment").value);
var annualGrowthRate = parseFloat(document.getElementById("annualGrowthRate").value);
var investmentYears = parseFloat(document.getElementById("investmentYears").value);
if (isNaN(monthlyInvestment) || isNaN(annualGrowthRate) || isNaN(investmentYears) ||
monthlyInvestment <= 0 || annualGrowthRate < 0 || investmentYears <= 0) {
document.getElementById("result").innerHTML = '
Invalid Input';
return;
}
var monthlyRate = (annualGrowthRate / 100) / 12;
var numberOfMonths = investmentYears * 12;
// Calculate Future Value of SIP
var maturityAmount;
if (monthlyRate > 0) {
maturityAmount = monthlyInvestment * (((Math.pow(1 + monthlyRate, numberOfMonths) – 1) / monthlyRate) * (1 + monthlyRate));
} else { // Handle case where growth rate is 0%
maturityAmount = monthlyInvestment * numberOfMonths;
}
var totalInvestment = monthlyInvestment * numberOfMonths;
var totalGains = maturityAmount – totalInvestment;
// Display result, formatted to two decimal places for clarity
var formattedMaturityAmount = maturityAmount.toFixed(2);
document.getElementById("result").innerHTML =
'
₹' + formattedMaturityAmount.replace(/\B(?=(\d{3})+(?!\d))/g, ",") + '' +
'
Estimated Maturity Amount (INR)';
}