Analyze the efficiency of your capital allocation and growth performance.
Investment Analysis Summary
Total Return on Investment0.00%
Annualized Rate (CAGR)0.00%
Net Profit/Loss$0.00
Total Capital Deployed$0.00
Understanding the Investor's Rate of Return
For any serious investor, measuring performance goes beyond looking at simple price appreciation. The "Investor's Rate" is a comprehensive metric that accounts for initial capital, ongoing costs, periodic income (like dividends or rent), and the time horizon of the investment.
Key Metrics Defined
Total Return on Investment (ROI): The absolute percentage gain or loss generated on the total capital deployed over the entire life of the investment.
Annualized Rate (CAGR): This is perhaps the most important metric. It represents the geometric mean return that provides the same total return over the time period as if the investment had compounded at a steady rate. It allows investors to compare different assets (like stocks vs. real estate) on a level playing field.
Net Profit: The actual cash remaining after accounting for all income received and subtracting every dollar of initial capital and maintenance expenses.
Calculation Logic
The calculator uses the following mathematical framework:
Total Cost = Initial Capital + Administrative Costs
Total Gain = Current Valuation + Periodic Income
Total ROI % = ((Total Gain – Total Cost) / Total Cost) * 100
Annualized Rate % = ((Total Gain / Total Cost) ^ (1 / Years) – 1) * 100
Practical Example
Imagine you purchased a private equity stake for $100,000. Over 4 years, you paid $2,000 in legal and management fees. During that time, the company paid you $8,000 in dividends. You eventually sold the stake for $140,000.
Total Capital Deployed: $102,000
Total Value Realized: $148,000
Net Profit: $46,000
Total ROI: 45.10%
Annualized Rate: 9.76%
This "Investor's Rate" of 9.76% gives you a clear benchmark to compare against the S&P 500 or other alternative investment opportunities.
function calculateInvestorRate() {
var initial = parseFloat(document.getElementById('initialCapital').value);
var current = parseFloat(document.getElementById('currentValuation').value);
var years = parseFloat(document.getElementById('holdingYears').value);
var income = parseFloat(document.getElementById('periodicIncome').value) || 0;
var costs = parseFloat(document.getElementById('adminCosts').value) || 0;
if (isNaN(initial) || isNaN(current) || isNaN(years) || initial <= 0 || years <= 0) {
alert("Please enter valid positive numbers for Capital, Valuation, and Years.");
return;
}
var totalCost = initial + costs;
var totalRealizedValue = current + income;
var netProfitValue = totalRealizedValue – totalCost;
// Total ROI
var totalRoiPerc = (netProfitValue / totalCost) * 100;
// Annualized Rate (CAGR formula)
// CAGR = [(Ending Value / Beginning Value) ^ (1 / t)] – 1
var annualizedRatePerc = (Math.pow((totalRealizedValue / totalCost), (1 / years)) – 1) * 100;
// Display results
document.getElementById('resultsArea').style.display = 'block';
document.getElementById('totalRoi').innerText = totalRoiPerc.toFixed(2) + "%";
document.getElementById('annualizedRate').innerText = annualizedRatePerc.toFixed(2) + "%";
document.getElementById('netProfit').innerText = "$" + netProfitValue.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById('totalDeployed').innerText = "$" + totalCost.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
// Color logic for profit/loss
if (netProfitValue < 0) {
document.getElementById('netProfit').style.color = "#b21f1f";
document.getElementById('totalRoi').style.color = "#b21f1f";
} else {
document.getElementById('netProfit').style.color = "#2c3e50";
document.getElementById('totalRoi').style.color = "#2c3e50";
}
}