The Sustainable Growth Rate (SGR) is a financial metric used to estimate the maximum rate at which a company can grow its sales and earnings without increasing its financial leverage (i.e., without issuing new debt or equity). It's a key indicator of a company's ability to self-fund its growth.
Understanding the Sustainable Growth Rate Formula
The Sustainable Growth Rate (SGR) is calculated using the following formula:
SGR = Net Profit Margin × Asset Turnover × Equity Multiplier × Retention Ratio
Alternatively, it can be expressed as:
SGR = Return on Equity (ROE) × Retention Ratio
Where:
Net Profit Margin: Measures how much net income is generated as a percentage of revenue.
Asset Turnover: Measures how efficiently a company uses its assets to generate sales.
Equity Multiplier: Measures financial leverage. A higher equity multiplier indicates more debt financing relative to equity. It is calculated as Total Assets / Total Equity.
Return on Equity (ROE): Measures a company's profitability by revealing how much profit a company generates with the money shareholders have invested. It is calculated as Net Profit Margin × Asset Turnover × Equity Multiplier.
Retention Ratio: The proportion of net income that a company retains and reinvests in the business, rather than distributing as dividends. It is calculated as 1 – Dividend Payout Ratio.
A company's SGR indicates its capacity for internal growth. If a company consistently grows faster than its SGR, it might be increasing its financial risk. Conversely, if it grows slower, it might not be fully leveraging its potential for profitable expansion.
Example Calculation
Let's consider a company with the following financial figures for 2024:
Now, we calculate the Sustainable Growth Rate (SGR):
SGR = ROE × Retention Ratio
SGR = 0.54 × 0.70 = 0.378 or 37.8%
This means the company can sustain a growth rate of up to 37.8% per year without altering its financial structure or taking on additional debt relative to its equity.
function calculateSGR() {
var netProfitMargin = parseFloat(document.getElementById("netProfitMargin").value);
var assetTurnover = parseFloat(document.getElementById("assetTurnover").value);
var equityMultiplier = parseFloat(document.getElementById("equityMultiplier").value);
var retentionRatio = parseFloat(document.getElementById("retentionRatio").value);
var resultDiv = document.getElementById("result");
resultDiv.innerHTML = "";
if (isNaN(netProfitMargin) || isNaN(assetTurnover) || isNaN(equityMultiplier) || isNaN(retentionRatio)) {
resultDiv.innerHTML = "Please enter valid numbers for all fields.";
return;
}
if (netProfitMargin < 0 || assetTurnover <= 0 || equityMultiplier <= 0 || retentionRatio 1) {
resultDiv.innerHTML = "Please enter valid positive values. Net Profit Margin and Retention Ratio can be between 0 and 1 (or represent percentages). Asset Turnover and Equity Multiplier should be positive.";
return;
}
var roe = netProfitMargin * assetTurnover * equityMultiplier;
var sgr = roe * retentionRatio;
resultDiv.innerHTML =
"