Sustainable Growth Rate Calculator

The calculation of the sustainable growth rate relies on two core metrics: the retention ratio and the return on equity (ROE). First, the retention ratio determines what proportion of net income is kept inside the business rather than paid out as dividends. The formula is: Retention Ratio = (Net Income - Dividends Paid) / Net Income. Next, Return on Equity measures how effectively management uses equity to generate profit: ROE = Net Income / Shareholder Equity. Finally, multiplying the retention ratio by the ROE yields the sustainable growth rate: Growth = Retention Ratio * ROE.

Imagine a mid-sized manufacturing company, Apex Corp, looking to evaluate its expansion potential for the upcoming fiscal year. Apex reports a Net Income of $1,000,000 and distributes $400,000 in Dividends Paid to its shareholders. Its total Shareholder Equity stands at $5,000,000. First, we find the retention ratio: ($1,000,000 - $400,000) / $1,000,000 = 0.60, meaning the firm retains 60% of its earnings. Second, we compute the ROE: $1,000,000 / $5,000,000 = 0.20 or 20%. Multiplying these two factors together (0.60 * 0.20) gives an SGR of 0.12, or 12%. This means Apex Corp can grow its revenues and operations by up to 12% next year using only its retained earnings.

When analyzing your firm's sustainable growth rate, keep these vital tips in mind to ensure accurate financial planning. First, remember that SGR assumes a constant debt-to-equity ratio; if your financing mix changes, your actual growth capacity will shift. Second, look at rolling multi-year averages rather than single-year snapshots, as volatile net income or seasonal dividend payouts can heavily distort the retention ratio. Finally, use SGR as a benchmark against your actual sales growth to spot potential overtrading or underutilized capital assets.