📊 Retention Ratio Calculator
Calculate the earnings retention ratio (plowback ratio) from net income and dividends paid.
Retention Ratio Formula
= 1 − Dividend Payout Ratio
The retention ratio (also called the plowback ratio or earnings retention ratio) measures the proportion of net income a company retains internally rather than distributing to shareholders as dividends. A retention ratio of 0.70 means 70% of earnings are reinvested in the business; 30% is paid out as dividends.
Why the Retention Ratio Matters for Growth
The retention ratio is a direct input into the Sustainable Growth Rate (SGR) formula: SGR = ROE × Retention Ratio. A company with 15% ROE and a 70% retention ratio can sustain 10.5% annual growth entirely from internally generated funds without issuing new equity or taking on additional debt. This makes the retention ratio a key indicator of a company’s capacity for self-funded growth. High-growth companies (technology, healthcare, early-stage) typically retain 80–100% of earnings (paying zero or minimal dividends) to fund expansion. Mature, stable companies (utilities, consumer staples, telecoms) typically retain 40–60%, returning the rest to shareholders who value predictable income. The optimal retention ratio depends entirely on the business’s ability to reinvest earnings at returns exceeding its cost of capital — if a company can reinvest at 20% ROIC when its WACC is 8%, retaining every dollar creates substantial value. If ROIC barely exceeds WACC, returning cash via dividends or buybacks is more value-accretive.
Retention Ratio vs Dividend Payout Ratio
The retention ratio and dividend payout ratio are perfectly complementary: Retention Ratio + Payout Ratio = 1.0 (100%). A company with a 30% payout ratio has a 70% retention ratio. These ratios move inversely — increasing dividends reduces the retention ratio and reduces the SGR, all else equal. Analyzing trends in both ratios over time reveals management’s capital allocation philosophy: a rising payout ratio over time signals a maturing business transitioning from growth to income generation. A company cutting its payout ratio (retaining more) is signaling confidence in future investment opportunities. A company with a payout ratio above 100% (paying dividends that exceed net income) is funding dividends from reserves or debt — an unsustainable practice that often precedes a dividend cut.
There is no universally ‘good’ retention ratio — it depends on the company’s growth stage and investment opportunities. Growth companies (tech, biotech, small caps) typically have ratios of 80–100% (retaining nearly all earnings for reinvestment). Value and income companies (utilities, telecoms, REITs) typically have ratios of 30–60%, returning the majority of earnings as dividends. The quality of the ratio matters more than the level: a 90% retention ratio is excellent if the company reinvests at 20%+ ROIC; it’s value-destructive if reinvestment returns only 5%.
SGR = ROE × Retention Ratio. A company with 18% ROE and 0.75 retention ratio has an SGR of 13.5% — meaning it can grow revenue, earnings, and assets at 13.5% per year without external financing. Growing faster requires new equity or increased leverage. Growing slower means accumulating excess cash (which should be returned to shareholders if no high-ROIC investments are available). The SGR framework links dividend policy directly to growth capacity.
A payout ratio above 100% means dividends exceed net income in that period. The company is paying dividends from prior retained earnings, asset sales, or borrowed funds. This is unsustainable long-term and is a strong warning signal: it implies either earnings have temporarily declined and management expects recovery, or the dividend is at serious risk of being cut. Investors in income stocks should monitor payout ratios closely — a payout ratio approaching or exceeding 100% historically precedes dividend cuts.