Retention Ratio Calculator (Plowback Ratio)
Enter a company's net income and dividends paid to find its retention ratio, also called the plowback ratio. The calculator shows how earnings split between reinvestment and shareholder distributions, computes the complementary dividend payout ratio, estimates the sustainable growth rate when you add return on equity, and charts the earnings split at a glance.
Formula
Worked example
A company earns $1,000,000 in net income and pays $250,000 in dividends. Retained earnings = $750,000. Retention ratio = $750,000 / $1,000,000 = 75%. The complementary payout ratio is 25%. If the company's ROE is 15%, the sustainable growth rate = 15% x 75% = 11.25% per year.
What is the retention ratio?
The retention ratio, also called the plowback ratio, is the proportion of net income that a company keeps after paying dividends to shareholders. It measures how much profit is funnelled back into the business for reinvestment in projects, equipment, research, debt reduction, or other purposes. A retention ratio of 0.75 means the company retains 75 cents of every dollar it earns and distributes the remaining 25 cents as dividends. The ratio always sums to 1.00 (100%) when added to the dividend payout ratio, because every dollar of net income must either be retained or distributed.
How to calculate the retention ratio
There are two equivalent methods. The direct method subtracts dividends paid from net income to get retained earnings, then divides by net income: Retention Ratio = (Net Income - Dividends) / Net Income. The alternative method starts from the dividend payout ratio and simply subtracts it from 1: Retention Ratio = 1 - Payout Ratio. Both produce the same result. This calculator supports both approaches. If you already know the payout ratio from a financial report, select "From payout ratio" to skip entering raw dollar figures. If you are working from an income statement, use the "Net income and dividends" mode.
Sustainable growth rate: how retention drives future growth
The sustainable growth rate (SGR) is the maximum rate at which a company can increase revenues without raising new external equity or changing its capital structure. The classic formula, developed by Robert Higgins, is SGR = ROE x Retention Ratio. If a company earns a 15% return on equity and retains 75% of earnings, the SGR is 0.15 x 0.75 = 0.1125, or 11.25% per year. Any growth target above this rate requires either issuing new shares, borrowing more, improving profitability, or raising the retention ratio. The SGR is a quick sanity check on whether a company's growth ambitions are internally fundable.
How to interpret the retention ratio by company type
High retention ratios (above 60%) are common in fast-growing sectors such as technology, biotechnology and e-commerce, where reinvesting earnings generates returns far above what shareholders could earn elsewhere. Low retention ratios (below 40%) are typical of mature, capital-light businesses with stable cash flows, such as utilities, consumer staples and real estate investment trusts (REITs), which are often legally required to distribute at least 90% of taxable income. A sudden change in the retention ratio is worth investigating: a sharp increase may signal aggressive expansion or a dividend cut, while a sharp decrease could mean profitability pressure or a deliberate pivot toward shareholder returns. Context matters - compare the ratio against industry peers and the company's own multi-year history.
Typical retention ratios by industry sector
| Sector | Typical retention ratio | Strategy profile |
|---|---|---|
| Technology | 70-90% | High reinvestment, low or no dividends |
| Healthcare / Pharma | 50-70% | R&D intensive, growing dividends |
| Consumer discretionary | 40-65% | Growth and income balance |
| Consumer staples | 40-60% | Mature, steady dividends |
| Industrials | 35-55% | Capital expenditure plus dividends |
| Financials (banks) | 30-50% | Regulated payout requirements |
| Utilities | 20-40% | Income-focused, high payout |
| Real estate (REITs) | 0-10% | Legally required to distribute 90%+ |
Approximate ranges observed across publicly listed companies. Actual figures vary by company, economic cycle, and capital needs.
Frequently asked questions
What is a good retention ratio?
There is no single "good" ratio; the appropriate level depends on the company's growth stage and industry. High-growth technology companies often retain 80% or more of earnings because reinvestment earns high returns. Mature utility or consumer-staples companies may retain as little as 20-40% while still being well-managed. The key question is whether the capital retained earns a return above the company's cost of equity. If it does, a higher retention ratio creates value; if it does not, returning capital to shareholders is better.
What is the difference between the retention ratio and the payout ratio?
They are two sides of the same coin. The payout ratio is the fraction of net income paid out as dividends; the retention ratio is the fraction kept by the company. They always add up to 100%. Retention ratio = 1 minus the payout ratio, and vice versa.
Why is it also called the plowback ratio?
The name comes from the agricultural metaphor of plowing crop residue back into the soil to enrich future harvests. In finance, the retained portion of earnings is "plowed back" into the business to fund future growth, analogous to reinvesting in the soil rather than consuming everything in the current season.
What happens if a company retains 100% of earnings?
A 100% retention ratio means the company pays no dividends at all. This is common for early-stage or high-growth firms that need every dollar to fund expansion. It is not inherently negative as long as the reinvested capital earns adequate returns. Growth investors often prefer companies with high retention ratios because it signals confidence in future growth opportunities.
How does the retention ratio affect the sustainable growth rate?
The sustainable growth rate (SGR) is calculated as ROE multiplied by the retention ratio. A higher retention ratio means more retained earnings are being reinvested, so the company can grow faster without seeking external financing. For example, a company with 20% ROE and 75% retention ratio has an SGR of 15%; if it increases retention to 90%, the SGR rises to 18%. This shows why rapidly growing companies typically minimize dividends.
Can the retention ratio be negative?
In theory, if a company pays dividends that exceed its net income (drawing on cash reserves or borrowings), the retention ratio turns negative. This is mathematically valid but unsustainable for long: a company cannot indefinitely pay more in dividends than it earns without depleting cash or increasing debt. This calculator treats inputs where dividends exceed net income as invalid and returns no result.