How to calculate the retention ratio, step by step
The retention ratio is the share of net income a company keeps after paying dividends. It tells you how much profit stays in the business to fund growth, pay down debt or build a cushion. A high ratio means the company keeps most of its profit; a low ratio means it pays most of it out.
The formula is simple: retention ratio = retained earnings ÷ net income, and retained earnings = net income − dividends. So retention ratio = (net income − dividends) ÷ net income. If a company earns $500,000 and pays $200,000 in dividends, it keeps $300,000 — and $300,000 ÷ $500,000 = 60.00%. The payout ratio is the complement — dividends ÷ net income — so 60.00% retained plus 40.00% paid out always adds to 100%.
The worked example, line by line. Step 1 — net income: $500,000. Step 2 — dividends: $200,000. Step 3 — retained earnings: $500,000 − $200,000 = $300,000. Step 4 — the ratio: $300,000 ÷ $500,000 = 0.60, or 60.00%. Step 5 — the check: the payout ratio is $200,000 ÷ $500,000 = 40.00%, and 60.00% + 40.00% = 100%.
What the number means
A 60.00% retention ratio means the company keeps $300,000.00 of every $500,000 of profit — a healthy balance for a growing company: enough kept to fund new projects, enough paid out to reward shareholders. A ratio of 50–70% is typical for a mature, steady company. A ratio of 100.00% means nothing is paid out — common for young companies that reinvest everything. A ratio of 0.00% means every dollar is paid out, which leaves nothing for growth. A negative ratio means the company paid out more than it earned — possible for a year or two from reserves, but it cannot last.
For a target of 50.00%, the dividends needed are $250,000.00 — net income × (100% − target) = $500,000 × 50.00% = $250,000.00 — and the net income allowed is $400,000.00 — dividends ÷ (100% − target) = $200,000 ÷ 50.00% = $400,000.00. These answer the two questions managers ask: how much can we pay out and still keep half, and how little can we earn and still keep half.
At other sizes the same arithmetic holds: net income of $600,000 and dividends of $200,000 give 66.67% (unrounded 66.6667%) and $400,000.00 kept, while dividends of $400,000 against the same $600,000 give 33.33% (unrounded 33.3333%) and $200,000.00 kept.
Retention ratio vs payout ratio, dividend yield and profit margin
The retention ratio and the payout ratio are the same fact from opposite sides: retention ratio = 1 − payout ratio. If the payout ratio is 40.00%, the retention ratio is 60.00% — always, by definition. The dividend yield is different: it divides the dividend per share by the share price, not by earnings, so it tells you what the dividend is worth as an investment return. A depressed share price can give a high yield with a low payout ratio, and a high price the reverse.
Profit margin is different again: it divides net income by revenue, not by dividends, so it tells you how efficiently the company turns sales into profit. A very profitable company can still pay out most of its profit, giving a low retention ratio. The retention ratio says nothing about profitability; it says only what happens to the profit once it exists.
The sustainable-growth link
The retention ratio feeds directly into the sustainable growth rate: sustainable growth = return on equity × retention ratio. A company earning 15% on equity and keeping 60.00% of its profit can grow at 9% a year without new capital. Raise the retention ratio and the same company can grow faster still — that is why growth companies keep so much. But keeping profit only helps if the company earns a good return on it.
Traps to avoid
First, the edges. If dividends are $0, the ratio is 100.00% and $500,000.00 is kept — nothing paid out. If net income is $0, the ratio is undefined: there are no earnings to divide by, so there is nothing to keep a share of. If dividends exceed net income the ratio goes negative — the company paid out more than it earned. And if net income is negative — a loss with dividends still paid — the ratio rises above 100% and retained earnings go negative: the arithmetic still works, but a loss cannot be retained in the usual sense.
Second, the rounding. The ratio is displayed to two decimals, half-up. With net income of $600,000 and dividends of $200,000 the ratio is 66.67% (unrounded 66.6667%) — below it unrounded. Always print the unrounded figure when the boundary matters.
Third, the period. Net income and dividends must cover the same period — the same quarter, the same year. Mixing a full year’s earnings with one quarter’s dividend gives a ratio that means nothing. And watch for special dividends: a one-off payout inflates the payout ratio and depresses the retention ratio, even though the ordinary policy has not changed.
Fourth, buybacks. Buybacks are the other way cash returns to shareholders: a company that keeps a high share and buys back shares can return more cash than one that keeps a low share and buys back nothing — read retention alongside buybacks, not alone.
Frequently asked questions
How do I calculate the retention ratio?
Divide retained earnings by net income. ($500,000 − $200,000) ÷ $500,000 = 60.00%.
What is a good retention ratio?
It depends on the return on equity. A 60.00% ratio suits a growing company earning a good return — but keeping profit only helps if the company earns a good return on it.
Can the retention ratio be negative?
Yes. If dividends exceed net income the ratio goes negative: the company paid out more than it earned, so the kept share is negative.
What is the retention ratio if no dividends are paid?
100.00%. If dividends are $0, the ratio is 100.00% and $500,000.00 is kept — nothing is paid out.
What is the retention ratio if net income is zero?
Undefined. If net income is $0, there are no earnings to divide by, so there is nothing to keep a share of.
How is the retention ratio different from the payout ratio?
They are complements. Retention ratio = 1 − payout ratio. If the payout ratio is 40.00%, the retention ratio is 60.00% — always, by definition.
How does the retention ratio link to growth?
Sustainable growth = return on equity × retention ratio. A company earning 15% on equity and keeping 60.00% of its profit can grow at 9% a year without new capital.
Why does 66.6667% display as 66.67%?
Rounding, half-up to two decimals. A ratio of 66.6667% displays as 66.67% — but it is below 66.67% unrounded.