Retention Ratio Calculator

Every rupee of profit leaves through one of two doors

A company finishes the year with profit. There are exactly two things it can do with it.

Hand it to shareholders as a dividend. Or keep it in the business.

That is the whole decision, and the two shares always add to one hundred percent, because there is nowhere else for the money to go.

The retention ratio also goes by the plowback ratio, which is a nicer image: the profit ploughed back into the field it came from.

The calculator wants dividends and net income, and returns both ratios to three decimal places, because the two are the same fact stated from either end and it is useful to see them together.

What makes the retention ratio worth a page of its own is that it is not merely a description of a payout policy. Combined with one other number, it tells you how fast the company can grow.

Splitting eight million

A company earns 8,000,000 after tax and pays 2,400,000 in dividends.

2,400,000 divided by 8,000,000 is 0.30, so the dividend payout ratio is 30 percent.

Which leaves the retention ratio at 70 percent. Five million six hundred thousand stays in the business.

With a million shares outstanding, the dividend works out at 2.40 a share, and at a share price of 200 that is a dividend yield of 1.20 percent. Notice how modest the yield looks even though the payout ratio is a healthy thirty percent. Yield and payout ratio answer different questions, one about the price you paid and one about the profit earned, and they move independently.

To see the retained portion as a currency figure rather than a percentage, our retained earnings calculator takes the payout ratio and returns the money.

Retention times return is the growth rate

Here is why this ratio matters more than it looks.

The money a company keeps does not sit in a drawer. It joins shareholders' equity, and next year the business earns a return on that larger equity base. So the rate at which the company can grow, without raising new money from anybody, is set by two things: how much it keeps, and how well it invests what it keeps.

Sustainable growth rate = Return on equity × Retention ratio

Our company earns a return on equity of 20 percent and retains 70 percent.

20 percent times 0.70 is 14 percent.

Now watch that be literally true rather than approximately. Equity started at 40,000,000. The business retained 5,600,000. Equity ends at 45,600,000.

5,600,000 divided by 40,000,000 is 14.00 percent. Exactly the figure the formula gave.

That is not a coincidence or a modelling convention. The sustainable growth rate simply is the rate at which the equity base grows when a company retains that share of that return. Everything else follows from it, because a business earning a steady return on a base growing at 14 percent will see its earnings grow at 14 percent too.

The trade-off becomes visible once you tabulate it. Same 20 percent return on equity, different payout decisions:

A company paying out everything cannot grow at all under its own steam. Not because it is badly run, but because there is nothing left to grow with.

So dividends are not free. Every rupee handed out is a rupee not compounding at the company's return on equity, and the sustainable growth rate is the price of that decision, stated in percentage points.

Whether the trade is worth making depends entirely on the return. Our return on equity calculator gives you the other half of the multiplication.

What a high or low retention ratio is signalling

Neither end of the scale is good or bad on its own. What matters is whether it fits the return the company earns.

High retention, high return on equity. The combination worth owning. The company keeps most of its profit and puts it to work at a rate shareholders could not easily match elsewhere. Young growing businesses look like this, and paying no dividend at all is entirely rational for them.

High retention, low return on equity. The one to be suspicious of. Profits are being held back and reinvested at a rate below what shareholders could get for themselves. Management is choosing to build a bigger company rather than a more valuable one, and the two are not the same thing. Our residual income calculator is where that shows up as a negative number.

Low retention, low return on equity. Often perfectly sensible. A mature business with no attractive projects left is right to hand the cash back and let shareholders find better uses for it. Utilities and established consumer businesses sit here for good reasons.

Low retention, high return on equity. Unusual, and worth asking about. A company earning excellent returns that chooses not to reinvest is either out of opportunities or being cautious about something.

Two practical notes. Look at several years, since a single year can be distorted by a special dividend or a weak profit, and the ratio is calculated against that year's earnings rather than against cash flow. And a payout ratio above 100 percent means the company paid out more than it earned, funding the difference from reserves or borrowing, which is not sustainable however comfortable it looks in the short run.

Questions people ask

Is the plowback ratio the same thing?

Yes, two names for the retained share of earnings. Plowback is the older and more descriptive one.

What is a good retention ratio?

It depends on the return the company earns on what it keeps. High retention makes sense when return on equity is strong, and much less sense when it is weak.

What about a company that pays no dividend at all?

Its payout ratio is zero and its retention ratio is one hundred percent, meaning everything is reinvested and the sustainable growth rate equals the full return on equity.

Is this the same as dividend yield?

No. The payout ratio compares dividends to profit. Dividend yield compares dividends to the share price. A company can have a high payout ratio and a low yield if its shares are expensive, which is exactly the case in the example above.

Can the payout ratio exceed 100 percent?

It can, when a company pays more in dividends than it earned that year, funding the gap from cash reserves or borrowing. The retention ratio then goes negative, which is a signal worth taking seriously if it persists.

Do share buybacks count as a payout?

Economically yes, since they return cash to shareholders, but this ratio counts dividends only. For companies that buy back heavily, the dividend payout ratio understates how much is actually being returned.

Where do I find the two figures?

Net income from the income statement, dividends paid from the cash flow statement or the statement of changes in equity. Both appear in any annual filing.

References

A note on the sources. The link between what a company retains and how fast it can grow is not a rule of thumb but an identity, and it underpins the growth term in every dividend and residual income valuation model. CFA Institute's treatment of residual income sets out the same relationship from the valuation side, with growth expressed through book value that accumulates as earnings are retained. Where the two input figures sit in a set of published accounts is explained in the Securities and Exchange Commission's guide for investors.

1. CFA Institute, Residual Income Valuation, on book value accumulating through retained earnings and on the role of retained earnings in the growth of intrinsic value. https://www.cfainstitute.org/insights/professional-learning/refresher-readings/2026/residual-income-valuation
2. U.S. Securities and Exchange Commission, Beginners' Guide to Financial Statements, on net income, on the statement of changes in equity, and on how the financial statements relate to one another. https://www.sec.gov/about/reports-publications/investorpubsbegfinstmtguide
3. U.S. Securities and Exchange Commission, Beginners' guide to financial statements, Investor.gov glossary entry. https://www.investor.gov/introduction-investing/investing-basics/glossary/beginners-guide-financial-statement
4. Brealey, R.A., Myers, S.C., and Allen, F., Principles of Corporate Finance, McGraw-Hill Education, chapters on payout policy and the sustainable growth rate.