What it means
Every profitable company faces a choice each year: pay profits out as dividends or keep them to strengthen the business. The profits that stay behind increase equity, and the internal capital generation rate measures how quickly that equity grows as a result.
The rate is driven by two things only. The first is how profitable the company is relative to its equity, which is its return on equity, and the second is the share of profit retained, which is the retention ratio.
Banks use the measure heavily because their lending is limited by regulatory capital. A lender that generates capital internally at 8% a year can grow its loan book at roughly that pace without needing outside investors, while a faster growth plan would require a share issue or a cut in dividends.
Non-financial companies use it too, as a quick test of whether an expansion plan is realistic. If management wants sales and assets to grow by 20% a year but internal capital grows by only 8%, the gap must be closed with debt, new equity or better margins.
It is closely related to the sustainable growth rate, and the two are often treated as near cousins. The sustainable growth rate usually assumes a stable debt-to-equity ratio, while the capital generation view looks at equity growth on its own.
The nuance is that the rate assumes profits remain at the same level and that retained earnings are not eaten by losses elsewhere. A single bad year, a large write-off or a rise in the payout ratio can lower the figure quickly.
In practice
Real-world examples.
Example
A community bank earns a 12% return on equity and pays out one third of its profit as dividends. Its retention ratio is about 67%, so internal capital grows at roughly 8% a year. The board uses that figure to set a loan growth target it can support without raising new capital.
Example
A family-owned furniture manufacturer wants to double its factory capacity in five years. The CFO calculates a 10% internal capital generation rate, which falls well short of what the plan requires. She proposes a bank loan for the difference and a lower dividend for the next three years.
Example
A fast-growing software company earns a 25% return on equity and retains all of its profit. Its internal capital generation rate is 25%, which lets it fund product development and hiring entirely from earnings. Investors value it highly because no dilution is needed to grow.
Formula
Calculation
Internal capital generation rate = Return on equity x Retention ratio
Return on equity = Net income / Average equity
Retention ratio = 1 - Dividend payout ratio
Suppose a company earns net income of $2,400,000 on average equity of $12,000,000. Return on equity is 2,400,000 / 12,000,000 = 20%. It pays out 25% of profit as dividends, so the retention ratio is 1 - 0.25 = 75%. The internal capital generation rate is 20% x 75% = 15%. As a check, retained profit is 2,400,000 x 0.75 = $1,800,000, and 1,800,000 / 12,000,000 = 15%.Case study
Seen in the real world.
This is an illustrative story about a fictional lender, Fairhaven Savings, which planned to grow its loan book by 15% a year. Its return on equity was 10% and it paid out 60% of profit in dividends, so retention was 40% and the internal capital generation rate was only 4%.
The treasury team presented the gap to the board. With capital growing by 4% and loans growing by 15%, the bank's capital ratio would slip below its target within two years, and regulators would expect action.
The board chose a blended response. It cut the payout to 30%, which lifted internal capital generation to 7%, slowed loan growth to 9%, and set aside plans for a modest share issue. The story is illustrative, but it shows how the rate turns a vague growth ambition into a concrete funding decision.
Watch out
Common mistakes.
- Confusing the rate with the return on equity. The capital generation rate is lower because it only counts the portion of profit that is kept.
- Assuming a high rate guarantees safe growth. If risks or losses rise faster than retained profit, capital can still run short.
- Forgetting that dividends and buybacks both reduce retained capital. A company that repurchases shares is returning capital in a different form.
Questions
People also ask.
Is the internal capital generation rate the same as the sustainable growth rate?
They are close and often equal under simple assumptions, but sustainable growth usually also assumes the debt ratio stays constant.
Why do regulators care about it?
Because it shows whether a bank can meet its capital requirements through earnings alone while its balance sheet grows.
How can a company raise the rate?
By improving profitability, cutting the dividend payout or both, though each choice has consequences for shareholders.
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