What it means
The calculation is deliberately simple: total equity divided by total assets, both taken straight from the balance sheet with no risk adjustments. That simplicity is the point, because it cannot be flattered by clever assumptions about which assets are safe.
The ratio is most often used for banks, where it is sometimes called the leverage ratio and acts as a backstop to more complex risk based measures. Regulators added it after episodes in which institutions reported healthy risk based ratios while holding very little real equity against very large balance sheets.
Non-financial businesses use the same idea under different names, and the inverse of the ratio is the equity multiplier. A capital to assets ratio of 10% is the same thing as an equity multiplier of ten times, meaning assets are ten times the owners' stake.
The practical reading is about survival. If assets are funded 10% by equity, a fall in asset values of just over 10% technically wipes out the owners, which is why highly geared balance sheets are so sensitive to small changes in valuation.
The trade off is that low capital, high leverage structures magnify returns in good years. Shareholders in a thinly capitalised business earn a far higher return on their smaller stake when things go well, and lose it fastest when they do not.
In practice
Real-world examples.
Example
A savings bank targets a capital to assets ratio of at least 9% in its internal policy, well above the regulatory floor. When an acquisition would push the combined ratio to 7.8%, the board funds part of the deal with new shares rather than cash.
Example
An industrial group with total assets of $840,000,000 and equity of $210,000,000 reports a ratio of 25%. Its bankers treat that as conservative for a capital intensive manufacturer and offer a lower margin on a new facility.
Example
A property investment company sees its ratio fall from 32% to 24% after a revaluation writes down its portfolio. Nothing has been sold and no cash has moved, but its covenant headroom shrinks and refinancing terms tighten.
Think of it
“Capital to assets shows what portion of your assets you actually own-equity as a share of total assets.
Formula
Calculation
Capital to assets ratio = total equity / total assets x 100
A commercial bank reports total assets of $2,500,000,000 and total equity of $250,000,000. Its capital to assets ratio is $250,000,000 / $2,500,000,000 = 0.10, or 10%, which is the same as an equity multiplier of $2,500,000,000 / $250,000,000 = 10 times.
Now suppose the bank recognises $100,000,000 of loan losses. Equity falls to $250,000,000 - $100,000,000 = $150,000,000 and assets fall to $2,500,000,000 - $100,000,000 = $2,400,000,000, so the ratio becomes $150,000,000 / $2,400,000,000 = 0.0625, or 6.25%.
A loss equal to only 4% of assets has therefore cut the capital ratio by more than a third, from 10% to 6.25%. That amplification is exactly what the ratio is designed to make visible before it happens rather than after.Case study
Seen in the real world.
This is an illustrative and clearly fictional example. Ardmore Regional Bank, an invented lender, grew its balance sheet from $1,200,000,000 to $2,500,000,000 in four years while paying out most of its profits as dividends. Its risk based ratios stayed within limits because much of the growth was in low risk weighted mortgages.
The plain capital to assets ratio told a different story, drifting from 12% to 10% and then to 8.5% as the balance sheet outgrew retained profits. When a modest downturn produced fictional loan losses of $90,000,000, the simple ratio fell below the level at which the imaginary supervisor was willing to approve further dividends.
Ardmore's illustrative management team had to suspend distributions for two years to rebuild capital. The point of the story is that a measure ignoring risk weightings can flag a build up of leverage that risk based measures politely overlook.
Watch out
Common mistakes.
- Comparing the ratio across industries, since a bank at 10% and a software firm at 70% are not measuring the same kind of risk at all.
- Forgetting that intangible assets and goodwill sit in the denominator, which can make the ratio look healthier than the tangible cushion actually is.
- Treating a rising ratio as unambiguously good, when it can also mean the business is shrinking its balance sheet or failing to invest.
Questions
People also ask.
How does this differ from the capital to risk assets ratio?
This one uses total assets as reported, while the risk based version weights each asset by how risky it is, so the two can give very different pictures.
What is a reasonable level for a bank?
Regulatory leverage floors commonly sit in the low single digits, and most established banks run comfortably above that, often somewhere between 6% and 12%.
Can the ratio be improved without raising new shares?
Yes, by retaining profits instead of paying dividends, or by selling assets and using the proceeds to repay liabilities.
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