What it means
The ratio sits at the intersection of two ideas: how profitable a company has been over its whole life, and how much of what it owns that profitability has actually paid for. It is calculated by dividing the retained earnings balance by total assets, and it is normally expressed as a percentage.
It matters because a business funded largely by its own past profits carries less obligation to outsiders. Assets bought with retained profit carry no interest and no repayment date, which makes the company far more resilient in a downturn than a competitor whose assets sit against bank debt.
The measure is best known as a component of the Altman Z-score, a widely used bankruptcy prediction model that weights retained earnings to total assets at 1.4, the second largest weighting in the formula. Its presence there reflects a simple observation: young companies with little accumulated profit fail more often than mature ones with a deep reserve.
Age drives much of the result, which is why comparisons need care. A twenty year old firm will usually show a far higher ratio than a five year old competitor of identical quality, so the measure is most useful against a company's own history or against peers of a similar vintage.
Dividend policy has a strong effect too. A profitable company that pays out almost everything it earns will show a low ratio, and that says something about how the owners choose to use profit rather than about whether the business can generate it.
A negative ratio is a genuine warning sign for a mature business. It means cumulative losses exceed cumulative profits, and that everything the company owns has been funded by lenders and shareholders rather than by trading success.
In practice
Real-world examples.
Example
A commercial lender comparing two haulage firms sees ratios of 31% and 4%. It approves the first at a lower margin, noting that the second has funded its fleet almost entirely with hire purchase agreements and has little accumulated profit to absorb a bad year.
Example
A family business considering a large special dividend models the effect on the ratio, which would fall from 38% to 19%. The directors decide to phase the payment across three years to keep the balance sheet strong enough for a planned bank facility.
Example
An analyst tracking a listed retailer notes the ratio has slipped from 22% to 9% in four years while revenue grew. The cause is an aggressive store expansion funded by debt, and the analyst flags the rising fragility despite the growth story.
Think of it
“Retained earnings to assets shows how much of your assets were funded by reinvested profits.
Formula
Calculation
Retained earnings to assets ratio = retained earnings / total assets
An established packaging manufacturer has retained earnings of $6,000,000 and total assets of $24,000,000. The ratio is $6,000,000 / $24,000,000 = 0.25, or 25%, so a quarter of its asset base has been funded from profits kept in the business.
A competitor of the same size, with total assets of $24,000,000 but retained earnings of only $3,000,000, scores $3,000,000 / $24,000,000 = 0.125, or 12.5%. The second company depends twice as heavily on debt and shareholder funding to hold the same assets.
Within the Altman Z-score the first company contributes 1.4 x 0.25 = 0.35 to its overall score, while the second contributes 1.4 x 0.125 = 0.175, so the difference in accumulated profit alone moves the bankruptcy score by 0.175 points.Case study
Seen in the real world.
This case is illustrative and the businesses named are fictional. Two invented competitors, Ravensworth Cabinets and Copperfield Interiors, both reached $30,000,000 of revenue and both held total assets of about $18,000,000.
In the fictional comparison, Ravensworth had retained earnings of $7,200,000 for a ratio of 40%, having paid modest dividends for fifteen years. Copperfield, which distributed nearly all its profits each year and funded its workshop expansion with a term loan, showed retained earnings of $900,000 and a ratio of 5%.
When a construction downturn cut demand by a third, Ravensworth absorbed two loss making years and bought a failing rival cheaply, while Copperfield breached a loan covenant within seven months and was sold at a discount. The illustrative point is not that dividends are wrong, but that the ratio was measuring exactly the capacity to survive that the downturn then tested.
Watch out
Common mistakes.
- Comparing the ratio between companies of very different ages, when a young business will naturally score low simply because it has had fewer years to accumulate profit.
- Reading a low ratio as poor profitability, when a generous dividend policy can hold the ratio down at a company that earns very well.
- Ignoring the effect of revaluing assets upwards, which inflates the denominator and pushes the ratio down without anything changing in the underlying business.
Questions
People also ask.
What counts as a healthy ratio?
There is no universal threshold, but an established business in the 20% to 40% range is generally seen as comfortably self-funded, while a mature company below 10% deserves a closer look.
Why is this ratio used in bankruptcy prediction?
Accumulated profit acts as a cushion, so companies with a thin retained earnings balance have less capacity to absorb losses before their funding structure comes under strain.
Does the ratio work for a company that has just been acquired?
Not well, because acquisition accounting often resets reserves and adds goodwill to total assets, which distorts both parts of the calculation for several years.
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