What it means
Capitalisation here means the permanent capital base: long-term debt plus shareholders' equity. Short-term borrowing and trade payables are left out, because the ratio is about how a business funds its long-lived assets rather than its day-to-day working capital.
The result is a cleaner read on structural leverage than a plain debt-to-equity figure gives. The ratio always lands between 0 and 1, which makes it easy to compare across companies.
A firm at 0.20 is funded overwhelmingly by its owners, while one at 0.65 depends on lenders for close to two thirds of its permanent capital. What counts as a sensible level depends heavily on the industry.
Utilities and property companies with steady, predictable cash flows routinely run above 0.50 and their lenders are comfortable with it. A software firm with volatile revenue and few assets to pledge would struggle to sustain half that.
Some analysts include preferred stock in the capitalisation total, and some use total debt rather than only the long-term portion. Neither version is wrong, but comparing a company measured one way against a peer measured the other produces nonsense, so the definition should be stated before the numbers are.
The ratio is a snapshot, so it can be flattered by timing. A business that repays a large tranche just before its year end will look less leveraged than it was for most of the period, which is why averaging opening and closing figures is often the more honest approach.
In practice
Real-world examples.
Example
A regulated water utility reports long-term debt of $900,000,000 and equity of $600,000,000, giving a ratio of 0.60. Its lenders accept the level because customer revenue is predictable and regulated, which would be unthinkable for a business with cyclical sales.
Example
A fashion retailer sees its ratio climb from 0.35 to 0.52 after two loss-making years shrink equity while its borrowing stays flat. Nothing has been borrowed, but the leverage picture has worsened purely because the denominator has fallen.
Example
An analyst comparing two engineering groups finds one at 0.28 and the other at 0.55. The second earns a higher return on equity in good years, but its interest bill leaves far less room to absorb a downturn, which shapes the analyst's recommendation.
Formula
Calculation
Long-Term Debt to Capitalisation = Long-Term Debt / (Long-Term Debt + Shareholders' Equity)
A packaging manufacturer reports long-term debt of $6,800,000 and shareholders' equity of $10,200,000.
Total capitalisation = $6,800,000 + $10,200,000 = $17,000,000
Ratio = $6,800,000 / $17,000,000 = 0.40, or 40%
So 40% of the permanent funding comes from lenders and 60% from the owners.
The company then raises $3,000,000 of new equity and uses $2,000,000 of the proceeds to repay debt.
New long-term debt = $6,800,000 - $2,000,000 = $4,800,000
New shareholders' equity = $10,200,000 + $3,000,000 = $13,200,000
New total capitalisation = $4,800,000 + $13,200,000 = $18,000,000
New ratio = $4,800,000 / $18,000,000 = 0.267, or 26.7%
The capital base has grown by $1,000,000 while the reliance on lenders has fallen by more than thirteen percentage points.Case study
Seen in the real world.
Calderstone Packaging is a fictional manufacturer created to illustrate how this ratio drives real financing decisions. It carried $6,800,000 of long-term debt against $10,200,000 of equity, a ratio of 0.40, and its main lender had set a covenant ceiling of 0.50. A planned $4,000,000 factory extension, funded entirely by new borrowing, would have pushed long-term debt to $10,800,000 and the ratio to $10,800,000 / $21,000,000, or 0.51.
That was one point over the ceiling, so the board looked at a mixed funding package instead. Raising $3,000,000 in fresh equity and borrowing only $1,000,000 gave long-term debt of $7,800,000, equity of $13,200,000 and a ratio of $7,800,000 / $21,000,000, or 0.37.
In this illustrative outcome Calderstone got its extension, kept well inside its covenant and left headroom for future borrowing. The trade-off, which the fictional board debated at length, was that existing shareholders accepted dilution in exchange for a safer capital structure.
Watch out
Common mistakes.
- Including short-term borrowing in the calculation without saying so. The standard measure uses only long-term debt, and mixing in overdrafts makes comparisons with published figures meaningless.
- Judging a ratio without reference to the industry. A level that is routine for a utility would be alarming in a business with unpredictable revenue.
- Forgetting that falling equity raises the ratio. Losses, large dividends or share buybacks can worsen the figure even when not a dollar of new debt has been drawn.
Questions
People also ask.
What is a healthy long-term debt to capitalisation ratio?
Below 0.40 is widely seen as conservative and above 0.60 as aggressive, though asset-heavy regulated sectors comfortably exceed that.
How does it differ from the debt-to-equity ratio?
Debt-to-equity divides debt by equity alone, while this ratio divides long-term debt by debt plus equity, so it is always expressed as a share of total funding.
Should preferred stock be included?
It can be, since it forms part of permanent capital, but the treatment must be applied consistently across every company being compared.
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