The external fund manager backed by Berkshire Hathaway's Charlie Munger, Li Lu, makes no bones about it when he says 'The biggest investment risk is not the volatility of prices, but whether you will suffer a permanent loss of capital.' So it seems the smart money knows that debt - which is usually involved in bankruptcies - is a very important factor, when you assess how risky a company is. We can see that BOC Aviation Limited (HKG:2588) does use debt in its business. But the real question is whether this debt is making the company risky.

Why Does Debt Bring Risk?

Debt assists a business until the business has trouble paying it off, either with new capital or with free cash flow. Ultimately, if the company can't fulfill its legal obligations to repay debt, shareholders could walk away with nothing. However, a more usual (but still expensive) situation is where a company must dilute shareholders at a cheap share price simply to get debt under control. By replacing dilution, though, debt can be an extremely good tool for businesses that need capital to invest in growth at high rates of return. When we examine debt levels, we first consider both cash and debt levels, together.

How Much Debt Does BOC Aviation Carry?

The chart below, which you can click on for greater detail, shows that BOC Aviation had US$16.2b in debt in June 2024; about the same as the year before. However, because it has a cash reserve of US$536.8m, its net debt is less, at about US$15.7b.

A Look At BOC Aviation's Liabilities

Zooming in on the latest balance sheet data, we can see that BOC Aviation had liabilities of US$3.47b due within 12 months and liabilities of US$14.8b due beyond that. Offsetting these obligations, it had cash of US$536.8m as well as receivables valued at US$647.1m due within 12 months. So it has liabilities totalling US$17.0b more than its cash and near-term receivables, combined.

This deficit casts a shadow over the US$5.66b company, like a colossus towering over mere mortals. So we'd watch its balance sheet closely, without a doubt. At the end of the day, BOC Aviation would probably need a major re-capitalization if its creditors were to demand repayment.

We use two main ratios to inform us about debt levels relative to earnings. The first is net debt divided by earnings before interest, tax, depreciation, and amortization (EBITDA), while the second is how many times its earnings before interest and tax (EBIT) covers its interest expense (or its interest cover, for short). This way, we consider both the absolute quantum of the debt, as well as the interest rates paid on it.

Weak interest cover of 2.1 times and a disturbingly high net debt to EBITDA ratio of 14.1 hit our confidence in BOC Aviation like a one-two punch to the gut. The debt burden here is substantial. On the other hand, BOC Aviation grew its EBIT by 26% in the last year. If sustained, this growth should make that debt evaporate like a scarce drinking water during an unnaturally hot summer. The balance sheet is clearly the area to focus on when you are analysing debt. But ultimately the future profitability of the business will decide if BOC Aviation can strengthen its balance sheet over time. So if you want to see what the professionals think, you might find this free report on analyst profit forecasts to be interesting.

Finally, a business needs free cash flow to pay off debt; accounting profits just don't cut it. So the logical step is to look at the proportion of that EBIT that is matched by actual free cash flow. Over the last three years, BOC Aviation recorded negative free cash flow, in total. Debt is far more risky for companies with unreliable free cash flow, so shareholders should be hoping that the past expenditure will produce free cash flow in the future.

Our View

To be frank both BOC Aviation's net debt to EBITDA and its track record of staying on top of its total liabilities make us rather uncomfortable with its debt levels. But at least it's pretty decent at growing its EBIT; that's encouraging. Overall, it seems to us that BOC Aviation's balance sheet is really quite a risk to the business. For this reason we're pretty cautious about the stock, and we think shareholders should keep a close eye on its liquidity. The balance sheet is clearly the area to focus on when you are analysing debt. However, not all investment risk resides within the balance sheet - far from it. To that end, you should learn about the 4 warning signs we've spotted with BOC Aviation (including 2 which are concerning) .

When all is said and done, sometimes its easier to focus on companies that don't even need debt. Readers can access a list of growth stocks with zero net debt 100% free, right now.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.