Howard Marks put it nicely when he said that, rather than worrying about share price volatility, 'The possibility of permanent loss is the risk I worry about... and every practical investor I know worries about.' It's only natural to consider a company's balance sheet when you examine how risky it is, since debt is often involved when a business collapses. We note that Iridium Communications Inc. (NASDAQ:IRDM) does have debt on its balance sheet. But is this debt a concern to shareholders?

Why Does Debt Bring Risk?

Debt and other liabilities become risky for a business when it cannot easily fulfill those obligations, either with free cash flow or by raising capital at an attractive price. In the worst case scenario, a company can go bankrupt if it cannot pay its creditors. While that is not too common, we often do see indebted companies permanently diluting shareholders because lenders force them to raise capital at a distressed price. Of course, the upside of debt is that it often represents cheap capital, especially when it replaces dilution in a company with the ability to reinvest at high rates of return. When we think about a company's use of debt, we first look at cash and debt together.

What Is Iridium Communications's Debt?

The chart below, which you can click on for greater detail, shows that Iridium Communications had US$1.48b in debt in December 2023; about the same as the year before. On the flip side, it has US$71.9m in cash leading to net debt of about US$1.41b.

A Look At Iridium Communications' Liabilities

We can see from the most recent balance sheet that Iridium Communications had liabilities of US$131.6m falling due within a year, and liabilities of US$1.64b due beyond that. Offsetting this, it had US$71.9m in cash and US$91.7m in receivables that were due within 12 months. So it has liabilities totalling US$1.61b more than its cash and near-term receivables, combined.

While this might seem like a lot, it is not so bad since Iridium Communications has a market capitalization of US$3.16b, and so it could probably strengthen its balance sheet by raising capital if it needed to. However, it is still worthwhile taking a close look at its ability to pay off debt.

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). The advantage of this approach is that we take into account both the absolute quantum of debt (with net debt to EBITDA) and the actual interest expenses associated with that debt (with its interest cover ratio).

While we wouldn't worry about Iridium Communications's net debt to EBITDA ratio of 3.5, we think its super-low interest cover of 1.3 times is a sign of high leverage. In large part that's due to the company's significant depreciation and amortisation charges, which arguably mean its EBITDA is a very generous measure of earnings, and its debt may be more of a burden than it first appears. So shareholders should probably be aware that interest expenses appear to have really impacted the business lately. Looking on the bright side, Iridium Communications boosted its EBIT by a silky 55% in the last year. Like a mother's loving embrace of a newborn that sort of growth builds resilience, putting the company in a stronger position to manage its debt. There's no doubt that we learn most about debt from the balance sheet. But it is future earnings, more than anything, that will determine Iridium Communications's ability to maintain a healthy balance sheet going forward. 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 company can only pay off debt with cold hard cash, not accounting profits. So we clearly need to look at whether that EBIT is leading to corresponding free cash flow. Over the last three years, Iridium Communications actually produced more free cash flow than EBIT. That sort of strong cash generation warms our hearts like a puppy in a bumblebee suit.

Our View

Both Iridium Communications's ability to to convert EBIT to free cash flow and its EBIT growth rate gave us comfort that it can handle its debt. In contrast, our confidence was undermined by its apparent struggle to cover its interest expense with its EBIT. When we consider all the elements mentioned above, it seems to us that Iridium Communications is managing its debt quite well. Having said that, the load is sufficiently heavy that we would recommend any shareholders keep a close eye on it. There's no doubt that we learn most about debt from the balance sheet. However, not all investment risk resides within the balance sheet - far from it. For instance, we've identified 3 warning signs for Iridium Communications (1 is a bit unpleasant) you should be aware of.

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.