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 might be obvious that you need to consider debt, when you think about how risky any given stock is, because too much debt can sink a company. We note that OSI Systems, Inc. (NASDAQ:OSIS) does have debt on its balance sheet. But should shareholders be worried about its use of debt?

What Risk Does Debt Bring?

Generally speaking, debt only becomes a real problem when a company can't easily pay it off, either by raising capital or with its own cash flow. Part and parcel of capitalism is the process of 'creative destruction' where failed businesses are mercilessly liquidated by their bankers. 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. 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. The first thing to do when considering how much debt a business uses is to look at its cash and debt together.

What Is OSI Systems's Debt?

As you can see below, at the end of September 2024, OSI Systems had US$735.3m of debt, up from US$377.9m a year ago. Click the image for more detail. However, it also had US$85.1m in cash, and so its net debt is US$650.2m.

How Strong Is OSI Systems' Balance Sheet?

Zooming in on the latest balance sheet data, we can see that OSI Systems had liabilities of US$712.5m due within 12 months and liabilities of US$614.5m due beyond that. Offsetting these obligations, it had cash of US$85.1m as well as receivables valued at US$687.6m due within 12 months. So its liabilities outweigh the sum of its cash and (near-term) receivables by US$554.4m.

Of course, OSI Systems has a market capitalization of US$3.06b, so these liabilities are probably manageable. Having said that, it's clear that we should continue to monitor its balance sheet, lest it change for the worse.

We measure a company's debt load relative to its earnings power by looking at its net debt divided by its earnings before interest, tax, depreciation, and amortization (EBITDA) and by calculating how easily its earnings before interest and tax (EBIT) cover its interest expense (interest cover). 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).

OSI Systems has a debt to EBITDA ratio of 2.7 and its EBIT covered its interest expense 6.7 times. Taken together this implies that, while we wouldn't want to see debt levels rise, we think it can handle its current leverage. Importantly, OSI Systems grew its EBIT by 35% over the last twelve months, and that growth will make it easier to handle its debt. 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 OSI Systems 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.

But our final consideration is also important, because a company cannot pay debt with paper profits; it needs cold hard cash. So it's worth checking how much of that EBIT is backed by free cash flow. Considering the last three years, OSI Systems actually recorded a cash outflow, overall. Debt is usually more expensive, and almost always more risky in the hands of a company with negative free cash flow. Shareholders ought to hope for an improvement.

Our View

On our analysis OSI Systems's EBIT growth rate should signal that it won't have too much trouble with its debt. But the other factors we noted above weren't so encouraging. In particular, conversion of EBIT to free cash flow gives us cold feet. When we consider all the factors mentioned above, we do feel a bit cautious about OSI Systems's use of debt. While we appreciate debt can enhance returns on equity, we'd suggest that shareholders keep close watch on its debt levels, lest they increase. The balance sheet is clearly the area to focus on when you are analysing debt. But ultimately, every company can contain risks that exist outside of the balance sheet. Case in point: We've spotted 3 warning signs for OSI Systems you should be aware of, and 2 of them are potentially serious.

If, after all that, you're more interested in a fast growing company with a rock-solid balance sheet, then check out our list of net cash growth stocks without delay.

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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.