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.' When we think about how risky a company is, we always like to look at its use of debt, since debt overload can lead to ruin. As with many other companies RTX Corporation (NYSE:RTX) makes use of debt. 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 common (but still painful) scenario is that it has to raise new equity capital at a low price, thus permanently diluting shareholders. Having said that, the most common situation is where a company manages its debt reasonably well - and to its own advantage. When we examine debt levels, we first consider both cash and debt levels, together.

What Is RTX's Debt?

You can click the graphic below for the historical numbers, but it shows that as of June 2024 RTX had US$42.1b of debt, an increase on US$35.4b, over one year. On the flip side, it has US$6.01b in cash leading to net debt of about US$36.0b.

How Healthy Is RTX's Balance Sheet?

The latest balance sheet data shows that RTX had liabilities of US$49.6b due within a year, and liabilities of US$50.9b falling due after that. On the other hand, it had cash of US$6.01b and US$23.8b worth of receivables due within a year. So its liabilities total US$70.6b more than the combination of its cash and short-term receivables.

While this might seem like a lot, it is not so bad since RTX has a huge market capitalization of US$160.7b, and so it could probably strengthen its balance sheet by raising capital if it needed to. But we definitely want to keep our eyes open to indications that its debt is bringing too much risk.

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).

RTX's debt is 3.9 times its EBITDA, and its EBIT cover its interest expense 2.8 times over. Taken together this implies that, while we wouldn't want to see debt levels rise, we think it can handle its current leverage. Even worse, RTX saw its EBIT tank 39% over the last 12 months. If earnings keep going like that over the long term, it has a snowball's chance in hell of paying off that debt. There's no doubt that we learn most about debt from the balance sheet. But ultimately the future profitability of the business will decide if RTX can strengthen its balance sheet over time. So if you're focused on the future you can check out this free report showing analyst profit forecasts.

Finally, a business needs free cash flow to pay off debt; accounting profits just don't cut it. So it's worth checking how much of that EBIT is backed by free cash flow. Over the most recent three years, RTX recorded free cash flow worth 72% of its EBIT, which is around normal, given free cash flow excludes interest and tax. This cold hard cash means it can reduce its debt when it wants to.

Our View

RTX's struggle to grow its EBIT had us second guessing its balance sheet strength, but the other data-points we considered were relatively redeeming. In particular, its conversion of EBIT to free cash flow was re-invigorating. When we consider all the factors discussed, it seems to us that RTX is taking some risks with its use of debt. While that debt can boost returns, we think the company has enough leverage now. 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. For example RTX has 4 warning signs (and 1 which shouldn't be ignored) we think you should know about.

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.