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 Tongyu Heavy Industry Co., Ltd. (SZSE:300185) does use debt in its business. But is this debt a concern to shareholders?

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. In the worst case scenario, a company can go bankrupt if it cannot pay its creditors. However, a more frequent (but still costly) occurrence is where a company must issue shares at bargain-basement prices, permanently diluting shareholders, just to shore up its balance sheet. 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 step when considering a company's debt levels is to consider its cash and debt together.

What Is Tongyu Heavy Industry's Debt?

As you can see below, Tongyu Heavy Industry had CN¥6.05b of debt at March 2024, down from CN¥6.48b a year prior. On the flip side, it has CN¥1.43b in cash leading to net debt of about CN¥4.62b.

How Strong Is Tongyu Heavy Industry's Balance Sheet?

Zooming in on the latest balance sheet data, we can see that Tongyu Heavy Industry had liabilities of CN¥6.29b due within 12 months and liabilities of CN¥2.07b due beyond that. On the other hand, it had cash of CN¥1.43b and CN¥2.85b worth of receivables due within a year. So its liabilities total CN¥4.07b more than the combination of its cash and short-term receivables.

This deficit isn't so bad because Tongyu Heavy Industry is worth CN¥6.90b, and thus could probably raise enough capital to shore up its balance sheet, if the need arose. But it's clear that we should definitely closely examine whether it can manage its debt without dilution.

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). This way, we consider both the absolute quantum of the debt, as well as the interest rates paid on it.

Weak interest cover of 2.2 times and a disturbingly high net debt to EBITDA ratio of 6.4 hit our confidence in Tongyu Heavy Industry like a one-two punch to the gut. The debt burden here is substantial. Worse, Tongyu Heavy Industry's EBIT was down 34% over the last year. If earnings keep going like that over the long term, it has a snowball's chance in hell of paying off that debt. When analysing debt levels, the balance sheet is the obvious place to start. But ultimately the future profitability of the business will decide if Tongyu Heavy Industry 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 company can only pay off debt with cold hard cash, not accounting profits. So the logical step is to look at the proportion of that EBIT that is matched by actual free cash flow. During the last three years, Tongyu Heavy Industry burned a lot of cash. While investors are no doubt expecting a reversal of that situation in due course, it clearly does mean its use of debt is more risky.

Our View

To be frank both Tongyu Heavy Industry's conversion of EBIT to free cash flow and its track record of (not) growing its EBIT make us rather uncomfortable with its debt levels. And furthermore, its interest cover also fails to instill confidence. Taking into account all the aforementioned factors, it looks like Tongyu Heavy Industry has too much debt. That sort of riskiness is ok for some, but it certainly doesn't float our boat. There's no doubt that we learn most about debt from the balance sheet. But ultimately, every company can contain risks that exist outside of the balance sheet. Case in point: We've spotted 3 warning signs for Tongyu Heavy Industry you should be aware of, and 1 of them shouldn't be ignored.

If you're interested in investing in businesses that can grow profits without the burden of debt, then check out this free list of growing businesses that have net cash on the balance sheet.

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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.