Legendary fund manager Li Lu (who Charlie Munger backed) once said, '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 can see that IS DongSeo Co., Ltd. (KRX:010780) does use debt in its business. But is this debt a concern to shareholders?
When Is Debt Dangerous?
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, plenty of companies use debt to fund growth, without any negative consequences. When we think about a company's use of debt, we first look at cash and debt together.
How Much Debt Does IS DongSeo Carry?
As you can see below, IS DongSeo had ₩1.40t of debt at March 2025, down from ₩1.49t a year prior. However, it also had ₩369.3b in cash, and so its net debt is ₩1.03t.
A Look At IS DongSeo's Liabilities
Zooming in on the latest balance sheet data, we can see that IS DongSeo had liabilities of ₩1.55t due within 12 months and liabilities of ₩481.0b due beyond that. On the other hand, it had cash of ₩369.3b and ₩317.9b worth of receivables due within a year. So it has liabilities totalling ₩1.34t more than its cash and near-term receivables, combined.
The deficiency here weighs heavily on the ₩634.6b company itself, as if a child were struggling under the weight of an enormous back-pack full of books, his sports gear, and a trumpet. So we'd watch its balance sheet closely, without a doubt. After all, IS DongSeo would likely require a major re-capitalisation if it had to pay its creditors today.
Check out our latest analysis for IS DongSeo
In order to size up a company's debt relative to its earnings, we calculate its net debt divided by its earnings before interest, tax, depreciation, and amortization (EBITDA) and its earnings before interest and tax (EBIT) divided by its interest expense (its 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 1.2 times and a disturbingly high net debt to EBITDA ratio of 6.0 hit our confidence in IS DongSeo like a one-two punch to the gut. This means we'd consider it to have a heavy debt load. Worse, IS DongSeo's EBIT was down 64% over the last year. If earnings continue to follow that trajectory, paying off that debt load will be harder than convincing us to run a marathon in the rain. The balance sheet is clearly the area to focus on when you are analysing debt. But it is future earnings, more than anything, that will determine IS DongSeo's ability to maintain a healthy balance sheet going forward. So if you're focused on the future you can check out this free report showing analyst profit forecasts.
But our final consideration is also important, because a company cannot pay debt with paper profits; it needs cold hard cash. So we clearly need to look at whether that EBIT is leading to corresponding free cash flow. Over the last three years, IS DongSeo reported free cash flow worth 16% of its EBIT, which is really quite low. For us, cash conversion that low sparks a little paranoia about is ability to extinguish debt.

Our View
On the face of it, IS DongSeo's EBIT growth rate left us tentative about the stock, and its level of total liabilities was no more enticing than the one empty restaurant on the busiest night of the year. And even its net debt to EBITDA fails to inspire much confidence. Considering all the factors previously mentioned, we think that IS DongSeo really is carrying too much debt. To our minds, that means the stock is rather high risk, and probably one to avoid; but to each their own (investing) style. 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 - IS DongSeo has 2 warning signs we think you should be aware of.
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.
About KOSE:A010780
IS DongSeo
Engages in the construction and construction materials businesses in South Korea.
Fair value with moderate growth potential.
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