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. As with many other companies ALS Limited (ASX:ALQ) makes use of debt. But should shareholders be worried about its use of debt?
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. 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. The first thing to do when considering how much debt a business uses is to look at its cash and debt together.
You can click the graphic below for the historical numbers, but it shows that ALS had AU$1.36b of debt in September 2025, down from AU$1.64b, one year before. However, it does have AU$211.2m in cash offsetting this, leading to net debt of about AU$1.15b.
The latest balance sheet data shows that ALS had liabilities of AU$723.1m due within a year, and liabilities of AU$1.70b falling due after that. On the other hand, it had cash of AU$211.2m and AU$640.6m worth of receivables due within a year. So it has liabilities totalling AU$1.57b more than its cash and near-term receivables, combined.
Given ALS has a market capitalization of AU$11.3b, it's hard to believe these liabilities pose much threat. However, we do think it is worth keeping an eye on its balance sheet strength, as it may change over time.
Check out our latest analysis for ALS
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). This way, we consider both the absolute quantum of the debt, as well as the interest rates paid on it.
ALS's net debt is sitting at a very reasonable 1.7 times its EBITDA, while its EBIT covered its interest expense just 6.5 times last year. While that doesn't worry us too much, it does suggest the interest payments are somewhat of a burden. If ALS can keep growing EBIT at last year's rate of 11% over the last year, then it will find its debt load easier to manage. 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 ALS 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. Looking at the most recent three years, ALS recorded free cash flow of 46% of its EBIT, which is weaker than we'd expect. That's not great, when it comes to paying down debt.
ALS's EBIT growth rate was a real positive on this analysis, as was its interest cover. Having said that, its conversion of EBIT to free cash flow somewhat sensitizes us to potential future risks to the balance sheet. Considering this range of data points, we think ALS is in a good position to manage its debt levels. But a word of caution: we think debt levels are high enough to justify ongoing monitoring. 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 1 warning sign for ALS that you should be aware of.
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.