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.' It's only natural to consider a company's balance sheet when you examine how risky it is, since debt is often involved when a business collapses. Importantly, WillScot Holdings Corporation (NASDAQ:WSC) does carry debt. But is this debt a concern to shareholders?

When Is Debt Dangerous?

Debt is a tool to help businesses grow, but if a business is incapable of paying off its lenders, then it exists at their mercy. 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. Of course, the upside of debt is that it often represents cheap capital, especially when it replaces dilution in a company with the ability to reinvest 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 WillScot Holdings's Debt?

As you can see below, at the end of June 2024, WillScot Holdings had US$3.35b of debt, up from US$2.96b a year ago. Click the image for more detail. And it doesn't have much cash, so its net debt is about the same.

A Look At WillScot Holdings' Liabilities

We can see from the most recent balance sheet that WillScot Holdings had liabilities of US$631.8m falling due within a year, and liabilities of US$4.22b due beyond that. Offsetting these obligations, it had cash of US$23.0m as well as receivables valued at US$442.2m due within 12 months. So it has liabilities totalling US$4.38b more than its cash and near-term receivables, combined.

This deficit is considerable relative to its market capitalization of US$7.20b, so it does suggest shareholders should keep an eye on WillScot Holdings' use of debt. Should its lenders demand that it shore up the balance sheet, shareholders would likely face severe dilution.

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).

WillScot Holdings's debt is 5.0 times its EBITDA, and its EBIT cover its interest expense 2.6 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 more troubling is the fact that WillScot Holdings actually let its EBIT decrease by 4.3% over the last year. If it keeps going like that paying off its debt will be like running on a treadmill -- a lot of effort for not much advancement. When analysing debt levels, the balance sheet is the obvious place to start. But it is future earnings, more than anything, that will determine WillScot Holdings'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.

Finally, a business needs free cash flow to pay off debt; accounting profits just don't cut it. So we clearly need to look at whether that EBIT is leading to corresponding free cash flow. During the last three years, WillScot Holdings generated free cash flow amounting to a very robust 80% of its EBIT, more than we'd expect. That positions it well to pay down debt if desirable to do so.

Our View

Neither WillScot Holdings's ability handle its debt, based on its EBITDA, nor its interest cover gave us confidence in its ability to take on more debt. But its conversion of EBIT to free cash flow tells a very different story, and suggests some resilience. We think that WillScot Holdings's debt does make it a bit risky, after considering the aforementioned data points together. That's not necessarily a bad thing, since leverage can boost returns on equity, but it is something to be aware of. 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 example WillScot Holdings has 3 warning signs (and 1 which can't be ignored) we think you should know about.

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.