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.' 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. As with many other companies Pentair plc (NYSE:PNR) makes use of debt. But should shareholders be worried about its use of debt?

Why Does Debt Bring Risk?

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 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. Of course, debt can be an important tool in businesses, particularly capital heavy businesses. The first thing to do when considering how much debt a business uses is to look at its cash and debt together.

What Is Pentair's Debt?

The image below, which you can click on for greater detail, shows that Pentair had debt of US$1.63b at the end of September 2024, a reduction from US$1.99b over a year. However, it does have US$218.1m in cash offsetting this, leading to net debt of about US$1.41b.

How Healthy Is Pentair's Balance Sheet?

According to the last reported balance sheet, Pentair had liabilities of US$928.8m due within 12 months, and liabilities of US$2.05b due beyond 12 months. Offsetting these obligations, it had cash of US$218.1m as well as receivables valued at US$550.6m due within 12 months. So its liabilities outweigh the sum of its cash and (near-term) receivables by US$2.21b.

Since publicly traded Pentair shares are worth a very impressive total of US$16.8b, it seems unlikely that this level of liabilities would be a major threat. However, we do think it is worth keeping an eye on its balance sheet strength, as it may change over time.

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). 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).

With net debt sitting at just 1.4 times EBITDA, Pentair is arguably pretty conservatively geared. And it boasts interest cover of 8.6 times, which is more than adequate. Fortunately, Pentair grew its EBIT by 6.8% in the last year, making that debt load look even more manageable. There's no doubt that we learn most about debt from the balance sheet. But it is future earnings, more than anything, that will determine Pentair'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 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, Pentair produced sturdy free cash flow equating to 64% of its EBIT, about what we'd expect. This cold hard cash means it can reduce its debt when it wants to.

Our View

The good news is that Pentair's demonstrated ability to convert EBIT to free cash flow delights us like a fluffy puppy does a toddler. And the good news does not stop there, as its interest cover also supports that impression! When we consider the range of factors above, it looks like Pentair is pretty sensible with its use of debt. While that brings some risk, it can also enhance returns for shareholders. The balance sheet is clearly the area to focus on when you are analysing debt. However, not all investment risk resides within the balance sheet - far from it. For instance, we've identified 1 warning sign for Pentair that 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.