Is Marathon Petroleum (NYSE:MPC) Using Too Much Debt?

Howard Marks put it nicely when he said that, rather than worrying about share price volatility, 'The possibility of permanent loss is the risk I worry about... and every practical investor I know worries about.' 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. We can see that Marathon Petroleum Corporation (NYSE:MPC) 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. Part and parcel of capitalism is the process of 'creative destruction' where failed businesses are mercilessly liquidated by their bankers. 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, plenty of companies use debt to fund growth, without any negative consequences. The first step when considering a company's debt levels is to consider its cash and debt together.

Check out our latest analysis for Marathon Petroleum

How Much Debt Does Marathon Petroleum Carry?

The image below, which you can click on for greater detail, shows that at June 2024 Marathon Petroleum had debt of US$28.5b, up from US$26.8b in one year. However, because it has a cash reserve of US$8.50b, its net debt is less, at about US$20.0b.

How Healthy Is Marathon Petroleum's Balance Sheet?

Zooming in on the latest balance sheet data, we can see that Marathon Petroleum had liabilities of US$24.0b due within 12 months and liabilities of US$33.1b due beyond that. Offsetting these obligations, it had cash of US$8.50b as well as receivables valued at US$12.3b due within 12 months. So it has liabilities totalling US$36.3b more than its cash and near-term receivables, combined.

This deficit is considerable relative to its very significant market capitalization of US$53.0b, so it does suggest shareholders should keep an eye on Marathon Petroleum's use of debt. Should its lenders demand that it shore up the balance sheet, shareholders would likely face severe 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). 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).

Marathon Petroleum's net debt is only 1.5 times its EBITDA. And its EBIT covers its interest expense a whopping 12.9 times over. So you could argue it is no more threatened by its debt than an elephant is by a mouse. The modesty of its debt load may become crucial for Marathon Petroleum if management cannot prevent a repeat of the 40% cut to EBIT over the last year. Falling earnings (if the trend continues) could eventually make even modest debt quite risky. When analysing debt levels, the balance sheet is the obvious place to start. But it is future earnings, more than anything, that will determine Marathon Petroleum's ability to maintain a healthy balance sheet going forward. 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 business needs free cash flow to pay off debt; accounting profits just don't cut it. So it's worth checking how much of that EBIT is backed by free cash flow. Over the most recent three years, Marathon Petroleum recorded free cash flow worth 79% of its EBIT, which is around normal, given free cash flow excludes interest and tax. This free cash flow puts the company in a good position to pay down debt, when appropriate.

Our View

Marathon Petroleum's EBIT growth rate was a real negative on this analysis, although the other factors we considered were considerably better. There's no doubt that its ability to to cover its interest expense with its EBIT is pretty flash. When we consider all the factors mentioned above, we do feel a bit cautious about Marathon Petroleum's use of debt. While we appreciate debt can enhance returns on equity, we'd suggest that shareholders keep close watch on its debt levels, lest they increase. When analysing debt levels, the balance sheet is the obvious place to start. However, not all investment risk resides within the balance sheet - far from it. For example, we've discovered 3 warning signs for Marathon Petroleum (1 is a bit concerning!) that you should be aware of before investing here.

At the end of the day, it's often better to focus on companies that are free from net debt. You can access our special list of such companies (all with a track record of profit growth). It's free.

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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.