The market for FMC Corporation's (NYSE:FMC) stock was strong after it released a healthy earnings report last week. However, we think that shareholders should be cautious as we found some worrying factors underlying the profit.

See our latest analysis for FMC

earnings-and-revenue-historyHow Do Unusual Items Influence Profit?

To properly understand FMC's profit results, we need to consider the US$182m expense attributed to unusual items. While deductions due to unusual items are disappointing in the first instance, there is a silver lining. We looked at thousands of listed companies and found that unusual items are very often one-off in nature. And, after all, that's exactly what the accounting terminology implies. If FMC doesn't see those unusual expenses repeat, then all else being equal we'd expect its profit to increase over the coming year.

That might leave you wondering what analysts are forecasting in terms of future profitability. Luckily, you can click here to see an interactive graph depicting future profitability, based on their estimates.

An Unusual Tax Situation

Having already discussed the impact of the unusual items, we should also note that FMC received a tax benefit of US$1.5b. It's always a bit noteworthy when a company is paid by the tax man, rather than paying the tax man. The receipt of a tax benefit is obviously a good thing, on its own. However, the devil in the detail is that these kind of benefits only impact in the year they are booked, and are often one-off in nature. Assuming the tax benefit is not repeated every year, we could see its profitability drop noticeably, all else being equal. So while we think it's great to receive a tax benefit, it does tend to imply an increased risk that the statutory profit overstates the sustainable earnings power of the business.

Our Take On FMC's Profit Performance

In the last year FMC received a tax benefit, which boosted its profit in a way that might not be much more sustainable than turning prime farmland into gas fields. Having said that, it also had a unusual item reducing its profit. Based on these factors, we think it's very unlikely that FMC's statutory profits make it seem much weaker than it is. In light of this, if you'd like to do more analysis on the company, it's vital to be informed of the risks involved. Every company has risks, and we've spotted 3 warning signs for FMC (of which 2 shouldn't be ignored!) you should know about.

In this article we've looked at a number of factors that can impair the utility of profit numbers, as a guide to a business. But there are plenty of other ways to inform your opinion of a company. For example, many people consider a high return on equity as an indication of favorable business economics, while others like to 'follow the money' and search out stocks that insiders are buying. While it might take a little research on your behalf, you may find this free collection of companies boasting high return on equity, or this list of stocks with significant insider holdings to be useful.

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team (at) simplywallst.com.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.