Despite Power Integrations, Inc.'s (NASDAQ:POWI) recent earnings report having lackluster headline numbers, the market responded positively. Sometimes, shareholders are willing to ignore soft numbers with the hope that they will improve, but our analysis suggests this is unlikely for Power Integrations.

An Unusual Tax Situation

We can see that Power Integrations received a tax benefit of US$9.8m. This is meaningful because companies usually pay tax rather than receive tax benefits. 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.

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.

Our Take On Power Integrations' Profit Performance

Power Integrations reported that it received a tax benefit, rather than paid tax, in its last report. As a result we don't think its profit result, which includes that tax-boost, is a good guide to its sustainable profit levels. Therefore, it seems possible to us that Power Integrations' true underlying earnings power is actually less than its statutory profit. Sadly, its EPS was down over the last twelve months. At the end of the day, it's essential to consider more than just the factors above, if you want to understand the company properly. With this in mind, we wouldn't consider investing in a stock unless we had a thorough understanding of the risks. Every company has risks, and we've spotted 2 warning signs for Power Integrations you should know about.

This note has only looked at a single factor that sheds light on the nature of Power Integrations' profit. But there are plenty of other ways to inform your opinion of a company. Some people consider a high return on equity to be a good sign of a quality business. So you may wish to see this free collection of companies boasting high return on equity, or this list of stocks that insiders are buying.

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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.