eBay Inc.'s (NASDAQ:EBAY) price-to-earnings (or "P/E") ratio of 10.4x might make it look like a buy right now compared to the market in the United States, where around half of the companies have P/E ratios above 17x and even P/E's above 32x are quite common. Although, it's not wise to just take the P/E at face value as there may be an explanation why it's limited.

Recent times have been pleasing for eBay as its earnings have risen in spite of the market's earnings going into reverse. It might be that many expect the strong earnings performance to degrade substantially, possibly more than the market, which has repressed the P/E. If you like the company, you'd be hoping this isn't the case so that you could potentially pick up some stock while it's out of favour.

Does Growth Match The Low P/E?

The only time you'd be truly comfortable seeing a P/E as low as eBay's is when the company's growth is on track to lag the market.

If we review the last year of earnings growth, the company posted a terrific increase of 334%. The latest three year period has also seen an excellent 37% overall rise in EPS, aided by its short-term performance. Accordingly, shareholders would have probably welcomed those medium-term rates of earnings growth.

Turning to the outlook, the next three years should bring diminished returns, with earnings decreasing 7.5% each year as estimated by the analysts watching the company. With the market predicted to deliver 9.9% growth per annum, that's a disappointing outcome.

In light of this, it's understandable that eBay's P/E would sit below the majority of other companies. However, shrinking earnings are unlikely to lead to a stable P/E over the longer term. There's potential for the P/E to fall to even lower levels if the company doesn't improve its profitability.

The Bottom Line On eBay's P/E

Generally, our preference is to limit the use of the price-to-earnings ratio to establishing what the market thinks about the overall health of a company.

As we suspected, our examination of eBay's analyst forecasts revealed that its outlook for shrinking earnings is contributing to its low P/E. Right now shareholders are accepting the low P/E as they concede future earnings probably won't provide any pleasant surprises. Unless these conditions improve, they will continue to form a barrier for the share price around these levels.

It is also worth noting that we have found 4 warning signs for eBay (1 is potentially serious!) that you need to take into consideration.

If P/E ratios interest you, you may wish to see this free collection of other companies with strong earnings growth and low P/E ratios.

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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.

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