Jack Henry & Associates, Inc.'s (NASDAQ:JKHY) price-to-earnings (or "P/E") ratio of 31.6x might make it look like a strong sell right now compared to the market in the United States, where around half of the companies have P/E ratios below 18x and even P/E's below 11x are quite common. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the highly elevated P/E.

Recent times have been advantageous for Jack Henry & Associates as its earnings have been rising faster than most other companies. It seems that many are expecting the strong earnings performance to persist, which has raised the P/E. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

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What Are Growth Metrics Telling Us About The High P/E?

Jack Henry & Associates' P/E ratio would be typical for a company that's expected to deliver very strong growth, and importantly, perform much better than the market.

Taking a look back first, we see that the company managed to grow earnings per share by a handy 10% last year. The latest three year period has also seen a 27% overall rise in EPS, aided somewhat by its short-term performance. Accordingly, shareholders would have probably been satisfied with the medium-term rates of earnings growth.

Turning to the outlook, the next three years should generate growth of 9.1% per year as estimated by the analysts watching the company. Meanwhile, the rest of the market is forecast to expand by 11% per year, which is not materially different.

With this information, we find it interesting that Jack Henry & Associates is trading at a high P/E compared to the market. It seems most investors are ignoring the fairly average growth expectations and are willing to pay up for exposure to the stock. Although, additional gains will be difficult to achieve as this level of earnings growth is likely to weigh down the share price eventually.

The Final Word

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.

We've established that Jack Henry & Associates currently trades on a higher than expected P/E since its forecast growth is only in line with the wider market. When we see an average earnings outlook with market-like growth, we suspect the share price is at risk of declining, sending the high P/E lower. This places shareholders' investments at risk and potential investors in danger of paying an unnecessary premium.

It is also worth noting that we have found 1 warning sign for Jack Henry & Associates 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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