PayPal Holdings (NASDAQ:PYPL) cruises into 2016 determined to increase its market share in transaction processing, as well as to become a primary in-store option for retailers seeking to increase interaction with their customers via mobile technology.

Of course, there are bound to be kinks in the path to transaction dominance, as the company moves further away from its business model under former parent eBay Inc. (NASDAQ:EBAY). Earlier this month, we took a look at PayPal's best business category in 2015. Let's follow that assessment, which you can peruse here, with a brief look at the company's worst category this year. To view this category and to understand why it presents a drag on PayPal's business, simply click through the accompanying slideshow below:

Asit Sharma has no position in any stocks mentioned. The Motley Fool owns shares of and recommends eBay and PayPal Holdings. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.