8 Reasons Why Credit Cards are Declined With an increased dependency on credit cards, it is important to know how things work so you don’t face an embarrassing situation. Here are a few reasons why your credit card can be declined and what you can do to avoid it. Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on WhatsApp (Opens in new window)