Your credit card's secret perks

Chances are, you picked your credit card based on the rewards, yet the most valuable perks could be ones you're not even aware of.

Over the past few years, card issuers have upped the ante with better rewards and sign-up bonuses to attract customers. However, there are a few benefits that have been in the fine print all along, including price guarantees, purchase security, extended warranties and return protection — all of which are common for most credit cards.

In fact, four in five credit cards boast at least one of these hidden benefits that could save you money, according to a report by CreditCards.com. And some cards, including Discover it, Chase Freedom and the Barclaycard Arrival Plus World Elite MasterCard, offer all of them.

These incentives aren't advertised because they don't drive most customers to sign up, according to Matt Schulz, senior analyst at CreditCards.com. "Nobody is going to apply for a card to get an extended warranty," he said.

But all together, the potential value can be substantial, Schulz said — even exceeding the benefits you might reap from those highly touted rewards (which customers often don't even redeem).

"An extended warranty is not an inexpensive thing," he added. "If you take advantage of that and return protection, add that up and it can be significant.

"They might not be the sexiest, but the truth is, if you find a card that offers all of these perks, it's something you should know about and take into consideration," Schulz said.

"On the Money" airs on CNBC Saturdays at 5:30 a.m. ET, or check listings for air times in local markets.

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