The increase partially can be attributed to the rise of cards that dole out the perks for high monthly spending, Schulz said. Several rewards cards require you spend $3,000 or more in the first three months to qualify for bonuses.

Cardholders aren’t just charging the small stuff. CreditCards.com found that nearly 60 percent preferred plastic to buy things totaling over $500, compared with 24 percent who swipe a debit card, 10 percent who pay with cash and 8 percent who write a check.

On average, Americans make about five purchases of more than $500 each year. Schulz recommends that people with good credit, a score of 720 or above, should consider opening rewards card to make a major buy. “Once you use the card for the purchase, pay off the balance in full and collect the rewards,” he said.

Millennials were the generation most likely to use credit cards for small purchases, according to CreditCards.com. About 21 percent of young people charged things for less than $5 compared with 16 percent for Generation X and 12 percent for baby boomers.

But don’t expect millennials to go completely cashless anytime soon. Eighty percent of millennials still primarily use cash and they are four times more likely to pay with greenbacks than mobile payment apps like Apple Pay and Venmo, according to a recent survey by Accel and Qualtrics.

“Mobile payment platforms aren’t exactly catching on,” said Mike Maughan, head of brand growth and global insights at survey software firm Qualtrics.