Donna DeCarolis, Ph.D., associate dean of strategic initiatives at Drexel University’s LeBow College of Business, said credit cards have been the most popular option for small businesses. But two-thirds of small business owners have reported major rate increases and 41 percent said their credit lines were reduced in the past year, according to a recent study from the National Small Business Association. A Federal Reserve study shows that 41 percent of banks tightened credit in the past year and 70 percent raised interest on credit loans. “These [small businesses] are angry,” DeCarolis said. “They are good customers who pay their minimum balance. But the other side of things is that Advanta needs to stay afloat.”