Targeting the most profitable small-business customers is a maxim among bankers, but a recent study said the tactic is only a short-term solution.

"It's not really a winning strategy," said Terri Austerberry, a McKinsey & Co. senior consultant who worked on the study with the Bank Administration Institute.

Limited Time Offer

Save $400 off your subscription. Special offer ends April 30, 2017.

14-Day Free Trial

No credit card required. Complete access to articles, breaking news and industry data.