Smith said the largest U.S. bank is being "surgical" in determining where to tighten credit standards but he added that lenders industrywide ought to be leaning toward stricter credit card lending standards rather than looser ones.

JPMorgan's earnings have shown rising sales volumes as well as weakening credit trends in its credit card business, consistent with other lenders. A recent investor presentation by the bank said Chase Card has only modest exposure to credit card borrowers with FICO scores lower than 660.

A Fitch Ratings report last month said credit card loss rates, which have already been climbing, are likely to rise for several more quarters as loan growth has increased, driven partly by lower credit standards.

Smith said Tuesday rising losses should be no cause for alarm, but are to be expected after an extended period of historically low loss rates.

"I've called this now actually for almost two years so that nobody would be surprised," he said. However, he added, "people still seem to be surprised that we are at the end of that cycle."

(Reporting by Dan Freed; editing by David Gregorio)

By Dan Freed