Square Takes Aim at JPMorgan With Checking, Savings Accounts (2)

Square Inc., whose technology has already upended the way small businesses take card payments, is quietly preparing to offer checking and savings accounts to those customers, taking direct aim at behemoths such as JPMorgan Chase & Co. Square’s shares jumped on the news.

Evidence of the still-unannounced plan appeared in hidden code in a recent update to Square’s app for Apple Inc.’s iPhone and iPad. The code references both types of accounts and indicates that the checking version will integrate with Square’s existing debit card for businesses. It also suggests that Square will differentiate itself by eschewing monthly service ...