Bank of America risks losing its near-free checking deposits if cash agents move idle balances out between paydays. If software forecasts bills and refills checking before they're due, a fat cushion at the bank stops making sense; the bank keeps the customer but loses the cheap deposit. BAC averaged $957B of consumer deposits last quarter, 59% in checking, and paying more to keep cash hurts the spread. Broader transfer authority would speed outflows; for now, watch deposit costs. x.comÂ