Starbucks holds billions of dollars in customer deposits without the requirement to provide insurance or allow immediate withdrawals, unlike banks. At the end of the year, Starbucks can categorize a percentage of unused rewards or gift card money as breakage revenue, resulting in significant profit. Starbucks recorded a breakage revenue of 200 million dollars last year and over a billion dollars in the past decade, contributing substantially to their overall revenue, which was around five billion dollars last year.