According to Phan, these users load or reload around $10 billion of value onto their cards each year. Turning the coffee shop into a bank is that not all of it gets spent at once. As at the end of March, $1.9 billion of stored card value sat on the company’s balance sheet waiting to be spent – kind of like customer deposits. To give that some context, 85% of US banks have less than $1 billion in assets.