Lee talks about a solution that has worked well for her and her ex-husband for managing kids expenses jointly in a simple, transparent and very hands-off method. The idea with the shared bank account is that both parties contribute to it each month and both have access to all the transactions so there is complete transparency. They work together to determine when they need to add more to the account if expenses for the kids increase for certain unexpected expenses. There is no need to save receipts, chase each other down for re-payment or constant back and forth about who paid for what.