Do you track your purchases? It may be a bit alarming to see how much they add up to, but it’s an important habit to develop. An account with a bank or financial provider gives you an official record of every purchase you make using funds from that account, as well as money you receive and deposit. That can come in handy when you’re creating a budget, preparing for taxes, or need proof of payment. Each month you’ll get a statement that tallies every purchase you’ve made.