Rebecca Lake is a certified educator in personal finance (CEPF) and a banking expert. She's been writing about personal finance since 2014, and her work has appeared in numerous publications online.

A unique number assigned to users that identifies them to the entity establishing a relationship of some kind. A bank account number and credit card number are common examples. An account number can ...

Any time you transfer money into or out of an account, you’ll need to provide the account number, among other information. What is an account number? It’s the unique identifying string of numbers ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Toby Walters is a financial writer, investor, and lifelong learner. He has a passion for ...