A routing number is a more-than-century old innovation used by the nation’s banking system to efficiently transfer funds from bank to bank. It is a crucial ingredient in how you receive your ...

What Is a Social Security Number (SSN)? The term Social Security number (SSN) refers to a numerical identifier assigned to U.S. citizens and other residents to track income and determine benefits.

A bank identification number (BIN) is the initial set of four to six numbers on a credit card that identifies the lending institution. It helps merchants track transactions.