Knowing how credit cards work can save you headaches and cash. In a nutshell, credit cards provide access to a revolving line of credit that allows you to make purchases that can be paid off later.

As Congress and the White House examine consumer protection rules for the banking industry, merchants hope they'll also look into another aspect of the card game -- the increasing fees retailers are ...

When a merchant accepts credit card payments, it pays an interchange fee charged by the credit card company to process each card transaction. Interchange fees can chip away at a merchant’s bottom line ...

Two sets of bills in the Texas Legislature regulating credit card interchange fees have brought together an unlikely coalition of skeptics, including JPMorgan Chase CEO Jamie Dimon. Nam Y. Huh / AP ...