The SCF collects information on APR for credit cards such as
Visa/MasterCard, Discover, and Sears, but not for charge cards
such as American Express and Diners Club. The sample consists
of the respondents who reported an APR, responding to the
following question: “what interest rate do you pay on the card
where you have the largest balance?” If a respondent did not
carry any balance, the respondent was asked: “what is the
interest rate on the card you got most recently?”