Total household debt in the U.S. was $13.512 trillion at the end of 2014 and credit cards accounted for 6.52% or $881.57 billion. The ratio of credit card debt to household debt was highest in 1996 at 10.05%. Card debt is comprised of outstanding receivables tied to general purpose and private label credit accounts. Debt on credit cards is a subset of total consumer credit, which was $3.317 trillion at the end of 2014. Total consumer credit is reported in the Federal Reserve Statistical Release, Z.1, Financial Accounts of the United States, Flow of Funds, Balance Sheets, and Integrated Macr...