Private label and general purpose credit, debit, and prepaid cards issued in the United States generated $6.361 trillion in payments for goods and services in 2017, up 7.2% over 2016. Merchants paid $96.67 billion in processing fees to accept those payments, up $8.28 billion over 2016. American Express, Discover, Mastercard, and Visa general purpose credit cards and store, gasoline, medical, etc. private label credit cards accounted for a combined $3.633 trillion in purchase volume. Credit cards accounted for 57.1% of all card purchase volume including debit and prepaid spending for goods a...