Following are the top debit card issuers in the United States ranked by purchase volume. Wells Fargo is the largest issuer of Visa debit cards in the U.S. As of June 10, 2016, the company had a market cap of over $245 billion.

  Visa Purchase Volume, US$b, 2014
1 Wells Fargo 161
2 Bank of America 155
3 JP Morgan Chase 119
4 US Bank 38
5 PNC Bank 37
  MasterCard   Purchase Volume, US$b, 2014
1 USAA 26
2 Fifth Third Bank 20
3 Sun Trust 19
4 Capital One 19
5 Citibank 19
  Signature Purchase Volume, US$b, 2014
1 Bank of America 164
2 Wells Fargo 158
3 JP Morgan Chase 119
4 PNC Bank 37
5 US Bank 34
  PIN Purchase Volume, US$b, 2014
1 Bank of America 114
2 Wells Fargo 106
3 JP Morgan Chase 63
4 PNC Bank 19
5 USAA 17