A little back-of-the-envelope math: Wal-Mart: $482B in revenue (2016, projected), if they're paying ~3% on average for interchange/credit card fees, that's $14

A little back-of-the-envelope math: Wal-Mart: $482B in revenue (2016, projected), if they're paying ~3% on average for interchange/credit card fees, that's $14.5B they could have saved last year. Target: $74B, $2.2B they could saved. CVS: $153B revenue (2016, projected), $4.6B in savings. That's a pretty easy sell. Those are tremendous amounts of money they're "spending" that they'd love to ditch. Granted they get a lot for that (credit card companies take on a lot of risk), but if they could shave those numbers down, that's a lot of pure profit they could get.