<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by MileKing:
The various estimates that have been given in past threads have varied from 0.9 cents for very large purchasers to 1.5 cents for significant but less large purchasers.</font>
I'd have to guess it's a lot less. My wife pays 1.65% + 10 cents a transaction for Visa and MC transactions for her small business. Guessing that larger companies with significant CC transactions pay less than that, it wouldn't leave much for the credit card companies.