Originally Posted by
alexmt
Yes, the rate should be identical. Also Visa vs Mastercard will be slightly different, and Amex will be quite different but it won't always work out in the favour of any particular network. They determine their rates a bit differently.
I am gonna do a comparison, I will use my CSP, Chase United Club, IHG MC, AMEX Plat, and Discover It, to each purchase one item at a Starbucks, which doesn't have DCC for all cards. Then let's see which card has the lowest rate.
I understand they use different rates. But I am curious to know whether it's possible that, at one time, say, Visa rate is better than MC rate, and several days later, Visa rate fluctuates to a position worse than MC rate?