The two leading credit card companies in the world today are the competitors Visa and MasterCard. They both operate along very similar lines. While Visa can claim to have almost a billion cards issued, MasterCard has over twenty five thousand banks issuing its cards and it is difficult to find any difference in the number of locations worldwide that accept the cards, which is now estimated at over twenty million.
In fact, as far as most consumers are concerned, there is no real difference between the two. They are both very widely accepted in over one hundred and fifty countries and it is very rare to find a location that will accept one but not the other.