Credit card costs are based on the type of business, type of card presented, how it was submitted and how your machine or gateway read that information. All of these are factors to the final rate that you are being charged to process. Any merchant vendor can quote a base rate tied to the interchange that sounds attractive but what you end up paying is entirely dependent on other factors, some of which are outside of your control. To understand what your rate is and what options you have it’s important to see how current transactions are being charged.