The credit card processing fee for merchants is as follows:

For first-class merchants (such as catering, entertainment, jewelry, and handicrafts), the fee is between 2 and 2.5. The handling fee rate for second-category merchants (such as wholesale merchants, car sales merchants, and real estate merchants) is approximately 1. The handling fee rates for the three types of merchants (such as supermarkets, gas stations, and airline ticket sales) range from 0.5 to 1. The handling fee rates for the four types of merchants (such as public schools and public hospitals) vary from region to region, and the specific rates are determined according to the regulations of each region. The handling fee rates for the five types of merchants (general merchants) are approximately between 1 and 3.