Refers to the tax rate. A single POS machine pays 0.55% and 0.6% of the license, and only pays the profits earned between the company and the agent, as well as different rates set by different operating costs and marketing efforts.

UnionPay stipulates that the standard merchant rate is 0.6, which is a rate to pay the profits of companies, UnionPay and banks. 0.55 is the break-even point of POS service providers. If you can make money without skipping code, 0.55+3 and 0.60 are the rates adopted by most payment companies.

Of course, it does not mean that the higher the rate, the better. As long as it doesn't skip the code, the money earned by the bank will not change regardless of the rate. For pos machines with higher rates, the extra money is earned by payment companies or agents. So it can't be said that the rate is high, the bank earns more, and the machine is good. It can only be said that this kind of POS can guarantee the payment company to make money, and the possibility of price adjustment and code skipping in the later period is small.