Generally speaking, companies that introduce insurance (such as sales offices and banks) have certain "points" and "rebates". Compared with these two companies, the sales office is definitely more expensive and the bank is cheaper, but the insurance purpose mentioned is the same, and it can also "refund the mortgage insurance".

This knowledge is introduced as follows:

1. The insurance premium rate of commercial mortgage loans is generally 0.3 ‰-0.5 ‰ per 10,000 yuan (local regulations are slightly different).

2. Calculation formula of loan insurance premium (when the rate is 0.4‰): loan amount *0.4‰* loan term.

For example, Mr. Wang borrows 300,000 yuan for 20 years, so: 300,000 * 0.4 ‰ * 20 = 2,400 yuan.

3. The insurance premium can be refunded (that is, "returning the mortgage insurance" as you said). For example, Mr. Wang's original repayment period was 20 years. In the ninth year, he made a one-time repayment in advance and settled the bank loan. At this time, the insurance premium can be refunded according to the actual repayment period. The calculation formula is as follows:

300,000 * 0.4 ‰ * (20-9) =1320 yuan.