First, the loan interest is calculated according to the floating interest rate. After the adjustment of the bank loan interest rate, the interest rate calculated according to the loan interest rate is also adjusted accordingly. Of course, no matter how it is calculated, it has no effect on the interest paid. Will have an impact on the adjusted interest. After the adjustment of the general bank interest rate, the interest rate of the outstanding part of the loan is also adjusted. There are three forms: first, after the bank's interest rate is adjusted, the newly adjusted interest rate will be implemented at the beginning of the following year (ICBC, Agricultural Bank of China and China Construction Bank are all like this); The second is annual adjustment, that is, the new interest rate is adjusted and implemented every year of repayment (such is the case with China bank mortgage); Third, the two sides agreed that the new interest rate level will be implemented one month after the adjustment of bank interest rates.

Second, the fixed interest rate is stipulated by the state, which is an interest rate that is not affected by the average social profit rate and the change of capital supply and demand in a certain period of time. The interest rate stipulated in the loan contract remains unchanged throughout the loan period. In the loan business for more than one year, the loan contract often stipulates an interest rate standard agreed by the borrower and the borrower to calculate interest, which is called the loan fixed interest rate. For example, international medium-and long-term export credit calculates interest on the withdrawn money or the loan balance during the whole loan period according to the unified interest rate stipulated by the Organization for Economic Cooperation and Development when signing the contract.

Third, the floating interest rate is an interest rate that can be adjusted regularly during the loan period. Common basic interest rate plus calculation. Usually, the loan interest rate or commercial paper interest rate of the most reputable enterprises in the market is set as the basic interest rate, and on this basis, 0.5 to 2 percentage points are added as the floating interest rate. Repay the principal at face value at maturity, and usually pay interest at the floating rate of the specified interest payment period.

4. Interest rates that fluctuate within a certain range around the benchmark interest rates set by banks and other financial institutions. Above the benchmark interest rate and below the highest range (including the highest range), the interest rate is said to be floating up, below the benchmark interest rate and above the lowest range (including the lowest range), and the interest rate is said to be floating down.