Under normal circumstances, if the loan is not fully repaid or overdrawn, the interest will be calculated from the transaction entry date, with a daily rate of 0.5 ‰. That is to say, if the interest-bearing principal is 10000 yuan, then the daily interest is 5 yuan, and the interest is 150 yuan based on 30 days in a month. If you spend 10000 yuan within the credit line of the credit card, you can enjoy interest-free treatment if you spend it after the bill date of each month and pay it off before the first repayment date after the bill date of next month.

Interest is the use fee of money in a certain period of time, and it refers to the reward that money holders (creditors) get from borrowers (debtors) for lending money or monetary capital. Including deposit interest, loan interest and interest generated by various bonds. Under the capitalist system, the source of interest is the surplus value created by hired workers. The essence of interest is a special transformation form of surplus value and a part of profit.

Abstract interest point refers to the value-added amount brought by monetary funds injected into the real economy and returned. In a less abstract sense, interest generally refers to the remuneration paid by the borrower (debtor) to the lender (creditor) for using the borrowed currency or capital. Also known as the symmetry of sub-fund and parent fund (principal). The calculation formula of interest is: interest = principal × interest rate × deposit period (i.e. time).

Interest is the reward that the fund owner gets for lending the fund, which comes from a part of the profits that the producer makes by using the fund to play its operational functions. Refers to the value-added amount brought by monetary funds injected and returned to the real economy. The calculation formula is: interest = principal × interest rate × deposit period × 100%.

According to the different nature of banking business, it can be divided into bank interest receivable and bank interest payable.

Interest receivable refers to the remuneration that the bank obtains from the borrower by lending to the borrower; It is the price that the borrower must pay for using the funds; It is also part of the bank's profits.

Interest payable refers to the remuneration paid to depositors by banks to absorb their deposits; It is the price that banks must pay to absorb deposits, and it is also part of the cost of banks.

As the occupation cost of an enterprise, interest directly affects the economic benefits of the enterprise. In order to reduce costs and improve efficiency, enterprises should do everything possible to reduce the amount of funds, and at the same time compare the costs of various financing methods in the process of financing. If enterprises in the whole society regard saving interest expenses as a common behavior mode, then the efficiency of economic growth will certainly be improved.