When the annual interest rate of the loan is 5%, the loan interest calculated by different repayment methods is different.

Repayment methods include: matching principal and interest, average capital, and one-time repayment of principal and interest when due. The final interest generated by these three methods is different, and the applicable situation is also different. Lenders can choose the most suitable repayment method according to their actual situation.

When the annual interest rate of the loan is 5%, if the loan principal is 654.38 million yuan, the loan term is one year.

(1) Repay the principal in equal amount, and the calculation formula is: total interest = (repayment months+1)x loan amount x monthly interest rate /2, so the total interest is 2708.33 yuan, and the repayment amount in the first month is 8750 yuan, which will decrease every month thereafter.

(2) Repay the loan according to the equal principal and interest, and the calculation formula is: total interest = repayment months x monthly repayment amount-loan principal, so the total interest is 2728.98 yuan, and the monthly repayment amount is 8560.75 yuan.

(3) When the principal and interest are repaid at one time, the total interest is: loan principal x annual interest rate x loan term = 100000*5%= 5000 yuan.

Interest rate refers to the ratio of interest amount to deposit principal or loan principal within a certain period. Usually expressed as a percentage. According to the different standards during the measurement period, it is generally divided into annual interest rate, monthly interest rate and daily interest rate.

Annual interest rate: refers to the interest rate of a deposit or loan for one year, that is, the ratio of the annual interest amount to the deposit principal or loan principal, which is mainly used to calculate interest. Different annual interest rates are different. Generally expressed as a percentage of the principal.

Monthly interest rate: refers to the interest rate of a month's deposit or loan. Monthly interest. Generally expressed as a few thousandths of the principal.

Daily interest rate: also known as daily interest rate or daily interest rate, it refers to the ratio of the daily interest amount of deposits and loans to the amount of borrowing money. Generally expressed as a few ten thousandths of the principal.

Interest rate is the main factor that determines the capital cost of enterprises, and it is also the decisive factor for enterprises to raise funds and invest. To study the financial environment, we must pay attention to the current situation and changing trend of interest rates.