I. Calculation formula of equal principal and interest:
Matching principal and interest method: the calculation formula is monthly repayment amount = principal * monthly interest rate *[( 1+ monthly interest rate) n/[( 1+ monthly interest rate) n- 1]. Where n represents the number of months of loan, and n represents the power of n, such as 240, representing the power of 240 (20 years and 240 months of loan). Monthly interest rate = annual interest rate/12. Total interest = monthly repayment amount * loan months-principal.
From the monthly contribution, the bank collects the interest of the remaining principal first, and then the principal; The proportion of interest in monthly payment decreases with the decrease of residual principal, and the proportion of principal in monthly payment increases with the increase, but the total monthly payment remains unchanged. The amount of provident fund loans in cities around the country is high, which should be combined with local conditions.
Second, the average capital calculation formula:
Average capital method: the calculation formula is monthly repayment amount = principal /n+ residual principal * monthly interest rate. Total interest = principal * monthly interest rate * (loan months /2+0.5). Monthly repayment amount = monthly principal+monthly principal and interest; Monthly principal = principal/repayment month; Monthly principal and interest = (principal-total accumulated repayment) x monthly interest rate.
Calculation principle: the amount of principal returned every month is always the same, and the interest will decrease with the decrease of the remaining principal.
The loan interest rate is subject to the relevant interest rate policies of the People's Bank of China and China Banking Regulatory Commission.
2065438+On August 25th, 2009, the People's Bank of China announced that the personal housing loan interest rate is an integral part of the loan interest rate system. In the process of reforming and perfecting the formation mechanism of LPR, the pricing benchmark of individual housing loans also needs to be changed from the loan benchmark interest rate to LPR to give full play to the market role.
At the same time, the personal housing loan interest rate is also an important part of the long-term management mechanism of the real estate market and the regional differentiated housing credit policy. In order to implement the positioning of "the house is for living, not for speculation" and the long-term management mechanism of the real estate market, ensure the smooth and orderly conversion of the pricing benchmark, keep the interest rate of individual housing loans basically stable, and safeguard the legitimate rights and interests of both borrowers and borrowers.
After the conversion of the pricing benchmark, the interest rate of the first set of new individual housing loans in China shall not be lower than the corresponding term LPR (according to the LPR of more than five years on August 20, 4.85%); The interest rate of two sets of personal housing loans shall not be lower than the LPR plus 60 basis points in the same period (calculated by LPR of 5.45% for five years or more on August 20).
The quoted interest rate in the loan market has two terms: 1 year and 5 years or more. Personal housing loan interest rate 1 year and more than 5 years have a direct corresponding benchmark. Individual housing loan interest rate benchmark 1 year and 1 year to 5 years can be independently selected by the lending bank between the two term varieties. After the reference benchmark is determined, the added value can be adjusted to reflect the term spread coefficient.