1. Equal principal and interest repayment method: Equal principal and interest repayment method is to repay the loan principal and interest with equal principal and interest every month.

The calculation formula is as follows: monthly repayment amount = (loan principal × monthly interest rate× (1interest rate) total repayment period) /( 1 interest rate) total repayment period-1.

2. Average capital repayment method: The average capital repayment method is a kind of diminishing repayment method. Using this method, the loan principal is divided into repayment periods, and the interest payable in each period is calculated from the unpaid principal. The principal amount of each period is unchanged, and the interest is decreasing step by step.

The calculation formula is as follows: monthly (quarterly) repayment amount = loan principal/repayment times (loan principal-accumulated repaid principal) × monthly (quarterly) interest rate.

Precautions for commercial loans:

First, before applying for personal business loans, it is necessary to evaluate the current and future economic strength of the family and determine the down payment and loan ratio.

Second, the borrower must have a good personal credit record.

Third, we should correctly evaluate the value of mortgaged houses. If the house is too old to meet the requirements of the bank. Under normal circumstances, 10 years is appropriate, and some banks require less than 5 years.

Four, the borrower must be consistent with the property holder, that is to say, can't use my name for mortgage loans.

5. The borrower needs to provide proof of salary and bank running water to improve the borrower's credit record and speed up the examination and approval time.

Commercial loans are loans used to supplement the working capital of industrial and commercial enterprises. Generally, they are short-term loans, usually 9 months, and no more than one year at most, but there are also a few medium-and long-term loans. This kind of loan is the main part of commercial bank loans, generally accounting for more than one-third of the total loans. Commercial loans, also known as individual housing loans, are commercial banks and housing savings banks approved by the People's Bank of China, which provide loans for urban residents to purchase ordinary housing for their own use and implement the statutory loan interest rate. Many commercial banks in Beijing have this business, such as CCB and ABC. The procedures for applying for loans are basically the same.

How to calculate the formula of commercial loan?

Loan interest = loan amount, loan interest rate, loan term = loan amount, days and days, daily interest rate = loan amount, monthly interest rate = loan amount, annual interest rate.

Loan days = actual Gregorian calendar days (such as 20 12 1 to 20 1 2 May 24th, which should be1actual February days, actual March days, actual April days and actual May 24th days).

Daily interest rate = annual interest rate /360

Monthly interest rate = annual interest rate/12

Note: The benchmark loan interest rates announced by the central bank are all annual interest rates.

Extended data

There are two calculation methods:

(1) Regular interest calculation

For loans with regular interest, the 20th day of the last month of each quarter is the interest settlement date, and the interest period is the 20th day of last quarter.

Calculation formula = interest-bearing products × (annual loan interest rate ÷360)

(2) Interest settlement one by one

Interest settlement by transaction means that the interest will be settled together with the principal.

Loan interest = loan amount × loan days × (annual loan interest rate ÷360)