What is the detailed formula for calculating the 30-year interest of 1 10,000 mortgage?

1. 1 detailed calculation formula of 30-year interest on ten thousand mortgage?

The total interest is 64679 1.67 yuan. If the loan repayment rate in the average capital is 4.3% and the monthly principal repayment is 2777.78, the interest in the first month =1000000× (4.3% ÷12) = 3583.33; The next month's interest = (100000-2777.78) × (4.3% ÷12) = 3573.38, and the 30-year interest is 64679 1.67.

Second, how to calculate the calculation method of mortgage interest

Matching principal and interest repayment method is to add up the total principal and interest of mortgage loans and then distribute them evenly to each month of repayment period. The monthly repayment amount is fixed, but the proportion of principal in the monthly repayment amount increases month by month, and the proportion of interest decreases month by month. At present, there are two ways to calculate mortgage: equal principal and interest calculation and average capital calculation. Calculation method of equal principal and interest: monthly repayment amount = loan principal × [monthly interest rate ×( 1 interest rate) repayment months ]≤[( 1 interest rate) repayment months-1], total interest paid: total interest = repayment months × monthly contribution-loan principal, Monthly interest payable = loan principal × monthly interest rate × [( 1 interest rate )× repayment months -( 1 interest rate) ÷ [( 1 interest rate )× repayment months-1]] Average fund calculation method: monthly payment = (loan principal \) Monthly repayment interest = residual principal × monthly interest rate = (loan principal-cumulative monthly decline = monthly repayment principal × monthly interest rate = loan principal ÷ repayment months × monthly interest rate, total interest = repayment months × (total loan amount × monthly interest rate-monthly interest rate × (total loan amount ÷ repayment months) (repayment months-1)

3. How to calculate the mortgage interest?

You also need the loan term provided by the customer. With this, you can go to China Construction Bank official website to find a "financial calculator" to do the calculation yourself. 32.467 = 2 170 yuan. This data is all estimated data. On the day when the bank issues the loan, the bank will give the customer an accurate data according to the national interest rate standard. Otherwise it is not called loan calculation. Calculation is the form of weather forecast. According to the calculation of the first loan: the benchmark interest rate is lowered from 7.83% 15% to 6.555%, and the interest according to the equal principal and interest method should be 35 102.8 yuan, 26w multiplied by 0.7 minus the down payment, and then multiplied by your annual interest rate (10 and the loan interest rate for 20 years will be different).

Fourth, how to calculate the mortgage interest?

Loan interest is a kind of principal interest that buyers borrow from banks and pay at the interest rate stipulated by banks. The calculation formula of interest is:

Interest = principal × interest rate× deposit period (i.e. time).

The calculation of mortgage interest will be different because of the different loan methods and mortgage repayment methods.

According to the different repayment methods of mortgage, the calculation of mortgage interest can be divided into two calculation methods: equal principal and interest and average principal.

How to calculate the mortgage interest? First of all, we should understand the basic knowledge of interest.

I. Note: General deposits and loans):

Daily interest rate (0/000)= annual interest rate (%)÷360= monthly interest rate (‰)÷30.

Ratio (%) 12

Two, and the transaction interest method to calculate interest.

1. Accumulate the account balance daily according to the actual number of days, and multiply the accumulated product by the daily interest rate to calculate the interest. The interest-bearing formula is:

In which cumulative interest-bearing product = total daily balance.

2. Transaction-by-transaction interest calculation method calculates interest one by one according to the preset interest calculation formula: interest = principal × interest rate × loan term, with three details:

If the interest-bearing period is a whole year (month), the interest-bearing formula is:

(1) monthly interest rate

The calculation formula of the whole interest period is:

② Interest = principal × year (month) × year (month) interest rate principal × odd days × daily interest rate.

At the same time, banks can choose to convert the interest period into actual days to calculate interest, that is, 365 days per year (366 days in leap years), and each month is the actual days in the Gregorian calendar of the current month.

③ Interest = principal × actual days × daily interest rate

These three formulas are essentially the same, but because the interest rate conversion is only 360 days a year, there will be a slight deviation in the actual calculation according to the daily interest rate.

Which formula is used specifically, the central bank gives financial institutions the right to choose independently. Therefore, Parties and financial institutions can

Extended data:

Calculation method

Tool description

1, operation steps:

Step 1: First, choose whether your repayment method is average capital or equal principal and interest, and fill in the commercial loan term, loan amount and actual loan interest rate;

Step 2: Choose whether to display repayment details, and click the "Calculate" button to obtain detailed information such as the month of each period.

point out

1. Working capital loans of commercial enterprises are generally short-term loans, usually for 9 months, with a maximum of 1 year, but there are also a few major components of medium-and long-term loans.

2. Calculate the monthly payment and interest when choosing the average capital and equal principal and interest repayment method for commercial loans.

According to the general mortgage repayment method

I. Calculation formula of equal principal and interest:

Calculation principle: the bank receives the principal after each month; 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.

need

1, with the largest amount of provident fund loans in various cities.

2. For residents who have borrowed money to buy houses, but the per capita area is lower than the local average, the preferential policies for purchasing ordinary self-occupied houses with the first loan shall be implemented mutatis mutandis.

Second, the average capital calculation formula:

Monthly repayment = monthly principal, monthly principal and interest.

Monthly principal = principal/repayment months

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.

Formula description

According to the above formula

Principal: total loan amount

Number of repayment months: loan term X 12. For example, for a loan of 10 years, the repayment period is 10X 12= 120 months.

Monthly interest rate: monthly interest rate = annual interest rate/12.

Annual interest rate: that is, in the hot topic of mortgage discussion, the figure obtained after the base interest rate is 30% off and 8.5% off.

Cumulative repayment amount: the cumulative repayment amount in the first month of average capital repayment law is 0.

For example: 2009 annual interest rate table

Basic annual interest rate: 5.94%

15% annual interest rate: 5.05%

30% annual interest rate: 4. 16%

Annual interest rate of provident fund: 3.87%

explain

Mr. Wang borrowed 400,000 yuan from the bank to buy a house and paid it off in 20 years. The bank gave Mr. Wang a 30% interest rate.

If the annual interest rate is changed to monthly interest rate, the monthly interest rate is 4.16%/12 = 0.00347.

Average capital repayment method:

Monthly principal = 400,000/240 =1666.67

Monthly principal and interest = 400,000× 0.00347 =1388.

Repayment in the first month =1666 438+0388 = 3,054.67 yuan.