First, the down payment calculation formula
Down payment refers to a part of the money paid by buyers for buying a house, usually a certain proportion of the total house price. Under normal circumstances, the down payment ratio is 20%~30% of the total house price.
Assume that the total house price is X yuan, the down payment ratio is Y%(Y is a decimal), and the down payment amount is:
Down payment = X Y
For example, if the total house price is 654.38+0 million, the down payment ratio is 20%, and the down payment amount is:
Down payment = 1 10,000 20% = 200,000.
Second, the calculation formula of monthly supply
Monthly payment refers to the monthly repayment amount that mortgage buyers need to pay. The monthly loan amount is determined by the loan principal, loan term and loan interest rate.
1, average capital repayment method
The average capital repayment method is based on the principle of equal monthly repayment, in which the proportion of principal decreases month by month and the proportion of interest increases month by month. The calculation formula is:
Monthly repayment principal = repayment months of loan principal
Monthly repayment interest = the monthly interest rate of the remaining loan principal in the previous period.
Assuming that the loan principal is X yuan, the loan term is Y years, and the annual interest rate is Z%(Z is a decimal), the monthly repayment amount is:
Monthly payment amount = [X (Y 12)]+[X Z 12]
For example, if the loan principal is 6,543,800+0,000, the loan term is 20 years, and the annual interest rate is 5%, then the monthly payment amount is:
Monthly payment = [1 ten thousand (20 12)]+[ 1 ten thousand 5% 12]5377 yuan.
2. Equal principal and interest repayment method
Matching principal and interest repayment method is a repayment method that makes the proportion of principal and interest in monthly repayment always equal according to the principle of equal monthly repayment amount. The calculation formula is:
Monthly repayment amount = [Monthly interest rate of loan principal (1+ monthly interest rate) repayment months ][( 1+ monthly interest rate) repayment months-1]
Where the monthly interest rate = annual interest rate 12.
Assuming that the loan principal is X yuan, the loan term is Y years, and the annual interest rate is Z%(Z is a decimal), the monthly repayment amount is:
Monthly payment amount = [x z12 (1+z12)] [(1+z12) (y12)-65438+.
For example, if the loan principal is 6,543,800+0,000, the loan term is 20 years and the annual interest rate is 5%, then the monthly payment amount is:
Monthly payment = [1 10,005%12 (1+5%12) (2012)] [(1+5%12]
Third, matters needing attention
The calculation formulas of 1, down payment and monthly payment can only be used as reference, and the specific values need to be calculated according to the actual situation.
2. In the process of buying a house, you need to consider other expenses, such as taxes and fees.
3. In terms of loan interest rate, the interest rates of different banks may be different and need to be compared and selected.
4. When choosing the repayment method, you need to choose according to your own financial situation and needs in order to better manage your own finances.
Buying a house is a big event, and many factors need to be considered. When calculating the down payment and monthly payment, you need to calculate according to the actual situation in order to better plan your finances.