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How to calculate mortgage loan if interest rate rises

2026-01-21 00:38:33 Real Estate

How to calculate mortgage loan if interest rate rises

Recently, central banks in many countries and regions around the world have announced interest rate hikes to deal with inflation and economic pressure. This policy change directly affects the adjustment of mortgage interest rates. Many home buyers and lenders have begun to pay attention to the calculation method of mortgage loans after interest increases. This article will give you a detailed analysis of the calculation method of mortgage loans after interest increases, and provide structured data to help you better understand.

1. The impact of rising interest rates on housing loans

How to calculate mortgage loan if interest rate rises

Rising mortgage interest rates mean that borrowers need to pay higher interest every month, and the total repayment will also increase accordingly. Here is an example of mortgage repayments before and after interest increases:

loan amountoriginal interest ratenew interest raterepayment periodIncrease in monthly paymentTotal interest increases
1 million yuan4.5%5.0%30 yearsAbout 300 yuanAbout 100,000 yuan
2 million yuan4.5%5.0%30 yearsAbout 600 yuanAbout 200,000 yuan

2. Key factors in mortgage calculation

The calculation of a mortgage loan mainly involves the following key factors:

1.Loan principal: That is the amount you need to borrow.

2.loan interest rate: The annual interest rate provided by a bank or financial institution, usually divided into fixed interest rate and floating interest rate.

3.repayment period: The loan repayment time, usually in years.

4.Repayment method: Common repayment methods include equal principal and interest and equal principal.

3. The difference between equal principal and interest and equal principal

Here is a comparison of the two repayment options:

Repayment methodFeaturesSuitable for the crowd
Equal principal and interestThe monthly repayment amount is fixed, and the interest proportion gradually decreasesOffice workers with stable income
Equal amount of principalThe monthly principal repayment is fixed, the interest gradually decreases, and the monthly payment decreasesPeople with strong early repayment ability

4. Calculation method of mortgage loan after interest rate increases

Taking equal amounts of principal and interest as an example, the calculation formula for the monthly mortgage payment is:

Monthly payment = [Loan principal × monthly interest rate × (1 + monthly interest rate)^number of repayment months] / [(1 + monthly interest rate)^number of repayment months - 1]

Assuming that the loan principal is 1 million yuan, the original interest rate is 4.5%, the new interest rate is 5.0%, and the repayment period is 30 years (360 months), the monthly payment changes as follows:

interest ratemonthly paymenttotal interest
4.5%About 5,066 yuanAbout 824,000 yuan
5.0%About 5,368 yuanAbout 932,000 yuan

5. How to deal with rising interest rates

1.Early repayment: If you have idle funds, you may consider repaying your loan early to reduce interest expenses.

2.Choose a fixed rate: In a rising interest rate cycle, choosing a fixed-rate loan can lock in a lower interest rate.

3.Adjust repayment method: Choose a more suitable repayment method based on your own financial situation.

4.Pay attention to policy changes: Keep abreast of the interest rate adjustment policies of the central bank and banks and make financial plans.

6. Conclusion

The impact of rising interest rates on housing loans cannot be ignored. Home buyers and lenders should fully understand the impact of interest rate changes on repayment and take corresponding countermeasures. Through reasonable financial planning and repayment strategies, the economic pressure caused by rising interest rates can be effectively reduced.

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