Amortization Mortgage Calculator

Monthly Payment: $" + monthlyPayment.toFixed(2) + "

"; // Generate amortization schedule generateAmortizationSchedule(principal, monthlyInterestRate, totalPayments, monthlyPayment); } function generateAmortizationSchedule(principal, monthlyInterestRate, totalPayments, monthlyPayment) { var table = ""; var balance = principal; for (var paymentNumber = 1; paymentNumber <= totalPayments; paymentNumber++) { var interest = balance * monthlyInterestRate; var principalPayment = monthlyPayment - interest; balance -= principalPayment; table += ""; } table += "
Payment #PrincipalInterestBalance
" + paymentNumber + "$" + principalPayment.toFixed(2) + "$" + interest.toFixed(2) + "$" + balance.toFixed(2) + "
"; document.getElementById('result').innerHTML += table; }

Introduction: Our Amortization Mortgage Calculator assists you in understanding the monthly payment structure and repayment details of your mortgage. By inputting essential details such as loan principal, annual interest rate, and loan term, you can generate an amortization schedule that provides insights into each monthly payment’s breakdown.

Formula: The calculator uses the amortization formula to determine the monthly payment: Monthly Payment=�⋅�⋅(1+�)�(1+�)�−1Monthly Payment=(1+r)n−1Pr⋅(1+r)n​ where:

  • P is the loan principal,
  • r is the monthly interest rate (annual interest rate divided by 12 and converted to a decimal),
  • n is the total number of payments (loan term in years multiplied by 12).

How to Use:

  1. Enter the Loan Principal (initial loan amount).
  2. Specify the Annual Interest Rate (percentage).
  3. Input the Loan Term in years.
  4. Click the “Calculate” button to obtain the Monthly Payment and an Amortization Schedule.

Example: Suppose you have a loan principal of $200,000, an annual interest rate of 4%, and a loan term of 30 years. Use the Amortization Mortgage Calculator to find out the monthly payment and see the repayment details.


  1. What is mortgage amortization? Mortgage amortization is the process of repaying a loan through scheduled monthly payments, with each payment covering both principal and interest.
  2. Why is an amortization schedule useful? An amortization schedule provides a detailed breakdown of each mortgage payment, illustrating how much goes towards principal, interest, and the remaining balance.
  3. How does the calculator generate an amortization schedule? The calculator uses the amortization formula to calculate each month’s principal and interest, presenting the details in a tabular format.
  4. Can I change the loan term and recalculate? Yes, you can adjust the loan term and click “Calculate” to see how it affects the monthly payment and the entire amortization schedule.
  5. What information does the amortization schedule display? The schedule includes payment number, principal payment, interest payment, and the remaining loan balance for each month.
  6. Is the amortization schedule fixed throughout the loan term? No, the schedule evolves as you make payments, with more going towards principal over time.
  7. Can I use the calculator for other types of loans? While designed for mortgages, the calculator can be used for other amortizing loans with principal and interest payments.
  8. How does the monthly payment change with different interest rates? Higher interest rates result in larger monthly payments, and lower rates lead to smaller payments.
  9. Is it possible to pay off the loan early with extra payments? Yes, making additional payments towards the principal can help pay off the loan faster and reduce interest costs.
  10. Does the calculator consider property taxes and insurance? No, the calculator focuses on principal and interest. Additional costs like property taxes and insurance are not included.

Conclusion: Our Amortization Mortgage Calculator provides a comprehensive view of your mortgage, empowering you with valuable insights into monthly payments and the evolving loan balance. Utilize this tool to make informed decisions and gain clarity on your mortgage repayment journey.

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