Loan Amortization Formula:
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Loan amortization is the process of paying off a loan through regular payments over time. Each payment covers both interest and principal, with the proportion changing over the loan term.
The calculator uses the standard amortization formula:
Where:
Explanation: This formula calculates the fixed monthly payment required to fully amortize a loan over its term, accounting for both principal and interest.
Details: Knowing your exact monthly payment helps with budgeting, loan comparison, and financial planning. It ensures you can afford the loan before committing.
Tips: Enter the principal amount in dollars, annual interest rate as a percentage, and loan term in years. All values must be positive numbers.
Q1: What is included in the monthly payment?
A: The calculated payment includes principal and interest only. Additional costs like property taxes, insurance, or PMI are not included.
Q2: How does interest rate affect the payment?
A: Higher interest rates significantly increase monthly payments. A 1% rate increase can raise payments by 5-10% depending on the loan term.
Q3: What is the difference between 15-year and 30-year loans?
A: 15-year loans have higher monthly payments but much less total interest paid. 30-year loans have lower payments but more total interest over the life of the loan.
Q4: Can I calculate payments for different loan types?
A: This formula works for fixed-rate mortgages, auto loans, personal loans, and other amortizing loans with fixed payments.
Q5: How accurate is this calculator?
A: This provides the standard mathematical calculation. Actual lender payments may vary slightly due to rounding methods or additional fees.