FINANCIAL CALCULATORS
Mortgage Interest Calculator
Calculate your total mortgage interest paid over the life of your home loan.
What is the Mortgage Interest Calculator & How does it work?
A mortgage is a long-term loan used to purchase real estate. The total cost of a mortgage includes not only the principal amount borrowed but also the interest that accumulates over time. Understanding how much interest you’ll pay can help you make informed decisions about your home financing.
The formula to calculate the monthly mortgage payment is:The total interest paid is then the sum of all monthly payments minus the principal amount.
The formula to calculate the monthly mortgage payment is:
M = P times frac{r(1+r)^n}{(1+r)^n-1}
M = Monthly Payment
P = Principal Loan Amount
r = Monthly Interest Rate (annual rate divided by 12)
n = Number of Payments (loan term in years multiplied by 12)
P = Principal Loan Amount
r = Monthly Interest Rate (annual rate divided by 12)
n = Number of Payments (loan term in years multiplied by 12)
Parameters
Total Interest Paid—
Frequently Asked Questions
How do I calculate my monthly mortgage payment?
Use the formula M = P * (r(1+r)^n) / ((1+r)^n - 1), where M is your monthly payment, P is the principal loan amount, r is the monthly interest rate, and n is the number of payments.
What does the 'r' in the mortgage formula represent?
'r' stands for the monthly interest rate, which is calculated by dividing the annual interest rate by 12.
How do I determine the number of payments (n) in the mortgage formula?
Multiply the loan term in years by 12 to get the total number of monthly payments.
Can you explain how interest affects my mortgage payment?
Interest increases your total monthly payment because it adds a cost for borrowing money, which accumulates over time.
What is the difference between principal and interest in a mortgage?
Principal is the original amount borrowed to purchase the property, while interest is the additional cost paid for using the lender's money.
How can I lower my monthly mortgage payment?
You can lower your payment by increasing the loan term, reducing the principal amount, or negotiating a lower interest rate.
Is there an easy way to estimate my total interest paid over the life of the mortgage?
Multiply your monthly payment by the number of payments (n) and subtract the principal amount to get the total interest paid.
Results are for informational purposes only and do not constitute professional advice.