Calculate Loan Payments, Graphs and Amortization Schedules


Loan Balance Calculator


Original principal amount borrowed:
Annual interest rate:
Original loan term (# of months):
Original monthly payment amount:
Month and year of first payment:
Number of months gone by:

Here, we provide a variable payment loan balance calculator. This calculator allows you to see an estimate of the balance of a loan where payments have not always been a constant agreed amount.

Initially, enter the details of the original loan agreement. These details include:

Original principal amount borrowed: The original principle of the loan.
Annual interest rate
Original loan term (# of months): The number of months of the term of the original loan.
Original monthly payment amount: The initially agreed monthly payment amount
Month and year of first payment
Number of months gone by: This is how many months have currently gone by since the start of the loan agreement.

Then click the “Create Loan Balance Calculator” button.

This will then produce another calculator that allows you to input variable loan payments for each month of the loan and compute the balance according to the input interest rate and the variable payments.

For each month, the new calculator will allow you to put in a payment amount. You can then also put in a number of months in the “Fill Down Number” column and click the fill down button. This will allow you to fill in that months payment amount in the next months values, thus making the process of filling in the months payments amounts quicker when there are several months in a row that have had the same payment.

The calculator will then show the balance of the loan given the initial loan amount, the interest rate and the variable payments made each month.

Some of the other calculators presented on the site include a loan comparison calculator that allows you to compare the monthly payments and total interest in a side-by-side manner on up to four loans.

Additionally, our loan amortization calculator allows you to see a range of details relating to the payments and amortization of a single loan. This calculator will calculate the required payment of a loan as well as producing a number of graphs of various loan metrics through time and an amortization schedule that breaks each payment into the interest component and the principle component, as well as calculating the total interest accumulated over the term of the loan.