How is scheduled principal calculated?
Andrew Campbell
Updated on January 07, 2026
Starting in month one, take the total amount of the loan and multiply it by the interest rate on the loan. Then for a loan with monthly repayments, divide the result by 12 to get your monthly interest. Subtract the interest from the total monthly payment, and the remaining amount is what goes toward principal.
What is principal and interest?
Principal is the money that you originally agreed to pay back. Interest is the cost of borrowing the principal. If you plan to pay more than your monthly payment amount, you can request that the lender or servicer apply the additional amount immediately to the loan principal.
What does it mean to have scheduled principal payment?
Scheduled Principal Payment means the scheduled payment of principal due on the Mortgage Loan on a Monthly Payment Date. Loading…
Is the payment of principal the same every year?
Note that while the payment of principal remains the same, the total payment due each year, including interest, changes. In an even total payment loan, the total payment amount is the same every period. Consider John, who takes a $10,000 loan with a 10% annual interest over 10 annual payments.
How is the amount of principal due in a month calculated?
The amount of principal due in a given month is the total monthly payment (a flat amount) minus the interest payment for that month. The next month, the outstanding loan balance is calculated as the previous month’s outstanding balance minus the most recent principal payment.
How does the even total payment schedule work?
The even total payment schedule is comprised of a decreasing interest payment and an increasing principal payment. The decrease in the size of the interest payment is matched by an increase in the size of the principal payment so that the size of the total loan payment remains constant over the life of the loan (Figure 2).